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14 Permanent API jobs in South Croydon + 10 miles
513 exact matches jobs are outside your preferred location
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Were looking for a proactive and technically capable Business Applications Specialist to help support and evolve the cloud platforms that power our business. Join Roc as we continue our journey to modernise and enhance our internal systems, enabling better experiences for our colleagues and customers alike. In this role, youll play a key part in developing, integrating, and maintaining a wide range of business-critical applications from CRM and ERP to automation and analytics platforms. At Roc, we combine technical expertise with a genuine commitment to continuous improvement. Our lean and agile internal IT team partners closely with departments across the business to streamline operations, improve user experiences, and deliver value through technology. Youll work in a supportive environment where your ideas matter, your growth is encouraged, and the systems you help
Were looking for a proactive and technically capable Business Applications Specialist to help support and evolve the cloud platforms that power our business. Join Roc as we continue our journey to modernise and enhance our internal systems, enabling better experiences for our colleagues and customers alike. In this role, youll play a key part in developing, integrating, and maintaining a wide range of business-critical applications from CRM and ERP to automation and analytics platforms. At Roc, we combine technical expertise with a genuine commitment to continuous improvement. Our lean and agile internal IT team partners closely with departments across the business to streamline operations, improve user experiences, and deliver value through technology. Youll work in a supportive environment where your ideas matter, your growth is encouraged, and the systems you help
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Senior .Net Developer
Senior .Net Developer
Halian Technology Limited
W1, Central London
From £70,000 to £75,000 per annum Plus benefits
We are seeking a highly skilled Senior .NET Developer to join my clients growing technology team. This role requires strong expertise in .NET development, deep knowledge of SQL and database management, and a solid understanding of software architecture and solution design. Experience in the payments and e-card industry is highly desirable. You will get the opportunity to work with global and worldwide brands such as Google, Sony and Visa to name of the many organisations. Key Responsibilities * Design, develop, and maintain scalable and robust .NET applications. Lead the implementation of technical solutions aligned with business goals. * Optimize and manage complex SQL databases and ensure data integrity and performance. * Collaborate with cross-functional teams including Product, QA, and DevOps.
We are seeking a highly skilled Senior .NET Developer to join my clients growing technology team. This role requires strong expertise in .NET development, deep knowledge of SQL and database management, and a solid understanding of software architecture and solution design. Experience in the payments and e-card industry is highly desirable. You will get the opportunity to work with global and worldwide brands such as Google, Sony and Visa to name of the many organisations. Key Responsibilities * Design, develop, and maintain scalable and robust .NET applications. Lead the implementation of technical solutions aligned with business goals. * Optimize and manage complex SQL databases and ensure data integrity and performance. * Collaborate with cross-functional teams including Product, QA, and DevOps.
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If you have skills in API and Web product development, we need YOU to enhance our capabilities, become embedded within Responsiv, and deliver on technical projects. You should be self-motivated, proactive, and eager to learn, with strong API and web development skills.
If you have skills in API and Web product development, we need YOU to enhance our capabilities, become embedded within Responsiv, and deliver on technical projects. You should be self-motivated, proactive, and eager to learn, with strong API and web development skills.
