API Development Jobs in London

1 to 25 of 51 API Development Jobs in London

Data Engineer

London Area, United Kingdom
Hybrid / WFH Options
Janus Henderson Investors
well as provide suggestions for new standards and procedures as the move toward cloud technologies matures. Participate in all phases of the agile systems development life cycle, including requirements analysis, design (including code design and code reviews), development, testing and deployment, picking up data development tasks within … benefits including corporate membership to ClassPass Paid volunteer time to step away from your desk and into the community Support to grow through professional development courses, tuition/qualification reimbursement and more All-inclusive approach to Diversity, Equity and Inclusion Maternal/paternal leave benefits and family services Complimentary … articulating complex technical concepts to non-technical audiences. Experience with modern technology stacks, agile methodologies, and cloud computing Experience of working with geographically disperse development teams Strong knowledge of Asset Management data Nice to have skills Experience of micro-service development and API development Degree educated more »
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Senior C# Engineer (Full Stack) – .Net 6 (or later), Blazor, RabbitMQ, PaaS, Azure, Docker, Swagger - Global

Greater London, England, United Kingdom
Smart Sourcer
and Executive Technology Stakeholders to shape and deliver disruptive technology solutions. You’ll require the following skills and experience: Extensive experience operating in senior development & engineering positions following industry best practices Extensive experience of up-to-date C# and the .Net ecosystem (.Net 6 or later) within Azure environments … of immutability & idempotence Experience authoring and maintaining CI/CD pipelines Experience with a variety of database technologies (inc. SQL Server) Experience of modern API development e.g. Swagger Experience of UI development with Blazor In depth knowledge of scalable, secure & high performance cloud engineering platforms Exposure to more »
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Software Engineer - Python & TypeScript

London, England, United Kingdom
Fruition IT
use of their data. As the Software Engineer, you will interpret client objectives and requirements to develop solutions that drive insight into the product development process. You will will be an integral part of the project's software development team. Key responsibilities: Develop and maintain deployment pipelines, utilising … CI/CD pipelines to assist with automated testing and infrastructure provisioning. Key requirements: Strong Python and/or TypeScript/JavaScript experience (for API development). Experience with Kubernetes/Docker Swarm/Openshift Relevant Clearance - DV/EDV level. If you are interested in the role more »
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Sitecore Lead Developer

London Area, United Kingdom
Zensar Technologies
opportunity to design new systems or re-design current applications. Here's how you'll contribute: Leading, Managing and owning all aspects of technical development and delivery Understanding requirements and writing technical architecture documents Ensuring the code reviews and development best practices/processes to be followed Planning … Hands on Experience on Sitecore Version Used 10.X version & above. Knowledge of Sitecore Helix & Habitat Framework Sitecore SXA, Sitecore JSS, Sitecore XM Cloud Experience (Development and Migration) Resolve user-identified functional and technical issues relating to Sitecore Backend Layer (Sitecore API/Personalization/Marketing Module etc.. ) Back … end, and API development using the .Net framework + Sitecore API and the C# language. Build and Apply Personalization Rule. Build Sitecore Pipeline + Extend Sitecore Core functionality using Sitecore API PowerShell Scripting (Read Sitecore Items) Import and Export Content Multisite Solution Implementation using Sitecore Platform more »
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Software Developer

London Area, United Kingdom
Hybrid / WFH Options
Janus Henderson Investors
The Global Technology department has 400+ employees, running numerous change projects across all areas of the firm, including vendor implementations, regulatory change, in-house development, as well as overseeing change delivery from third party suppliers. The Fixed Income Quant Platform Team sits within the Fixed Income Technology department and … on role, and you will be expected to take ownership of key initiatives from design to delivery and to contribute to the architecture and development practices. This role is closely integrated with the investment team. It is therefore important that you can communicate and collaborate effectively across all areas … and reasonable accommodations. Generous Holiday policies Paid volunteer time to step away from your desk and into the community. Support to grow through professional development courses, tuition/qualification reimbursement and more. All-inclusive approach to Diversity, Equity, and Inclusion Maternal/paternal leave benefits and family services Complimentary more »
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Backend Engineer

London Area, United Kingdom
Hybrid / WFH Options
La Fosse
is partnering with a cutting edge start up looking to complement their existing team. You would have a lot of ownership, autonomy, learning and development opportunities within this team, and they put collaboration at the heart of everything they do. They have a really high performing team, yet maintain … a friendly culture. Key Requirements: Python & API development – Flask/FastAPI/Django PostgreSQL + Relational DB’s Good communication skills MSc or PHD in computer science or mathematics Cloud experience – AWS/GCP preferred Nice to have: ML stack in Python Java Terraform Compensation: This role is more »
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Full Stack Team Lead

