1 to 25 of 100 API Design Jobs

12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. Open Stack/Salesforce & ReactNative - Salesforce, ReactNative (Web), Java, TDD, RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, SonarQube, Veracode, Jira, Confluence Open Stack BA - Salesforce, ReactNative (Web), Java … RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, Jira, Confluence API Developer - Java, TDD, RESTful API design & build, OAS/YAML, GitLab, CI/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply ...

possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

explore. The Role You'll take ownership of significant areas of the UI and front-end architecture, while also influencing backend design, API contracts, and long-term engineering direction. This role combines hands-on engineering with architectural responsibility and mentorship. Architecture Define technical direction for the frontend stack … Influence and help shape backend architecture Own API interfaces, contracts, and schemas Frontend Build fast, data-heavy UIs (dashboards, queues, timelines, case views) Design scalable component structures and UI patterns Integrate internal APIs and services Establish testing standards across UI and API layers Backend Design ...

site Due to the urgency and sensitivity of the work, active SC Clearance is mandatory . Responsibilities As an Application Architect, you will: Design and lead delivery of scalable, high-performance application architectures Define and apply modern application architecture patterns , including microservices, event-driven architectures, and SOA Support monolith … microservices transformation initiatives where required Architect cloud-native applications across AWS, Azure, and/or GCP Design API strategies , integration patterns, and messaging-based solutions Ensure strong alignment with application lifecycle management , CI/CD pipelines, and DevOps practices Work closely with platform and engineering teams to align ...

pressure; make frame-time and latency predictable across device classes Define and monitor SDK health metrics at scale (crashes, ANRs, error rates, perf envelopes) API design and developer experience Design clear, stable, Kotlin-first public APIs (versioned, well-documented, testable) Implement best practices for networking, auth … fixes and verify via dashboards Provide concise developer-facing change notes/migration snippets to the Solutions Engineer for release notes Roadmap contribution Co-design the next generation of the Android Captur SDK for release at the end of Q2 Champion performance budgets and device-class targets during planning ...

mentoring junior staff, ensuring high-quality deliverables, promoting best practices like TDD and BDD, and leading engineering practices across the SDLC. Required: Understanding of API design for mobile application with event driven architecture. Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0 … Secure API design. A strong understanding of technologies/areas: AWS, API Design, Automation testing. Note: This role doesn't offer visa sponsorship. If this feels like an exciting opportunity, feel free to apply or reach out directly at To From Record Yes No Always use these ...

Overview: We are seeking a technically proficient Data Analyst to join our IT Department. This role will focus on API design and systems integrations , playing a vital part in enabling data-driven decision-making and ensuring seamless data exchange across internal and external platforms. Key Responsibilities: Design … . Ensure data quality, compliance, and governance across all integrations. Support automation efforts by embedding APIs into existing workflows. Work closely with vendors to design solutions aligned with architectural standards and best practices. Key Skills & Experience: Proven experience in a Data Analyst or similar technical role. Strong hands ...

Role We’re hiring a Backend Engineer to build the core infrastructure behind Revax’s AI-native platform for professional services. You’ll design, optimise, and scale the systems that power multi-agent drafting, knowledge graphs, and auditable AI workflows used by accountants, tax advisors, and consultants at leading … graphs, and real-world enterprise workflows. What You’ll Do Build & own core backend systems · Build and optimise databases for complex, real-world data · Design and implement APIs using FastAPI for AI workflows and product features · Build and scale LangGraph-based multi-agent systems with checkpointing, retries, and observability ...

must be within a commutable distance to achieve this. Are you a seasoned Lead Developer ready to step up and take real ownership of API strategy, architecture, and delivery Do you thrive in environments where your voice matters, your decisions have impact, and your ability to drive efficiency … space that is scaling its digital product ecosystem. They are investing heavily in modernising and expanding their digital platforms, and they need a Lead API Developer who can steer backend/API development with both technical authority and clear communication.This isn’t just another coding role. This ...

Senior Java Developer (AWS, API) - Hybrid - Sussex Daily rate: £500 - £700 inside IR35 Duration: 6 - 12 months Hybrid: 2 days per week on site (mandatory Tues, Wed) Start: ASAP My new client is looking for 2 highly skilled Senior Java Engineers to join our engineering team. The ideal candidate … engineering discipline, independent problem-solving ability, and a commitment to building robust, scalable systems. You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. Key Responsibilities Design, develop, and maintain high-quality Java applications using ...

user stories, technical approaches, and delivery estimates. Contribute to and help shape roadmaps and delivery plans, balancing business priorities, technical constraints, and engineering effort. Design, develop, and maintain backend services and REST APIs using PHP (Laravel v10). Own and evolve Elasticsearch implementations, including index design, mappings, query … optimisation, aggregations, and performance tuning. Design and optimise MySQL schemas and queries for high-volume workloads, including indexing strategies and query performance analysis. Build and maintain data ingestion and processing pipelines from multiple internal and external sources. Design microservices and distributed systems supporting search, analytics, and alerting ...

supporting GST. What you'll do Work as a full-stack software engineer, coding, developing, and testing applications using Golang and Python, across service, API, and automation layers Lead the strategic development and implementation of the AI Operations platform, driving AI-enabled software solutions for alert ingestion, correlation, automation … operational workflows Design, build, and operate software and automated testing frameworks on AWS, including unit tests, integration tests, API tests, and environment-based validation Document and maintain every aspect of applications and software, including design specifications, configuration, deployment processes, and troubleshooting runbooks Train, mentor, and oversee development ...