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About Altitude Angel - The end of 2024 marked a decade of Altitude Angel a journey driven by innovation, collaboration and a shared vision of shaping future skies with the safe and unsegregated integration of uncrewed aviation. Since the beginnings in 2014, weve transformed the landscape of drone and airspace management, delivering future proof solutions to connect skies and communities safely and efficiently. By laying the foundations for the safe integration of Uncrewed Aerial Systems (UAS) into shared airspace, were paving the way for the future of Advanced Air Mobility (AAM) and fully integrated airspace. About the Role - Working with our talented technical and commercial teams, you will lead the ideation, design, delivery and iteration of our GuardianUTM platform, fulfilling our vision of Automated Flight Everywhere, For Everyone and enabling the safe integration
About Altitude Angel - The end of 2024 marked a decade of Altitude Angel a journey driven by innovation, collaboration and a shared vision of shaping future skies with the safe and unsegregated integration of uncrewed aviation. Since the beginnings in 2014, weve transformed the landscape of drone and airspace management, delivering future proof solutions to connect skies and communities safely and efficiently. By laying the foundations for the safe integration of Uncrewed Aerial Systems (UAS) into shared airspace, were paving the way for the future of Advanced Air Mobility (AAM) and fully integrated airspace. About the Role - Working with our talented technical and commercial teams, you will lead the ideation, design, delivery and iteration of our GuardianUTM platform, fulfilling our vision of Automated Flight Everywhere, For Everyone and enabling the safe integration
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Solid understanding of microservices and API's
Solid understanding of microservices and API's
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API and Integration proficiency
API and Integration proficiency
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You will bring with you prior experience of developing Web API based applications written in .NET Framework or .NET Core, working in medium sized development teams utilizing features such as Azure web apps, SQL PaaS databases, blob storage, service bus, and other Azure services.
You will bring with you prior experience of developing Web API based applications written in .NET Framework or .NET Core, working in medium sized development teams utilizing features such as Azure web apps, SQL PaaS databases, blob storage, service bus, and other Azure services.
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Job Title: Back-End Developer - Location: Reading (Hybrid) Salary: Up to £60,000 DOE - Are you passionate about building powerful backend systems that drive real-world impact? Benefits! Hybrid Flexibility - Balance office time and remote work your way? Modern Tech Stack - Node.js, Python, .NET, cloud-native tools & more? Career Development - Ongoing training, mentorship, and progression? Innovative Projects - Get hands-on with meaningful, high-impact work * Build Robust Backends - Design and develop high-performance APIs and services * Data Management - Work with SQL and NoSQL databases (PostgreSQL, MongoDB, etc.) * Cloud Deployment - Deploy scalable apps via AWS, Azure, or GCP * Implement DevOps Practices - CI/CD pipelines, Docker, Kubernetes * Collaborate Across Teams - Work with product & frontend devs to deliver end-to-end solutions
Job Title: Back-End Developer - Location: Reading (Hybrid) Salary: Up to £60,000 DOE - Are you passionate about building powerful backend systems that drive real-world impact? Benefits! Hybrid Flexibility - Balance office time and remote work your way? Modern Tech Stack - Node.js, Python, .NET, cloud-native tools & more? Career Development - Ongoing training, mentorship, and progression? Innovative Projects - Get hands-on with meaningful, high-impact work * Build Robust Backends - Design and develop high-performance APIs and services * Data Management - Work with SQL and NoSQL databases (PostgreSQL, MongoDB, etc.) * Cloud Deployment - Deploy scalable apps via AWS, Azure, or GCP * Implement DevOps Practices - CI/CD pipelines, Docker, Kubernetes * Collaborate Across Teams - Work with product & frontend devs to deliver end-to-end solutions
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Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. * Strong background in JavaScript frameworks, microservices, and API development.
Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. * Strong background in JavaScript frameworks, microservices, and API development.
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Preferably Cloud based solutions withWeb, API n Mobile testing.
Preferably Cloud based solutions withWeb, API n Mobile testing.
* 6+ years of hands-on development experience with 5G SBA network functions (e.g., AMF, SMF, NRF, PCF, UDM) * Strong programming skills in languages such as Go, Java, or C++ * Proficient in building microservices and working with REST/gRPC APIs * Experience in Docker and Kubernetes in deploying services over public or private clouds * Solid understanding of 3GPP specs (especially TS 23.501, 23.502, 29.500+ series
* 6+ years of hands-on development experience with 5G SBA network functions (e.g., AMF, SMF, NRF, PCF, UDM) * Strong programming skills in languages such as Go, Java, or C++ * Proficient in building microservices and working with REST/gRPC APIs * Experience in Docker and Kubernetes in deploying services over public or private clouds * Solid understanding of 3GPP specs (especially TS 23.501, 23.502, 29.500+ series
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Next.JS Software Engineer - Remote
Next.JS Software Engineer - Remote
Exposed Solutions
W1B, West London
From £60,000 to £80,000 per annum
Experience with API design and development, including RESTful services.
