26 to 50 of 120 API Development Jobs in London

basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯

basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯

basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯

basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯

our Head of Customer Support to build next-generation systems that enable our team to deliver world-class support efficiently and effectively. What Makes This Role Special High-Impact Development : Every system you build directly affects customer satisfaction and business growth. Your technical solutions will be measured by real business outcomes. Cutting-Edge AI Integration : Work at the forefront … engineering challenge of doing more with less. Full Ownership : Take end-to-end ownership of internal platforms, from conception through deployment and ongoing optimization. Core Responsibilities Technical Integration & Platform Development Design and implement robust API integrations between Intercom, internal systems, and third-party platforms Build and maintain our internal web-based admin tools and dashboards Develop scalable, maintainable … streamline complex workflows Research, prototype, and implement emerging technologies that enhance customer experience Develop intelligent routing and escalation systems Create A/B testing frameworks for automation initiatives Backend Development & Analytics Build backend systems that capture and process customer interaction data Develop dashboards and reporting tools that measure system performance and effectiveness Create analytics features that help identify patterns More ❯

dependent on the business needs. Salary range: £57,600 - £92,400 (depending upon experience) Contract type: Permanent Key responsibilities You will work as a software engineer specialising in iOS development within a cross-functional Agile development team. You'll be working collaboratively with other highly skilled iOS Engineers as well as Android engineers, BAs, Quality Engineers, Designers and … User Experience specialists on challenging customer-facing projects. As a Staff Engineer you will have responsibility for the development approach and provide technical assurance on complex IT projects. You will also use your knowledge of software engineering to support shaping of new projects and support the professional development of less experienced software engineers. You will work with a … iOS and XCUnit Experience building mobile app frameworks, Cocoapods and SPM Experience using both UIKit and SwiftUI Accessibility best practice Continuous Integration/Continuous Delivery TDD, pair programming Agile development methods such as Scrum or Kanban REST API development and/or consumption Experience with building highly performant, scalable applications Deep understanding of MVVM and MVP Significant More ❯

of black female developers. We are the largest network of black female developers in the UK. Mission Our mission is to grow the community of black women in software development and technical roles, from entry level to executive level. We will remove the barriers to enter the industry and progress within roles. Aim Our main aims are: Build the … for our community to learn new skills, and share their skills with other people in the community Support the community through mentoring, providing a safe space for discussions and development Job Description Coding Black Females deliver bootcamps ranging from 6 weeks to 30 weeks. We are looking for a Software Development Instructor to lead one or more of … our bootcamps from start to finish, ensuring successful delivery and impactful learning experiences. We are seeking an enthusiastic and experienced Software Development Instructor to lead the delivery of our new Software Development Bootcamp, tailored for individuals looking to gain practical, job-ready skills in programming and software creation. The bootcamp aims to enhance participants' abilities in areas such More ❯

Reporting to the Head of Integrations, the Software Engineering Lead will be responsible for leading the development of the User interfaces, APIs, associated micro-services and any/all related application code through a full, methodical and robust software development life-cycle. The responsibilities include: Software Development: Web-based user interfaces, REST and GQL APIs, associated micro … of the skills of others within the team to utilize knowledge Team Leadership & Management: Build and lead a high performing team of software engineers. Provide guidance, mentorship and professional development opportunities to team members. Provide Technical Leadership. Perform 1:1 with direct reports. Conduct professional performance evaluations at the cadence of company policy. Research and evaluate emerging developments and … best practise within the development space, including: Continuously improving your skill-set in technology, software or technical methods that will enhance your contributions to the goals and objectives of the business. Evaluating and suggesting ways to improve team and business productivity using new tooling, process improvements and/or new methods of working. Undertake ad-hoc activities and projects More ❯

