51 to 75 of 188 API Development Jobs

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment.The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes/… OpenShift, caching solutions, REST APIs, and high-throughput distributed systems. You will bring solid, practical experience in backend Java development and a keen interest in scalable distributed systems.ResponsibilitiesTechnical DeliveryDesign, develop, and maintain backend components in Java, with a focus on performance and resilience.Contribute hands-on to features across messaging ...

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment.The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes/… OpenShift, caching solutions, REST APIs, and high-throughput distributed systems. You will bring solid, practical experience in backend Java development and a keen interest in scalable distributed systems.ResponsibilitiesTechnical DeliveryDesign, develop, and maintain backend components in Java, with a focus on performance and resilience.Contribute hands-on to features across messaging ...

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment.The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes/… OpenShift, caching solutions, REST APIs, and high-throughput distributed systems. You will bring solid, practical experience in backend Java development and a keen interest in scalable distributed systems.ResponsibilitiesTechnical DeliveryDesign, develop, and maintain backend components in Java, with a focus on performance and resilience.Contribute hands-on to features across messaging ...

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment.The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes/… OpenShift, caching solutions, REST APIs, and high-throughput distributed systems. You will bring solid, practical experience in backend Java development and a keen interest in scalable distributed systems.ResponsibilitiesTechnical DeliveryDesign, develop, and maintain backend components in Java, with a focus on performance and resilience.Contribute hands-on to features across messaging ...

98742248336Posted: 2026-08-04Location: London, England, United KingdomCategory: Technology, Applications Development, ProfessionalCompany: CitiFX Client Platforms - Senior UI Software Engineer (Vice President)About the RoleWe are seeking a Senior Applications Developer to join a team delivering pricing solutions for the Foreign Exchange (FX) business. You will cover the full … software development lifecycle — analysis, design, implementation, and testing — while providing technical leadership to the team.Primary ResponsibilitiesDesign and develop high-quality trading GUIs providing compelling user experiences for internal and external tradersDefine and enforce interoperability standards across web applications using FDC3, and REST/WebSocket APIs. Experience with OpenFin ...

directly influence customer experience, operational efficiency and commercial performance. The Role You'll take ownership of the organisation's digital ecosystem including: WordPress website development and maintenance CRM administration (HubSpot) API development and third-party integrations Website security, hosting and performance Marketing technology stack Business reporting … dashboards AI-powered workflow automation Release management and version control Technical liaison with external development partners Working closely with the Head of IT and senior commercial stakeholders, you'll play a pivotal role in delivering new digital initiatives whilst ensuring the existing platform remains secure, scalable and high performing. ...

influence engineering strategy Work within a senior, AI-first engineering environment KEY POINTS Principal-level position with significant technical ownership Leading the design and development of a modern platform rebuild Strong focus on Node.js, TypeScript, React and cloud technologies Opportunity to shape engineering standards, architecture and AI adoption ABOUT … cloud infrastructure. Working closely with senior stakeholders, product teams and fellow engineers, you'll help establish engineering standards, drive adoption of AI-assisted development practices, and mentor other engineers as the team continues to grow. This role offers genuine autonomy, giving you the opportunity to influence technology decisions, engineering ...

candidates have led enhancements, maintenance, or improvements of existing systems. This position is especially suitable for those with hands-on experience in financial system development or financial IT consulting. (Ref: YC47581- Please include this when making any enquiries.) Main Responsibilities: Develop, maintain, and enhance financial systems (banking, securities, insurance … optimise databases such as SQL Server Propose and implement improvements or new functionalities for existing systems Coordinate with internal and external stakeholders Ideal Candidate: Development experience with C#.NET (3+ years preferred) Experience with SQL and database operations Knowledge of financial systems or financial operations (e.g., payments, settlements, reporting ...

Your new company We are looking for a proactive and enthusiastic Software Developer to join a growing development team. This is an exciting opportunity to work across a diverse technology landscape, supporting and enhancing business-critical applications while helping to deliver innovative, cloud-based solutions.You'll play … external clients. Working with modern Microsoft technologies, you'll contribute to projects spanning Azure cloud platforms, on-premise systems, APIs, integrations and AI-assisted development tools.This role offers the chance to collaborate with Product Managers, DevOps Engineers, QA Specialists and Business Stakeholders in an environment focused on continuous improvement ...

technical direction within your team Required Skills and Experience Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL … testing frameworks (e.g. Mocha, Jest, Cypress) We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. ...

Tech: C# 5, Visual Studiuo, AWS, Angular.JS, Bootstrap, Docker Challenge: Greenfield Financial platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 30 man flat Dev Team Pay: 70k, Bonus- training budget, Pension, Life/Health, Some Flex WorkingC# Lead Developer FintechQuant Capital … Lead Developer MUST have:• Degree ideally Comp Sci • Proven practical knowledge and understanding of Object Orientation, SOA, design patterns like IoC and the Agile development practices • Strong commercial experience of Microsoft development tools, including Visual Studio 2013 or higher and C# with .NET Framework 4.5.2 or higher • Demonstrable ...