London Area, United Kingdom
Hybrid / WFH Options
GIMO Global Interactive Marketing Online Ltd
Casino777, Bet777, betFIRST, and Livepartners. We have a very multicultural team here at GIMO with employees specialising in all aspects of Marketing, Affiliation Marketing, Development, Web Design, Content, Analysis, Software Development and Customer Service. THE ROLE We are looking for a full-time Full Stack Team Lead with … the team, addressing problems/blockers/issues for our sizable technical teams. Person Specifications: Proven experience as a Lead with strong backend software development skills Mastery in at least one major PHP framework (Phalcon, Laravel, Symfony, etc.) Proven prowess with React (with React Native or Next.js framework) In … depth understanding of MySQL and Redis. Familiarity with Kafka. Mastery of RESTful API development. Nice-to-Haves: Node.js proficiency, especially with websockets. Acquaintance with TypeScript. Experience working with unit and integration testing frameworks. Previous team/tech leading experience – Especially if you've successfully managed challenges and blockers for more »
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API Product Evangelist - Developer Marketplace

London, United Kingdom
Hybrid / WFH Options
Ventula Consulting
API Product Evangelist - Developer Marketplace One of the worlds great telecoms companies is expanding its developer marketplace. This company are a global brand name renowned for product innovation. This is an exciting and rare opportunity to join an empowered team which operates as an agile start-up, whilst equally … the way our business operates and who will help shape the set-up of our new Developer Marketplace channel. They are seeking a dynamic API Product Specialist/Evangelist to join our team. The API Product Specialist will work with Business product teams to help design and deliver … the successful adoption of API based products and services via Developer Marketplace. This will involve providing consultancy on API technologies to the wider organisation, contributing to product development initiatives, and ensuring alignment with the development of strategic product portfolios and API relevant industry initiatives Responsibilities more »
Employment Type: Permanent
Salary: GBP 110,000 Annual
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Python Developer

City of London, London, United Kingdom
Certain Advantage
Initial contract till the end of the year London - 3 days onsite We are seeking a highly skilled Python Developer with extensive experience in API systems programming. The ideal candidate should possess a deep understanding of distributed asynchronous systems, including their design principles and implementation. Proficiency in utilising Kafka … is essential for this role. The candidate should be adept at developing scalable, efficient, and reliable solutions using Python. Responsibilities: Design, develop, and maintain API systems using Python. Architect distributed asynchronous systems and design their components. Implement solutions leveraging Kafka for data streaming and messaging. Collaborate with cross-functional … Optimize system performance and scalability. Ensure code quality through testing and code reviews. Stay updated with the latest technologies and industry trends related to API systems and distributed systems. Requirements: Proven experience as a Python Developer with a focus on API systems programming. In-depth understanding of distributed more »
Employment Type: Contract
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Senior Backend Engineer (Node.JS, Ruby, Kafka)

Greater London, England, United Kingdom
Zebra People
search functionality within the platform. Because of this, there’ll be the opportunity for you to write a lot of new code, increase APIs development, and ultimately ensure the platform's software components are versatile enough to effectively tackle various user cases and scenarios. What experience do I need … a product based company. Primarily you’ll be working on the backend of their stack with Node.JS, Ruby, and Kafka, impacting everything from the development of APIs and the user interface to the database. However, they know that a good developer can pick up a new language quickly, so more »
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Head of Information Technology

London Area, United Kingdom
Harrington Starr
Tech Lead – Head of Solutions. JavaScript, Typescript, HTML, CSS, Restful API’s, Web Development, Trading Systems, WEB API tool kits, OOP (java, c#, c++) Perm Roles – Total Comp - £200’000 plus benefits Harrington Starr is proud to Partner with a Global Leading Financial Technology Vendor that specialise … apps using a range of technologies, experience with Hands on Software Engineering team covering a range of tech from JavaScript and Typescript with RESTful API development. You will have used RESTful API tool kits and have knowledge of some OOP language’s such as C#, Java or C++. … Key Skills:Experience as a Head or Team Lead within a Software Engineering Team Experience with Restful API Experience with RESTful API Tool kits Integration Development of Trading systems – OOP (C#, JAVA, C++) Cloud based technologies. Experience and knowledge of Cross Asset classes – Equities, FICC, Futures & Options. more »
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Senior Software Engineer

London Area, United Kingdom
Hybrid / WFH Options
Bridgewater Resourcing Solutions Limited
platform, the company is now hiring for a senior level Back-End Software Developer who is looking to take ownership of the back-end development and DevOps function. The role will offer autonomy, ownership, creativity, problem-solving while offering flexibility in working. This is an opportunity to make a … Languages will be: Javascript, Go, SQL Key Responsibilities of our Lead Back-End Software Engineer You will: Implement backend functionality and features e.g building API for front-end, optimising response speed, image compression, payments-processing, OAuth management amongst others. Handle backend integration for services such as a code execution … platform, authentication, and other API’s. DevOps - Handle deployments to production. Maintain self-hosted services on bare metal server infrastructure. Database management - Maintain efficiency, handle migrations, and manage the Postgres database. Identify performance bottlenecks. Analytics - build out queries and data analytics to monitor and find ways to improve the more »
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Frontend Developer