and production-grade digital solutions for the financial services sector. This is a hands-on engineering role ideal for someone with strong experience in Java , Spring Boot , microservices , and API development , who thrives in collaborative, high-accountability environments. The successful candidate will contribute to backend service design, secure API delivery, and the development of reusable engineering … Key Responsibilities Design, develop, and maintain backend services using Java and Spring Boot Build and integrate secure APIs aligned with industry standards (e.g., OAuth2, OpenID Connect) Contribute to the development of microservices architectures and distributed systems Collaborate with frontend, DevOps, and QA teams to deliver cohesive, end-to-end solutions Participate in technical design sessions, code reviews, and architecture … Ensure adherence to Agile delivery practices, CI/CD pipelines, and DevSecOps principles Required Skills and Experience Strong hands-on experience with Java , Spring Boot , and enterprise-grade backend development Proven experience designing and implementing secure APIs and service integrations Solid understanding of microservices architecture , service orchestration, and distributed systems Experience working in regulated environments such as banking, fintech More ❯

based solutions. Your mission is to design, build, and deploy innovative solutions that transform our internal processes and client services. You will be the technical authority for Python-based development, setting patterns, standards and best practices. You'll be responsible for: Python Roadmap: Set the technical direction for Python-based development, evaluating tools and establishing frameworks. Development Standards: Define and adhere to internal development standards, ensuring quality, security and scalability. Mentorship: Mentor developers, enhancing their skills in Python through code reviews and knowledge sharing. Collaboration: Work with stakeholders to identify opportunities for Python-based developments and translate requirements into solutions. Team Management: Manage third-party developers or full-time employees as needed. Solution Design and … Matplotlib, Seaborn and Scikit-learn. MLOps: Experience building pipelines (CI/CD) using Bicep or similar technologies. Expertise in deploying, monitoring and managing machine learning models in production environments. API Development: An understanding of REST. Experience with Flask or FastAPI. Data Validation: Knowledge of Pydantic for data validation. Scripting and Prototyping: Use of Jupyter Notebooks for quick prototyping. More ❯

from trade capture and pricing to live risk, P&L tracking, and position keeping. You will join the client's internal team directly to help strengthen their in-house development capabilities and drive platform growth. What you'll do: Design, develop, test, and deploy solutions for the platform. Write clean, maintainable code with a strong focus on unit testing. … Maintain coding standards, guidelines, and best practices across the team. Promote high-quality documentation throughout the development process. Contribute to platform quality, infrastructure, and release process management. Provide technical support to developers and business stakeholders. Prioritize security, maintainability, scalability, code quality, and future-proofing. Assist with cloud infrastructure maintenance, monitoring, and alerting. Manage multiple development threads, including feature … development, refactoring, bug fixing, client customizations, and data mapping. What we're looking for: Strong technical background with experience collaborating with distributed teams. Excellent communication, analytical skills, and a collaborative mindset. Highly self-organized and technically driven. Solid experience with C#, .NET Core, and modern cloud environments (preferably Azure). Hands-on experience with frontend development using React More ❯

VesselMan offers a supportive and engaging work environment, prioritizing continuous learning and growth. This is a unique opportunity to work closely with experienced developers and architects skilled in backend development utilizing MS Azure, Amazon AWS, modern integrations, and data analytics/AI/ML. Responsibilities include: Utilize data analytics and ML/AI tools to leverage data within the … deliver high-quality solutions. Minimum qualifications: Bachelor's degree in IT, Computer Science, or related field 3+ years of proven experience as a full-stack developer Experience developing REST API endpoints Experience with Data Analytics, ML/AI Experience with system integration Experience using NoSQL/SQL databases Previous enterprise-level experience Maritime industry background Experience with cloud platforms … like Azure or Amazon AWS Knowledge of machine learning principles and models Knowledge of Deep Learning principles and models Experience with RDBMS and programming in Java/Python, including API integrations Knowledge of RESTful API development and integration Understanding of version control systems (e.g., Git) Specific tools include: Python Libraries like Scikit-learn or TensorFlow SQL and More ❯