impact National Security programmes Exposure to large-scale AWS cloud and DevOps environments Flexible and hybrid working arrangements Dedicated Career Manager and structured career development Access to extensive training and learning platforms Company bonus scheme 25 days annual leave with buy/sell options Private medical and dental insurance … continuous learning Desirable Experience AWS certifications such as Solutions Architect, Developer or DevOps Engineer Experience with Docker, Kubernetes, ECS or EKS Microservices and API development experience CI/CD tooling such as Jenkins, Bamboo, TeamCity or Bitbucket Automated testing practices and frameworks Understanding of Linux, networking and infrastructure ...

with your peers on technical direction within your team Desired Skills and Experience Core Software Engineering JavaScript frameworks (React, NextJS) TypeScript Python Java REST API development OpenAPI/Swagger Cloud & Infrastructure Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Data & Search ...

customers and colleagues. Experience Required 10-15+ years of experience in backend development. Basic/Essential Qualifications Proficiency in full-stack development with hands-on coding experience in Core Java, JPA/Hibernate, Spring framework, and basic caching concepts Knowledge of Spring ecosystem technologies including Spring Boot … creating rich, interactive React/Angularbased front-end applications. Experience building secure and scalable applications following enterprise design principles Solid coding practices for RESTful API development and consumption with understanding ofOpenAPI/Swagger specifications Understanding of API security protocols and authentication mechanisms (OAuth2, JWT) including TLS. Good ...

/2-3 days a week onsite Duration: 31/05/2027 Role Description: We require individuals with strong hands-on experience in API development and cloud-native solutions, particularly within the AWS ecosystem. Required Skills & Experience The ideal candidates should have proven experience in: AWS Lambda … JetStream events Amazon S3 File ingestion and event-based architectures Triggering Lambda functions from file arrival events Routing, transformation, and storage of output files API/Service Development Designing and building RESTful APIs and service endpoints Developing integrations to retrieve and update data across platforms Experience with enterprise ...

days Duration: 31/05/2027 Rate:402GBP/Day(Inside IR35) Role Description: We require individuals with strong hands-on experience in API development and cloud-native solutions, particularly within the AWS ecosystem. Required Skills & Experience The ideal candidates should have proven experience in: • AWS Lambda … File ingestion and event-based architectures o Triggering Lambda functions from file arrival events o Routing, transformation, and storage of output files • API/Service Development o Designing and building RESTful APIs and service endpoints o Developing integrations to retrieve and update data across platforms o Experience with ...

technical direction within your team Required Skills and Experience Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL … testing frameworks (e.g. Mocha, Jest, Cypress) We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. ...

technical direction within your team Required Skills and Experience Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL … testing frameworks (e.g. Mocha, Jest, Cypress) We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. ...

your peers on technical direction within your team Required experience Core Software Engineering such as: JavaScript frameworks (React, NextJS), TypeScript, Python or Java REST API development/OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. … working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. Benefits ...

Python Developer to join their data governance function, sitting within a technology risk and controls team. We are looking for candidates with strong Python development experience, alongside hands-on Collibra metadata management expertise. Experience in data modelling, governance, APIs, SQL and financial services would be particularly relevant. You will … attributes, domains and workflows. Develop high-quality Python solutions for data modelling and governance use cases, using Pydantic for schema definition, validation, serialisation and API-ready data structures. Build reusable Python libraries and automation patterns supporting data ingestion, governance workflows, data quality, lineage and reporting at enterprise scale. Design ...

Tier 1 Financial Services Company Development Lead (Kotlin/Java) Location: Sheffield (2 days per week in the office) Contract Type: Contract Working Pattern: Full Time About the Project The Developer Platforms, Standards and Controls team is building a platform that enables control owners and development teams … manage and view their compliance with a range of software development standards and controls. You will work across Kotlin and Java-based in-house web applications and APIs. We are hiring across 2-3 applications and proof-of-concepts, with allocation depending on experience and fit. The solutions include ...

effective unit testing practices to ensure proper code design, readability, and reliability.Assistant Vice President ExpectationsTo advise and influence decision making, contribute to policy development and take responsibility for operational effectiveness. Collaborate closely with other functions/business divisions.Lead a team performing complex tasks, using well developed professional knowledge … scalable, and customer-focused solutions. This is an opportunity to work on complex engineering challenges, contribute to modern software delivery practices, and influence the development of systems that drive business success.To be successful as a Software Engineer, you should have experience with:Strong proficiency in Java, C#, Python, JavaScript ...

effective unit testing practices to ensure proper code design, readability, and reliability.Assistant Vice President ExpectationsTo advise and influence decision making, contribute to policy development and take responsibility for operational effectiveness. Collaborate closely with other functions/business divisions.Lead a team performing complex tasks, using well developed professional knowledge … scalable, and customer-focused solutions. This is an opportunity to work on complex engineering challenges, contribute to modern software delivery practices, and influence the development of systems that drive business success.To be successful as a Software Engineer, you should have experience with:Strong proficiency in Java, C#, Python, JavaScript ...

your peers on technical direction within your team Required experience Core Software Engineering such as: JavaScript frameworks (React, NextJS), TypeScript, Python or Java REST API development/OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. … working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. Benefits ...

develop new functionality and make non-functional improvements to our products and services. Understand business requirements and how they translate into technical design and development projects and tasks. Participate in architectural and design discussions and diagnose and troubleshoot complex technical issues Work with stakeholders to progress and report … projects and tasks Building Voice Agents: Developing and maintaining our Go-based Voice Agent API Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providers Tool Creation: Developing "Tools" (Function Calling) that allow LLMs to interact with ...