Experience with API design and development, including RESTful services.
Senior Product Owner - FX
Senior Product Owner - FX
Halian Technology Limited
W1, Central London
From £80,000 to £95,000 per annum
My client is seeking a Senior Product Owner with deep FX experience to own and drive the development of our FX and treasury-related products. You will work across cross-functional teams to shape our product strategy, with a focus on FX-as-a-Service, liquidity integration, deposit innovation (including zero-deposit solutions), forwards, and hedging products. This role demands a blend of strategic thinking, market understanding, and hands-on delivery skills. You'll be working closely with engineering, sales, operations, and external partners to deliver high-impact solutions that meet customer needs and strengthen our market position. Key Responsibilities * Own the end-to-end product lifecycle for FX and treasury products, from ideation to delivery and ongoing optimization. o FX-as-a-Service capabilities - o Integrated liquidity partnerships (e.g., with Tier 1 providers,
My client is seeking a Senior Product Owner with deep FX experience to own and drive the development of our FX and treasury-related products. You will work across cross-functional teams to shape our product strategy, with a focus on FX-as-a-Service, liquidity integration, deposit innovation (including zero-deposit solutions), forwards, and hedging products. This role demands a blend of strategic thinking, market understanding, and hands-on delivery skills. You'll be working closely with engineering, sales, operations, and external partners to deliver high-impact solutions that meet customer needs and strengthen our market position. Key Responsibilities * Own the end-to-end product lifecycle for FX and treasury products, from ideation to delivery and ongoing optimization. o FX-as-a-Service capabilities - o Integrated liquidity partnerships (e.g., with Tier 1 providers,
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* 6+ years of hands-on development experience with 5G SBA network functions (e.g., AMF, SMF, NRF, PCF, UDM) * Strong programming skills in languages such as Go, Java, or C++ * Proficient in building microservices and working with REST/gRPC APIs * Experience in Docker and Kubernetes in deploying services over public or private clouds * Solid understanding of 3GPP specs (especially TS 23.501, 23.502, 29.500+ series
* 6+ years of hands-on development experience with 5G SBA network functions (e.g., AMF, SMF, NRF, PCF, UDM) * Strong programming skills in languages such as Go, Java, or C++ * Proficient in building microservices and working with REST/gRPC APIs * Experience in Docker and Kubernetes in deploying services over public or private clouds * Solid understanding of 3GPP specs (especially TS 23.501, 23.502, 29.500+ series
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Senior Full Stack Web Developer
Senior Full Stack Web Developer
Profile 29
IG10, Loughton
From £90,000 to £120,000 per annum + benefits (see advert)
As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
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Staff Quality Engineer (Mobile Apps)
Staff Quality Engineer (Mobile Apps)
John Lewis Head Office
RG12, Bracknell
From £70,000 to £100,000 per annum
As the UKs most successful omni-channel retailer which includes two of the UKs most loved department store and grocery brands, with annual sales revenues in excess of £12B. The Partnership also includes a rapidly growing Financial Services business, with growth of 22% in 2022/23 - Our Engineering practice includes 60+ teams, working on everything from Cloud Platforms to Mobile Apps, from eCommerce functionality to Machine Learning. Our Engineers work collaboratively and share knowledge, and learning is extremely important to us. We support our Engineers to continuously improve their skills and keep abreast of the latest technologies. This advertised role, Senior Quality Engineer (Mobile), is known internally as Product Engineer (PL6). (Find out more about being a Product Engineer in the Partnership, and the technology we use.
