13 of 13 API Development Jobs in the City of London

Data Engineer – Onsite (Central London) ⭐️ £50,000 – £55,000 + benefits ⭐️ 5 days onsite – Central London ⭐️ SQL, Python, API development ⭐️ Financial background preferred Join a leading investment management firm with a strong reputation for innovation in the financial sector. This is a fantastic opportunity to play a key role in building and maintaining robust data infrastructure supporting high … for a hands-on Data Engineer with solid SQL skills and experience in building and maintaining back-end APIs. SQL - strong experience essential. Python experience required. Proven experience in API development and maintenance. Previous experience within a financial services or investment management environment preferred. Strong analytical mindset and attention to detail. Excellent problem-solving and communication skills. More ❯

Data Engineer – Onsite (Central London) ⭐️ £50,000 – £55,000 + benefits ⭐️ 5 days onsite – Central London ⭐️ SQL, Python, API development ⭐️ Financial background preferred Join a leading investment management firm with a strong reputation for innovation in the financial sector. This is a fantastic opportunity to play a key role in building and maintaining robust data infrastructure supporting high … for a hands-on Data Engineer with solid SQL skills and experience in building and maintaining back-end APIs. SQL - strong experience essential. Python experience required. Proven experience in API development and maintenance. Previous experience within a financial services or investment management environment preferred. Strong analytical mindset and attention to detail. Excellent problem-solving and communication skills. More ❯

We are looking for a API solution architect who has had experience of dealing with Cognizant. Key Responsibilities • API Strategy & Leadership • Define and own the API delivery roadmap aligned with business and digital transformation goals. • Evangelize API-first architecture across the organization. • Lead and mentor a high-performing team of API developers, product owners, and … delivery managers. • Program & Delivery Management • Oversee the successful delivery of API projects from concept to production across multiple teams and geographies. • Establish KPIs and OKRs to measure performance, velocity, and reliability of API releases. • Ensure timely delivery while maintaining high quality, scalability, and security standards. • Architecture & Governance • Work closely with architects and platform teams to ensure consistent and … scalable API designs. • Establish API governance models, including versioning, security, documentation, and usage guidelines. • Ensure compliance with relevant standards (e.g., REST, GraphQL, OpenAPI, OAuth2). • Stakeholder & Partner Collaboration • Collaborate with internal business units, external partners, and clients to understand integration needs. • Act as the point of contact for strategic API integrations with partners and third-party platforms. More ❯

We are looking for a API solution architect who has had experience of dealing with Cognizant. Key Responsibilities • API Strategy & Leadership • Define and own the API delivery roadmap aligned with business and digital transformation goals. • Evangelize API-first architecture across the organization. • Lead and mentor a high-performing team of API developers, product owners, and … delivery managers. • Program & Delivery Management • Oversee the successful delivery of API projects from concept to production across multiple teams and geographies. • Establish KPIs and OKRs to measure performance, velocity, and reliability of API releases. • Ensure timely delivery while maintaining high quality, scalability, and security standards. • Architecture & Governance • Work closely with architects and platform teams to ensure consistent and … scalable API designs. • Establish API governance models, including versioning, security, documentation, and usage guidelines. • Ensure compliance with relevant standards (e.g., REST, GraphQL, OpenAPI, OAuth2). • Stakeholder & Partner Collaboration • Collaborate with internal business units, external partners, and clients to understand integration needs. • Act as the point of contact for strategic API integrations with partners and third-party platforms. More ❯

be collaborating with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis … Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management skills You are … you: As a Senior Software Engineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior Software Engineer/Developer (C# .Net) opportunity. At More ❯

be collaborating with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis … Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management skills You are … you: As a Backend Software Engineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Backend Software Engineer/Developer (C# .Net) opportunity. At More ❯

up new horizons, our faith in its potential unveils a new outlook where, together, humans and machines build a new future filled with knowledge, inspiration, and incredible discoveries. The development of a functional humanoid robot underpins an era of abundance and well-being where poverty will disappear, and people will be able to choose what they want to do. … low-level language (e.g., C++, C, Bash) for developing robot-side services. Strong experience with React (or similar frameworks) for creating user-friendly and scalable web applications. Expertise in API development, data handling, and creating scalable service architectures. Proficiency with CI/CD pipelines, containerization (e.g., Docker, Kubernetes), and workflow automation. Understanding of network protocols and secure data More ❯

up new horizons, our faith in its potential unveils a new outlook where, together, humans and machines build a new future filled with knowledge, inspiration, and incredible discoveries. The development of a functional humanoid robot underpins an era of abundance and well-being where poverty will disappear, and people will be able to choose what they want to do. … low-level language (e.g., C++, C, Bash) for developing robot-side services. Strong experience with React (or similar frameworks) for creating user-friendly and scalable web applications. Expertise in API development, data handling, and creating scalable service architectures. Proficiency with CI/CD pipelines, containerization (e.g., Docker, Kubernetes), and workflow automation. Understanding of network protocols and secure data More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have (not essential): Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

in daily stand-ups, sprint planning, and other agile ceremonies. Education, Skills & Experience: Strong experience as a full stack developer but with a deep understanding of modern front-end development best practices. Extensive experience with JavaScript, TypeScript, and modern front-end frameworks (React preferred). Proficiency with CSS preprocessors, HTML5, and CSS3. Familiarity with RESTful APIs, source control (git … and Agile methodologies. Desirable: Experience with .NET/.NET Core, Dapper, Entity Framework, MS SQL Server, and API development. Strong experience working with NPM/Yarn, bundlers (Webpack/Vite), and build tools Why Join? Be part of a diverse and inclusive team. Work in a hybrid environment with flexibility (2 days per week in London) Contribute to innovative … projects. Continuous learning and professional development opportunities. Ready to take your career to the next level? Apply now and help shape the future of legal and professional services! Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy. More ❯

Axway API Developer (SC Cleared) ?? 6 months contract Inside IR35 ?? £500 to £650 a day ??Remote Working (UK based) A top-tier defense organization is looking for an experienced Axway API Developer/Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and active SC clearance is required. … liaising with stakeholders to define requirements and design comprehensive solutions. To be successful in this role, you should have a solid foundation in: Axway's core products: Policy Studio, API Gateway, and API Manager. Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. Data and messaging formats: JSON, XML, SOAP, and REST. Linux scripting and environments. Using … DevOps toolsets to automate testing and deployments. 6 months contract Inside IR35 - Remote Working - ?? £500 to £650 a day If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you. If the above sounds of interest to you then please apply directly to the AD or More ❯