13 of 13 Contract API Development Jobs in London

controls work in London. Role Description: The person needs to have Python (ideally Quartz experience), and exposure to the reconciliation/controls model. The responsibilities will include business analysis, development, affinity with an agile way of working with stakeholders. And work with the development team, across the globe. Skills: Python, SQL, Quartz, React, HTML, CSS, Competencies: At least … years of Python and 1 year of React experience. Hands on experience in Quartz application development Hands on experience in Python , Rest API development and SQL Should have experience on Agile development Should be able to work as L3 support in a Devops environment UI design and development, ideally in React JS. MI and reporting … development using Tableau. Enterprise architecture, DevOps and Agile/Lean delivery techniques. Automated testing, instrumentation and data visualization techniques More ❯

API Develoiper - SC Cleared + 6 month initial contract + Fully remote + £650 to £690 per day + Inside IR35 Key Skills: + Strong background in API Development - ideally Axway + SC Clearance + WebMethods Responsibilities Designing, developing and deploying of Axway policies and containers using Axway Policy Studio v7.7 Working with DevOps toolset for develop … and maintain Automated Testing and Code Deployment Provide Assistance to Axway support team to resolve technical issues Administrating the Axway Environment, using Axway Policy Studio, Axway API Manager, Cassandra and API Gateway for Deployment of Axway Patches, monitor capacity, providing service improvements Liaise with customers to define project requirements, document and design solutions Knowledge of: SFTP HTTPS SSL More ❯

cloud platform (AWS) and on VMs hosted a managed on-prem hosting environment. The application is extant and Live. You are to be the senior developer leading the ongoing development and support of the application, including designing, developing, integrating and unit testing new features in response to Product Owner/Client priorities and fixing bugs/issues raised on … the Live application. You will have experience working with/developing microservices, containerised applications, TypeScript, React(TypeScript), GraphQL/Hasura, API development and integration, PostgreSQL, JavaScript, GoLang, and Python. You will be comfortable using the supporting tools for Agile product delivery such as JIRA (User Story/Defect/Task Management), Confluence (Documentation/Comms), and Slack (collaboration …/comms). Key Responsibilities Lead development of microservices and front-end components using Node.js (TypeScript) and React (TypeScript). Configure and extend Hasura GraphQL Engine, including permissions, computed fields, and API integrations. Design and implement PostgreSQL schemas, migrations, and triggers; ensure data integrity and performance. Integrate with Identity and Access Management (IdAM) systems. Ensure secure coding practices More ❯

Canary Wharf, London Working model: Hybrid - 3 days onsite We're looking for a talented Backend developer with strong Java and Node.js/TypeScript experience to join a dynamic development team within a leading financial services organisation. This role is ideal for someone who enjoys working across both backend development and infrastructure, collaborating with centralised DevOps teams, and … writing unit & integration tests. Strong problem-solving skills, with the ability to meet deadlines in collaborative environments. Nice-to-Have Skills Experience with Snowflake (cloud data warehousing). GraphQL API development experience. This is an urgent vacancy. If you are interested then please apply directly to the ad Randstad Technologies is acting as an Employment Business in relation More ❯

an experienced Senior Java Developer to join their dynamic technology team. This role offers the opportunity to work on high-impact financial applications, driving innovation and excellence in software development within a fast-paced and regulated environment. As a Senior Java Developer, you will play a key role in designing, developing, and maintaining enterprise-grade applications, while mentoring junior … code reviews and provide constructive feedback. Collaborate with cross-functional teams to define, design, and deliver new features . Troubleshoot and debug complex issues. Required Qualifications Professional Java software development experience. Strong understanding of object-oriented programming and design patterns . Hands-on experience with Spring and Hibernate frameworks. Solid experience with relational databases (MSSQL, Oracle). Proven experience … with RESTful API design and development . Strong background in unit, regression, and integration testing (JUnit). Experience with Maven/Gradle build tools. Proficiency with Git or similar version control systems. Excellent problem-solving and communication skills . Ability to work independently as well as collaboratively in a team. Desirable Skills Experience with cloud platforms (AWS, Azure More ❯