As the UKs most successful omni-channel retailer which includes two of the UKs most loved department store and grocery brands, with annual sales revenues in excess of £12B. The Partnership also includes a rapidly growing Financial Services business, with growth of 22% in 2022/23 - Our Engineering practice includes 60+ teams, working on everything from Cloud Platforms to Mobile Apps, from eCommerce functionality to Machine Learning. Our Engineers work collaboratively and share knowledge, and learning is extremely important to us. We support our Engineers to continuously improve their skills and keep abreast of the latest technologies. This advertised role, Senior Quality Engineer (Mobile), is known internally as Product Engineer (PL6). (Find out more about being a Product Engineer in the Partnership, and the technology we use.
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Security DevOps Engineer - Tunbridge Wells
Security DevOps Engineer - Tunbridge Wells
GMA Consulting
TN1, Tunbridge Wells
£80,000-£85,000K base + Bonus + benefits
· Exposure to Cloud Native software development, including cloud infrastructure and API design (Azure preferred)
· Exposure to Cloud Native software development, including cloud infrastructure and API design (Azure preferred)
Software Engineer - React
Software Engineer - React
Halian Technology Limited
W1, Central London
From £60,000 to £70,000 per annum
My client is an innovative fintech company at the forefront of transforming financial services through cutting-edge technology. We aim to build seamless, secure, and scalable solutions that simplify the world of finance for our clients. They are collaborative and agile team thrives in a fast-paced environment, and they're looking for a talented Frontend Engineer to join their growing development team. As a Frontend Engineer, you will play a key role in developing user-friendly, high-performance, and responsive web applications. You will work closely with product managers, backend engineers, and designers to create modern, feature-rich applications that integrate seamlessly with cloud-based services. You will leverage your expertise in React, TypeScript, and AWS to build scalable and maintainable solutions that power financial applications.
My client is an innovative fintech company at the forefront of transforming financial services through cutting-edge technology. We aim to build seamless, secure, and scalable solutions that simplify the world of finance for our clients. They are collaborative and agile team thrives in a fast-paced environment, and they're looking for a talented Frontend Engineer to join their growing development team. As a Frontend Engineer, you will play a key role in developing user-friendly, high-performance, and responsive web applications. You will work closely with product managers, backend engineers, and designers to create modern, feature-rich applications that integrate seamlessly with cloud-based services. You will leverage your expertise in React, TypeScript, and AWS to build scalable and maintainable solutions that power financial applications.
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This well-established and pioneering data platform company is seeking a talented Python Developer to join their innovative and growing team. This is a fantastic opportunity to contribute to a cutting-edge platform in a predominantly remote role, offering an excellent work-life balance. There will be a need to visit the office around twice a month - Our client is at the forefront of data solutions, and they are looking for a Python Developer with robust experience, particularly with FastAPI, to help build and enhance their sophisticated systems. If you are passionate about clean code, scalable architecture, and working with modern technologies, this role is for you. * Designing, developing, and maintaining high-quality, scalable, and efficient Python code. * Building and integrating robust APIs, with a strong focus on FastAPI.
This well-established and pioneering data platform company is seeking a talented Python Developer to join their innovative and growing team. This is a fantastic opportunity to contribute to a cutting-edge platform in a predominantly remote role, offering an excellent work-life balance. There will be a need to visit the office around twice a month - Our client is at the forefront of data solutions, and they are looking for a Python Developer with robust experience, particularly with FastAPI, to help build and enhance their sophisticated systems. If you are passionate about clean code, scalable architecture, and working with modern technologies, this role is for you. * Designing, developing, and maintaining high-quality, scalable, and efficient Python code. * Building and integrating robust APIs, with a strong focus on FastAPI.