and production-grade digital solutions across multiple client engagements in the financial services sector. This role is ideal for an engineer with strong experience across both Java-based backend development and modern frontend frameworks such as Angular or React . The successful candidate will contribute to full lifecycle solution delivery, from architecture and development to deployment and support … to-end solutions Participate in architecture reviews, sprint planning, and technical design sessions Ensure adherence to modern engineering practices including Agile , CI/CD , and DevSecOps Contribute to the development of reusable engineering assets and CoE best practices Engage with stakeholders to translate business requirements into technical solutions Required Skills and Experience Strong hands-on experience with Java , Spring … Boot , and RESTful API development Proficiency in Angular or React , along with JavaScript/TypeScript, HTML5, and CSS3 Experience delivering full stack solutions in enterprise-grade environments Familiarity with CI/CD pipelines , containerisation (e.g., Docker), and cloud platforms (e.g., AWS, Azure) Experience working in regulated industries such as banking, fintech, or insurance Prior experience working in or More ❯

Cloud. Microservice Architectures. Cloud Platforms such as AWS, GCP or Azure. Web technologies including HTML, CSS, advanced Javascript, Web Services. Continuous Integration/Continuous Delivery. BDD, pair programming. Agile development methods such as Scrum or Kanban. REST API development and/or consumption. Relational databases MySQL, SQL Server, Postgres, etc. Experience in frontend work, eg. Java Script More ❯

one, you'll join a collaborative digital team, gaining exposure to real-world projects. You'll have the chance to work alongside experienced developers, learning best practices in web development, security, and fault diagnosis. With opportunities to contribute to everything from debugging User issues, to supporting with development of new features, to fixing security issues, this is a … and support, key Ofgem scheme applications. Complete personal training as per learning objectives relating to technical skills with the objective of becoming a full stack developer and undertake greenfield development of Ofgem schemes. Key Outputs and Deliverables Triage of service requests and/or Incidents by replication and in turn identifying the appropriate solution. Maintain Service Request tickets and … items on Azure DevOps backlog. Maintain documentation relating to the Application Support Team and contribute to the wider Digital Development Teams documentation store in various locations, such as the Azure wiki, Confluence, SharePoint. Identify improvements in the Applications Support work area. Supporting the Development Team within an agile project setting, delivering work items accordingly and meeting sprint timelines. More ❯

work with your colleagues, stakeholders and third parties, to align on requirements and deliver a user experience you can be proud of. The role requires demonstrable experience of backend development using PHP and MySQL, and includes full lifecycle development of RESTful APIs and web apps which can operate at scale on AWS. You will appreciate the benefits of … issues in a full-stack application; from browser to the database. Experience of software architecture and presenting technical designs to your team and stakeholders. Demonstrable expertise and understanding of API development/design and experience interfacing with disparate systems. Excellent communicator with a self-starter attitude and comfort working autonomously. Applicable understanding of software security, common exploits and … secure development practices, including the OWASP Top 10. Proven and demonstrable understanding of testing methodologies and frameworks. Commercial experience with AWS and IaC (Terraform/CDK/CloudFormation) Commercial experience with Linux, Docker, Docker Compose, Git and DynamoDB. About Us Arrive, including brands like EasyPark, Flowbird, RingGo, ParkMobile and Parkopedia, is a leading global mobility platform. Present in over More ❯

work with your colleagues, stakeholders and third parties, to align on requirements and deliver a user experience you can be proud of. The role requires demonstrable experience of backend development using PHP and MySQL, and includes full lifecycle development of RESTful APIs and web apps which can operate at scale on AWS. You will appreciate the benefits of … issues in a full-stack application; from browser to the database. Experience of software architecture and presenting technical designs to your team and stakeholders. Demonstrable expertise and understanding of API development/design and experience interfacing with disparate systems. Excellent communicator with a self-starter attitude and comfort working autonomously. Applicable understanding of software security, common exploits and … secure development practices, including the OWASP Top 10. Proven and demonstrable understanding of testing methodologies and frameworks. Commercial experience with AWS and IaC (Terraform/CDK/CloudFormation) Commercial experience with Linux, Docker, Docker Compose, Git and DynamoDB. About us Arrive, including brands like EasyPark, Flowbird, RingGo, ParkMobile and Parkopedia, is a leading global mobility platform. Present in over More ❯