Data Scientist to provide oversight and hands-on expertise for the build of an AI Agent within an automated insurance workflow . The project involves prompt engineering of LLMs, API development and integration , and deploying solutions in line with a defined solution design. The successful contractor will also provide day-to-day oversight and mentorship to a junior … responsible for: Designing, building, and deploying AI Agent solutions within an insurance workflow. Developing and refining prompt engineering approaches for large language models (LLMs). Building, testing, and integrating API calls to meet solution design specifications. Deploying containerised applications in Azure (or other cloud environments) . Providing technical leadership, support, and oversight to a junior Data Scientist . Collaborating … deliver AI/ML solutions from design through to deployment. Proven ability to provide technical oversight and mentorship . Desirable: Experience within Financial Services/Insurance environments. Familiarity with API-first solution architectures . Prior exposure to containerisation (Azure Container Apps, Kubernetes, Docker). More ❯

in ambiguity, enjoys problem-solving, and can design scalable, high-performing systems that integrate legacy platforms with modern web services. Key Responsibilities Design and implement scalable database schemas and API interfaces to support large-scale user-generated content with a focus on security, performance, and developer experience. Architect clean, performant RESTful APIs, GraphQL solutions, and AI-powered features integrating … Customer Data Platforms (CDPs) and AI/ML capabilities (semantic search, RAG, vector embeddings, prompt engineering). Drive end-to-end project delivery - from scoping requirements to hands-on development in Python, Node.js, Go (with some PHP). Troubleshoot third-party integrations, resolve performance bottlenecks, and develop automated tests. Collaborate with cross-functional teams across multiple time zones, translating … complex business requirements into clear, actionable solutions. Skills & Experience 5+ years' backend API development experience with Python/Django, Node.js/NestJS, or Golang/Gin. Proven experience building APIs for enterprise-grade apps with complex integrations. Strong skills in system design and SQL data modeling for high-traffic applications (10k+ daily users). Hands-on experience with More ❯

. Proven ability to work independently and manage your own workload. Knowledge of the public sector, particularly within defence or government , is highly desirable. Experience with Power Automate and API development is a plus. If you're a skilled Blue Prism Developer with SC Clearance looking for a challenging new role, apply today. More ❯

Axway API Developer (SC Cleared) ?? 6 months contract Inside IR35 ?? £500 to £650 a day ??Remote Working (UK based) *Active SC Clearance is needed* 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 … 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 … and deployments. 6 months contract Inside IR35 - Remote Working - ?? £500 to £650 a day *Active SC Clearance is needed* 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 ❯

requirements and iterate quickly on solutions. Implement testing frameworks, version control, and data validation processes. Integrate with market data, storage systems, and reporting platforms. Required Skills 5+ years' Python development experience, ideally within trading, risk, or financial services. Strong background with Pandas, NumPy, and data science libraries . Hands-on experience with Flask or FastAPI for API development. More ❯

Axway API Developer +6 months + +£650 - £700 a day +Inside IR35 +Fully remote working +SC cleared role Responsibilities Designing, developing and deploying of Axway policies and containers using Axway Policy Studio v7.7 Working with DevOps toolset for develop and maintain Automated Testing and Code Deployment Provide Assistance to Axway support team to resolve technical issues Administrating the … Axway Environment, using Axway Policy Studio, Axway API Manager, Cassandra and API Gateway for Deployment of Axway Patches, monitor capacity, providing service improvements Liaise with customers to define project requirements, document and design solutions Your skills and experience SFTP HTTPS SSL/TLS oAuth JSON XML SOAP REST Mime Linux Scripting SC clearance is essential for this role. … If you'd like to discuss this Axway API Developer in more detail, please send your updated CV to (url removed) and I will get in touch. More ❯

Axway API Developer (SC Cleared) 6 months contract Inside IR35 £500 to £650 a day Remote Working (UK based) Active SC Clearance is needed 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 More ❯

month initial contract. *Inside IR35. *Fully remote. BluePrism Automation Developer - SC Cleared Looking for an experienced Automation developer. Importantly they: a. Must have SC clearance b. Must have BluePrism Development experience c. Ideally have experience in PowerAutomate/APIs development d. Ideally have mod/defence/gov experience e. Must be able to delivery independently, reporting to More ❯