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Develop Azure-based integration solutions using Logic Apps, Service Bus, Function Apps, API * Logic Apps, Service Bus, API Management
Develop Azure-based integration solutions using Logic Apps, Service Bus, Function Apps, API * Logic Apps, Service Bus, API Management
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Location: Stewartby, Bedfordshire (Office-based) Salary: £50,000-£70,000 + Benefits - Job Type: Full-time, Permanent - Sector: EV Charging | Cloud | Full Stack | IoT - Power the Future of EV Charging – Join a High-Performance Tech Team - We’re working with a UK-based innovator in the electric vehicle charging space to recruit a Full Stack Developer to play a central role in delivering the smart, connected infrastructure that underpins their growing product range. This is a hands-on, office-based role where you’ll work alongside hardware and firmware teams to build real-world IoT-enabled systems from the ground up. The company is known for its premium charge point design, smart user features, and direct partnerships with major automotive brands. The Role - You’ll lead the architecture, development, and maintenance of the cloud back-end systems, as well as supporting pr
Location: Stewartby, Bedfordshire (Office-based) Salary: £50,000-£70,000 + Benefits - Job Type: Full-time, Permanent - Sector: EV Charging | Cloud | Full Stack | IoT - Power the Future of EV Charging – Join a High-Performance Tech Team - We’re working with a UK-based innovator in the electric vehicle charging space to recruit a Full Stack Developer to play a central role in delivering the smart, connected infrastructure that underpins their growing product range. This is a hands-on, office-based role where you’ll work alongside hardware and firmware teams to build real-world IoT-enabled systems from the ground up. The company is known for its premium charge point design, smart user features, and direct partnerships with major automotive brands. The Role - You’ll lead the architecture, development, and maintenance of the cloud back-end systems, as well as supporting pr
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Location: London (Hybrid) Salary: £107,000 + Up to 25% Bonus + Up to 12% Pension + £4,000 Travel Allowance - Department: Information Technology - Architecture - Shape the Future of Digital Commerce and Customer Experience - We're seeking an experienced Salesforce Architect to lead the technical strategy, design, and delivery of enterprise-scale solutions across Salesforce platforms. This is a key leadership role for someone passionate about customer-centric technology, scalable architecture, and driving digital transformation in a complex and fast-paced environment. You'll play a critical role in evolving our e-commerce and customer engagement platforms using Salesforce Commerce Cloud, Service Cloud, Experience Cloud, and Order Management. What You'll Be Doing - Architect and implement scalable, high-performance Salesforce solutions tailored to business needs.
Location: London (Hybrid) Salary: £107,000 + Up to 25% Bonus + Up to 12% Pension + £4,000 Travel Allowance - Department: Information Technology - Architecture - Shape the Future of Digital Commerce and Customer Experience - We're seeking an experienced Salesforce Architect to lead the technical strategy, design, and delivery of enterprise-scale solutions across Salesforce platforms. This is a key leadership role for someone passionate about customer-centric technology, scalable architecture, and driving digital transformation in a complex and fast-paced environment. You'll play a critical role in evolving our e-commerce and customer engagement platforms using Salesforce Commerce Cloud, Service Cloud, Experience Cloud, and Order Management. What You'll Be Doing - Architect and implement scalable, high-performance Salesforce solutions tailored to business needs.