work with your colleagues, stakeholders and third parties, to align on requirements and deliver a user experience you can be proud of. The role requires demonstrable experience of backend development using PHP and MySQL, and includes full lifecycle development of RESTful APIs and web apps which can operate at scale on AWS. You will appreciate the benefits of … issues in a full-stack application; from browser to the database. Experience of software architecture and presenting technical designs to your team and stakeholders. Demonstrable expertise and understanding of API development/design and experience interfacing with disparate systems. Excellent communicator with a self-starter attitude and comfort working autonomously. Applicable understanding of software security, common exploits and … secure development practices, including the OWASP Top 10. Proven and demonstrable understanding of testing methodologies and frameworks. Commercial experience with AWS and IaC (Terraform/CDK/CloudFormation) Commercial experience with Linux, Docker, Docker Compose, Git and DynamoDB. About us Arrive, including brands like EasyPark, Flowbird, RingGo, ParkMobile and Parkopedia, is a leading global mobility platform. Present in over More ❯

processes across pre-trade, execution and post-trade client operations, while enabling asset managers to distribute their products through a scalable "Alternatives-as-a-Service" framework. Vega's modular, API-driven architecture ensures compatibility with a broad range of existing point solutions and third party stakeholders, setting the foundations for the first purpose-built infrastructure layer for the alternatives … Spring Boot, ensuring best practices in modularity, resilience and maintainability Cloud & Infrastructure: play a crucial role in our cloud infrastructure with Kubernetes (K8s) on AWS, leveraging Docker for containerisation API Development: develop and optimise RESTful APIs to support our frontend applications built with React and TypeScript Platform Integration: ensure seamless integration of our platform with third-party systems … practices for securing data, ensuring compliance with industry standards and regulations Best Practices & Code Quality: advocate for clean code, automated testing, and DevOps best practices, ensuring high-quality software development and deployment processes Mentorship & team growth: provide technical leadership and mentorship to engineers, building a culture of excellence, innovation and continuous learning Qualifications 10+ years of experience in back More ❯

exceptional team as a Full Stack Python Engineer and be part of a growing group of skilled software engineers, data modellers and quant analysts. Together, they are driving the development and maintenance of this great client’s cutting-edge digital platform, powering multiple applications like settlements tools, forecasting systems, calculation engines, data portals and much more. The ideal candidate … will have strong Python/Django and 3 years Frontend experience using React or Vue.js. This is a role for a candidate with Full Stack Web development experience. Fantastic benefits, pension, sabbatical, training and development, working lunches, wellbeing, season ticket loan, 10% bonus and much more The role is 2 days in their Canary Wharf office only and … up-to-date with emerging technologies and industry trends to drive innovation within the team. Key Requirements Essential: At least 3 years’ experience of coding in a Python web-development framework, preferably Django. At least 3 years’ experience of coding in a front-end capacity (preferably React) Container-related tools - e.g., Docker, Docker Compose Databases - e.g., SQL, PostgreSQL. RESTful More ❯

our exceptional team as a Full-Stack Engineer and be part of a growing group of skilled software engineers, data modellers and quant analysts. Together, we're driving the development and maintenance of LCCC's cutting-edge digital platform, powering multiple applications like settlements tools, forecasting systems, calculation engines, data portals and much more. Make a meaningful impact by … date with emerging technologies and industry trends to drive innovation within the team. Skills, Knowledge and Expertise Essential: At least 3 years' experience of coding in a Python web-development framework, preferably Django. At least 3 years' experience of coding in a front-end capacity (preferably JavaScript and React). Container-related tools - e.g., Docker, Docker Compose. Databases - e.g. … SQL, PostgreSQL. RESTful API development and management. Proactive Performance Tuning. Solid understanding of design patterns and relevant implementation models. Solid understanding of DevOps tooling, GitLab, CI/CD, Jenkins, build pipelines and source control systems. Working knowledge of cloud infrastructure services (preferably AWS): computer, storage, networking, hybrid connectivity, monitoring/logging, security and IAM. Contribute to the wider More ❯