London Area, United Kingdom
Omni
to develop and lead building of dashboards in various areas. Key responsibilities collaboratively with colleagues and to lead and projects. and lead full software development life cycle from taking user inputs to producing requirements documents and development, deployment and monitoring. single-page web applications using modern Javascript frameworks … React etc. well-designed, testable code using principals of OOP and design patterns. projects through to productions where appropriate. appropriate UX requirements and software development documentation. Dashboards or other Single page applications on Azure or some other cloud platform. Automated tests and unit testing to ensure quality and robustness. … collaboratively with the server side engineers on relevant API development and give the appropriate API requirements. debug and upgrade existing systems, do code review and maintain git repositories. as knowledge source and mentor to advise less experienced engineers across the wider team during implementation/experimentation phases. more »
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AI / ML Engineer

London Area, United Kingdom
AWTG Ltd
advanced neural network models to meet specific functional requirements. Deployment and Integration : Efficiently deploy these neural networks on servers, ensuring optimal performance and scalability. API Development : Create robust API endpoints for model access, enabling seamless integration with external systems or applications. Platform Development : Architect and develop … a user-friendly platform where multiple AI models are accessible and can be utilized through API calls, facilitating a broad range of AI capabilities. Continuous Improvement : Continuously monitor, update, and improve the models and the platform based on user feedback and evolving technological trends. Skills and Qualifications: Minimum … neural network algorithms. Proficient in programming languages like Python, and frameworks such as TensorFlow or PyTorch. Experience with server deployment, cloud computing environments, and API development. Good understanding of software engineering best practices. Excellent problem-solving abilities and a keen eye for detail. Strong communication skills to collaborate effectively more »
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Senior Full Stack Python Developer

London Area, United Kingdom
Service Care Solutions
experienced Full-Stack Developer to coma and join an exceptional team based in Canary Wharf. Working for a passionate company that is driving the development and engineering of engineering platforms across the UK. They are an eco-focused, lo-carbon business that has made an amazing impact across the … and using related tools – e.g., Docker, Docker Compose, Kubernetes, logstash and using messaging tools e.g. Rabbit MQ, Apache Kafka. Databases – e.g., SQL, PostgreSQL. RESTful API development and management. Performance Tuning. Solid understanding of design patterns and relevant implementation models. Solid understanding of DevOps tooling, GitLab, CI/CD more »
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Frontend Developer

London, England, United Kingdom
Arrows
Full Stack Developer - React.JS - Python - Rest API - SQL - 6 Months - Paying up to £615 (Inside IR35) - Hybrid As a Full-Stack Engineer you will collaborate with a cross functional team to design and develop systems that operate on a wide range of data sets. You will work closely with … them into technical specifications and solutions. Utilize AWS Gateway to build, deploy, and manage APIs securely and efficiently. Develop server-side logic using FAST API and other relevant technologies to ensure robust and scalable backend systems. Ensure the performance, reliability, and scalability of applications and APIs through thorough testing … the entire stack, from front-end to back-end. Requirements: Proven experience working as a Full Stack Engineer, with a focus on React JS development and API design and development. Strong proficiency in React JS and its core principles, with a deep understanding of component-based architecture, state more »
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Java Software Engineer

London Area, United Kingdom
HCLTech
Tomcat/Kafka, SAML IAM workflows memory optimization and its relevant tools. From a technology perspective, we require 10+ years of experience in software development as an lead developer. The candidate should be able to demonstrate experience with: •Minimum 7 year experience with strong application development on Java … like GCP/AWS/Azure •Exposure and knowledge on Docker, Google Kubernetes environment is preferred. •Experience in spring framework, spring boot and REST API development with data processing and storage solutions on GCP/AWS/Azure •Hands on experience on application security implementation, SAML, OAuth 2.0 … API Security and fair understanding of deployments on POD. · Fair understanding of web frameworks, java script technologies is good to have and libraries •Good in communication (Interaction with global teams/business is very important) •Steep learning curve – ability to learn and apply new technology in development. •Strong problem more »
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AWS Python Engineer

London Area, United Kingdom
Hybrid / WFH Options
Areti Group
delivering a suite of market-leading, cloud-native and device-native applications. AWS Python or another OOP language such as C# or Java RESTful API development Serverless AWS or Azure Docker/Kubernetes CI/CD, Gitlab or Jenkins RDBMS Automated testing ---------------------------------------------------------------------------- Remote & Hybrid London working options available more »
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Full Stack Laravel Developer