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Python Developer - Hybrid Remote
Python Developer - Hybrid Remote
Vertech Group (UK) Ltd
NW3, North West London
From £90,000 to £97,000 per annum + Benefits
Senior Python Developer - Location:3 days per week remote / 2 days in NW London - Salary:Circa 90K 97K + Benefits - Work Permit:Sponsorship provided (fluent English required) Senior Python Developerrequired by a fast-growing, tech-led business! This is a varied, challenging role within a talented team, where youll focus on building scalable, reliable backend systems while also sharing knowledge and guiding less experienced developers where needed * Solid background in backend development using Python (Flask, FastAPI, or similar) * Demonstrated experience building RESTful APIs * Skilled in Docker and/or Kubernetes * Experience in automating builds (CI/CD) * Exposure to Google Cloud Platform (GCP) * Strong grasp of clean code practices and scalable architecture * Experience of Agile methodologies * Excellent communication and collaboration skills
Senior Python Developer - Location:3 days per week remote / 2 days in NW London - Salary:Circa 90K 97K + Benefits - Work Permit:Sponsorship provided (fluent English required) Senior Python Developerrequired by a fast-growing, tech-led business! This is a varied, challenging role within a talented team, where youll focus on building scalable, reliable backend systems while also sharing knowledge and guiding less experienced developers where needed * Solid background in backend development using Python (Flask, FastAPI, or similar) * Demonstrated experience building RESTful APIs * Skilled in Docker and/or Kubernetes * Experience in automating builds (CI/CD) * Exposure to Google Cloud Platform (GCP) * Strong grasp of clean code practices and scalable architecture * Experience of Agile methodologies * Excellent communication and collaboration skills
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Python Developer - Hybrid Remote
Python Developer - Hybrid Remote
VERTECH GROUP (UK) LTD
NW3, North West London
From £90,000 to £97,000 per annum + Benefits
Senior Python Developer - Location:3 days per week remote / 2 days in NW London - Salary:Circa 90K 97K + Benefits - Work Permit:Sponsorship provided (fluent English required) Senior Python Developerrequired by a fast-growing, tech-led business! This is a varied, challenging role within a talented team, where youll focus on building scalable, reliable backend systems while also sharing knowledge and guiding less experienced developers where needed * Solid background in backend development using Python (Flask, FastAPI, or similar) * Demonstrated experience building RESTful APIs * Skilled in Docker and/or Kubernetes * Experience in automating builds (CI/CD) * Exposure to Google Cloud Platform (GCP) * Strong grasp of clean code practices and scalable architecture * Experience of Agile methodologies * Excellent communication and collaboration skills
Senior Python Developer - Location:3 days per week remote / 2 days in NW London - Salary:Circa 90K 97K + Benefits - Work Permit:Sponsorship provided (fluent English required) Senior Python Developerrequired by a fast-growing, tech-led business! This is a varied, challenging role within a talented team, where youll focus on building scalable, reliable backend systems while also sharing knowledge and guiding less experienced developers where needed * Solid background in backend development using Python (Flask, FastAPI, or similar) * Demonstrated experience building RESTful APIs * Skilled in Docker and/or Kubernetes * Experience in automating builds (CI/CD) * Exposure to Google Cloud Platform (GCP) * Strong grasp of clean code practices and scalable architecture * Experience of Agile methodologies * Excellent communication and collaboration skills
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Associate Director Enterprise Architecture
Associate Director Enterprise Architecture
La Fosse
Mayfair, W1
£125k - 135k per year + Bonus, Company car or cash equivalent & Share
Job Title: Associate Director, Enterprise Architecture - Overview of the Role - The Associate Director of Enterprise Architecture is responsible for empowering both business and technology leadership to make informed decisions that strike a balance between immediate operational demands, emerging opportunities, and long-term strategic goals. This is achieved by leading and shaping the enterprise architecture function, establishing and promoting architectural principles and standards, maintaining a clear target digital architecture and roadmap, and offering strategic guidance. Key Responsibilities * Develop and continuously evolve the organisation's enterprise architecture framework, principles, standards, and roadmaps to ensure alignment with overall business strategy. * Drive the creation and maintenance of a comprehensive technology strategy and roadmap that integrat
Job Title: Associate Director, Enterprise Architecture - Overview of the Role - The Associate Director of Enterprise Architecture is responsible for empowering both business and technology leadership to make informed decisions that strike a balance between immediate operational demands, emerging opportunities, and long-term strategic goals. This is achieved by leading and shaping the enterprise architecture function, establishing and promoting architectural principles and standards, maintaining a clear target digital architecture and roadmap, and offering strategic guidance. Key Responsibilities * Develop and continuously evolve the organisation's enterprise architecture framework, principles, standards, and roadmaps to ensure alignment with overall business strategy. * Drive the creation and maintenance of a comprehensive technology strategy and roadmap that integrat
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