and a proven track record, who ideally has some knowledge and experience of the commodity or financial trading sectors. Key Responsibilities: Full stack developer with around 8-10 years development experience, working in a agile development team to deliver robust enterprise-wide solutions utilising industry standard practices Design, develop, enhance and maintain applications using agreed coding standards and … quality targets. Ensure quality via code reviews and thorough unit testing. Liaise with immediate scrum team, other scrum/project teams, line manager and development lead to ensure accurate and complete delivery. Contribute to the development and implementation of software development best practices within the organisation. Writing clean and efficient code using relevant programming languages to implement … the designed features and functionality. Key Competencies & Skills: Knowledge of oil, wet bulk or energy trading and risk management business Software Development Methodologies: Understanding of Agile development practices and project management tools Communication Skills: Effective communication to collaborate with stakeholders, gather requirements, and explain technical concepts Problem-solving Skills: Ability to troubleshoot technical issues and identify creative solutions More ❯

healthcare platform for people across Europe. About the role: We are hiring a Full Stack Engineer to join the ZAVA Engineering team and increase the overall capacity of our Development function. While you will be part of our Engineering team, day-to-day, you will work in one of our cross-functional squads, working alongside engineers and product management … taking responsibility for the development and maintenance of ZAVA products and services. ZAVA Engineering is an agile, highly collaborative and passionate environment. You should be open to pairing, helping others and expanding your skills. We have three product development squads, each consisting of 4-6 people. With increased demand for our services, we need your help to join … from salary we offer atraining budget, 10% R&D and learning time and flexible working (working pattern can be discussed) Day-to-day, the work will encompass: Hands on development of ZAVA applications and architecture - You will be responsible for design, implementation and delivery of new applications, components and features including incremental updates to ZAVA's current components as More ❯

faster, smarter decisions using the most powerful tools in data science, AI, and cloud engineering. We're looking for a Principal AWS Architect with a strong background in .NET development to join our high-performing team. If youre a hands-on cloud expert who thrives on designing robust, scalable AWS architecturesand you bring deep understanding of API and … and Technology, with the opportunity to lead critical projects that drive real business impact. Architecture & Solution Design Lead the design and evolution of our AWS-based architecture for modern, API-first and data-centric applications Architect microservices and RESTful APIs with scalability, performance, and security at the core Define robust data pipelines using services like AWS S3, Lambda, Redshift … own technical documentation and delivery plans Leadership & Mentoring Provide technical leadership to engineering teams and mentor developers transitioning to cloud-native skills Support solution design and troubleshooting throughout the development lifecycle Manage and guide a Product Specialist on product packaging and delivery processes Qualifications What Youll Bring 3+ years of experience in solution architecture with a deep focus on More ❯

robust software engineering best practices-version control, CI/CD, code reviews, testing, and automation-to all aspects of the ML lifecycle. Troubleshoot and optimize ML workflows, from initial development through deployment and production support. Engage in cross-functional squads, participating in technical discussions, design reviews, and continuous improvement initiatives. Contribute to team growth by sharing knowledge and mentoring … with containerization and orchestration (Docker, Kubernetes or similar) for scalable model deployment. Practical experience with infrastructure-as-code (Terraform, CloudFormation, etc.). Understanding of concurrency, distributed systems, and scalable API development for ML-powered applications. Experience with version control (Git) and CI/CD pipelines. Strong problem-solving skills, attention to detail, and a collaborative, growth-focused mindset. More ❯