Greater London, England, United Kingdom
Hybrid / WFH Options
Christy Media Solutions
workflows and is optimised to manage, distribute, monetise and analyse live and on-demand video. In joining the team, you'll focused on backend API development using Laravel whilst enhancing their browser-based CMS frontend using the TALL stack. Key responsibilities: Build solutions that leverage object-oriented and … with the TALL stack (Tailwind, Alpine.js, Laravel and Livewire) Understanding of Laravel Queues, Jobs, Horizon, Supervisor, Laravel Pint, Larastan, RectorPHP, Laravel Shift Containerised application development Experience in a TDD environment using PHPUnit, PestPHP or Laravel Dusk Understanding of AWS Experience within the media sector or video streaming This is more »
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Data Product Manager

London, England, United Kingdom
Harnham
innovative solutions to empower organisations in making informed decisions and driving positive outcomes THE ROLE AND RESPONSIBILITIES This role is crucial for driving the development and delivery of cutting-edge data products that empower our clients to harness the power of data In this role you will be: Overseeing … the database Develop and maintain the logic for KPI calculations that underpin core products and services working closely with the technical teams to implement API developments Serving as a bridge between the technical team and data providers to facilitate the development and implementation of integration's Implement best … to data integration YOUR SKILLS AND EXPERIENCE Please apply if you have the following: A strong understanding of data structures, databases, ETL processes and API development Proficient in project management and communication A proven track record of successfully bringing data products to market and driving adoption and usage more »
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Data Product Manager

London, England, United Kingdom
Harnham
the businesses database, develop and maintain the logic for KPI calculations for core products and services, working with other teams to implement these for API development Serve as the bridge between the tech teams and data providers to facilitate the development and implementation of intergrations Implement and … KPIs to assess the success and impact of data in the products YOUR KEY SKILLS AND EXPERIENCE Strong background in product management and product development Technical expertise in SQL, JIRA and Salesforce Proven experience in data management and integration THE BENEFITS Up to £70,000 + benefits Hybrid London more »
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Laravel Developer

London Area, United Kingdom
Hybrid / WFH Options
Opus Recruitment Solutions
be great. The role is fully remote, outside IR35 and has a possibility of extension after 6 months. Essential skills: PHP | Laravel | Vue | MySQL | API Development Nice to have: ERP experience. If you are interested, then please send me a copy of your most up to date CV more »
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Technical Lead

Greater London, England, United Kingdom
UST
Technical Lead (API design) UST is currently recruiting for a Technical Lead (fixed term contract) role who comes with a strong technical background to join their award-winning team. About the role The successful candidate will be a team player with a proven background of managing IT teams, a … solid technical background and possess excellent analytical, problem-solving skills and excellent communication and stakeholder management skills. Key Deliverables: o Experience in managing IBM API Connect Gateway projects o Experience in managing and delivering the technical aspects of migration projects o Be well-versed in REST fundamentals and API design best practices. o Closely work with API developers/testers/analysts/engineers and help them with their day-to-day constraints and supervise their work. o API design using tools provided by the IBM API Connect V5/V10 suite. Experience on Apigee more »
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Python Developer

London Area, United Kingdom
Hybrid / WFH Options
Stealth Startup
on an AI Tech solution for employees. Coming in a building out product APIs to create scalable highly performant services using Python/Fast API/AWS Lambda on AWS related services. Requirements: Experience using AWS cloud services 3+ years Python Development (Flask or Similar framework) API development using FAST API Bonus Points Experience working in an LLMs/ML environments Flask/Python/Software Engineer/Fast.API/LLM/AI/Flask more »
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Senior C# Developer

London Area, United Kingdom
Hybrid / WFH Options
Nicoll Curtin
Applications team, contributing significantly to the design, implementation, and maintenance of business and information system solutions. Your expertise will be pivotal in guiding the development process, ensuring alignment with business requirements, and delivering successful outcomes. Responsibilities: Design technical solutions for new software applications or enhancements to existing ones. Develop … Review code and test software developed by team members. Document application details to facilitate future maintenance. Provide support for production issues, particularly related to development activities. Collaborate with management and stakeholders to define programming tasks. Adhere strictly to established programming standards. Recommend improvements to internal standards and procedures as … needed. Key Skills: Strong command of C# programming language Proficiency in .NET framework Experience with Web API development Familiarity with JavaScript and Angular for front-end development Competence in SQL database management This is a full-time position with a competitive salary of up to £78k, inclusive more »
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API Development
London
10th Percentile
£54,250
25th Percentile
£64,375
Median
£77,500
75th Percentile
£87,500
90th Percentile
£97,500