supporting GST. What you'll do Work as a full-stack software engineer, coding, developing, and testing applications using Golang and Python, across service, API, and automation layers Lead the strategic development and implementation of the AI Operations platform, driving AI-enabled software solutions for alert ingestion, correlation, automation … operational workflows Design, build, and operate software and automated testing frameworks on AWS, including unit tests, integration tests, API tests, and environment-based validation Document and maintain every aspect of applications and software, including design specifications, configuration, deployment processes, and troubleshooting runbooks Train, mentor, and oversee development ...

supporting GST. What you'll do Work as a full-stack software engineer, coding, developing, and testing applications using Golang and Python, across service, API, and automation layers Lead the strategic development and implementation of the AI Operations platform, driving AI-enabled software solutions for alert ingestion, correlation, automation … operational workflows Design, build, and operate software and automated testing frameworks on AWS, including unit tests, integration tests, API tests, and environment-based validation Document and maintain every aspect of applications and software, including design specifications, configuration, deployment processes, and troubleshooting runbooks Train, mentor, and oversee development ...

supporting GST. What you'll do Work as a full-stack software engineer, coding, developing, and testing applications using Golang and Python, across service, API, and automation layers Lead the strategic development and implementation of the AI Operations platform, driving AI-enabled software solutions for alert ingestion, correlation, automation … operational workflows Design, build, and operate software and automated testing frameworks on AWS, including unit tests, integration tests, API tests, and environment-based validation Document and maintain every aspect of applications and software, including design specifications, configuration, deployment processes, and troubleshooting runbooks Train, mentor, and oversee development ...

Ireland providing specialist services to a wide range of blue-chip clients. The role We are seeking technical polyglots who enjoy both technical architectural design, hands-on coding and peer reviews, though also like the idea of the equally important social/client-facing aspect of the role. … development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority (TDA) for delivery of technical stories and produce technical documentation artefacts to support the delivery process. Main Responsibilities Duties will include: The design ...

participate in redesigning our core products, working across greenfield and legacy solutions. Your expertise will influence every stage of the product lifecycle—from initial design to deployment, ensuring we meet the evolving needs of our customers with innovative, reliable software. Required Skills: Strong experience in C# and .Net Core … development Proficiency with Web API design and development Solid understanding of REST principles and SOLID design patterns Hands-on experience with Docker, Kubernetes, and cloud platforms such as AWS or Azure Familiarity with Typescript and React (desirable) Knowledge of SQL and NoSQL databases Experience with TDD, Agile ...

agile squad, responsible for the end-to-end delivery of scalable web applications. What You’ll Do (Responsibilities) End-to-End Development: Design and develop high-volume, low-latency applications for mission-critical systems. Back-End Excellence: Write clean, maintainable code using Java and the Spring Boot ecosystem. Front … Innovation: Build responsive, user-friendly UI components using React, Angular, or Vue.js . Database Management: Design and optimize schemas for relational ( PostgreSQL/MySQL ) and NoSQL databases. API Design: Build and consume secure RESTful APIs to integrate with internal and third-party services. Collaboration: Participate in code ...

automation, and continuous improvement-and they're looking for someone who shares that mindset. Key responsibilities as the Senior Back-End Software Engineer are: Design and develop backend services using Node.js and TypeScript , deployed in a cloud-native environment. Build and maintain GraphQL and REST APIs to support … team. Skills & Experience needed: Essential: Strong experience with Node.js and TypeScript Proven background in microservices architecture Solid understanding of GraphQL and RESTful API design Experience with SQL and NoSQL databases Familiarity with CI/CD, automated testing, and modern development workflows Desirable: Experience with Azure or other cloud ...

technical leadership role where youll set direction, define standards, and ensure high-quality delivery. Youll work closely with clients and cross-disciplinary teams to design innovative cloud solutions, while mentoring colleagues and sharing best practices across the organisation. What Youll Be Working On: Design, deploy, and maintain cloud … such as Cloud Functions, Cloud Run, GKE, Compute Engine, VPCs, Cloud Spanner, Cloud SQL, and BigQuery Strong knowledge of microservices, event-driven architectures, and API design Experience with CI/CD pipelines, infrastructure as code (Terraform), and automated testing Competence in scripting or programming (Python, Bash, Node.js) Familiarity ...

delivering scalable, high-performance applications. This role requires deep technical expertise, strong architectural skills, and the ability to collaborate effectively across teams. Key Responsibilities Design, develop, and maintain robust full-stack applications and services. Architect and implement scalable cloud-based solutions leveraging AWS . Optimise system performance, reliability … Node.js . Proven experience with AWS and cloud-based architectures. Full-stack proficiency with modern frameworks (e.g., React). Solid understanding of software architecture, design principles, and microservices. Experience with serverless architecture, containers (Docker, Kubernetes), and CI/CD pipelines. Excellent problem-solving, debugging, and communication skills. Preferred Qualifications ...

alignment between technical and business leaders, balancing strategic direction with delivery needs. Represent architecture in governance forums, supporting prioritization, risk discussions, and assurance reviews. Design, Analysis & Governance Create high-quality architectural artefacts including diagrams, data flows, integrations, future-state designs, and migration pathways. Evaluate technology options and assess impacts … digital or enterprise environments. Strong software engineering foundation, with practical knowledge of modern application architectures (e.g., microservices, APIs, distributed systems). Proven ability to design and document architectures using visual modelling techniques such as C4, UML, and data flow diagrams. Hands-on experience with at least one major cloud ...

modern CMS ecosystem. Key Responsibilities: Architect, build, and maintain full-stack applications using TypeScript, React, and Node.js. Provide technical direction by contributing to design decisions, architectural options, and solution trade-offs. Lead improvements to automated testing practices, ensuring robust unit, integration, and E2E test coverage. Drive enhancements … Node.js, React, and Next.js. Professional experience with cloud platforms (AWS preferred). Experience with automated testing and CI/CD pipelines. Understanding of RESTful API design, microservices, and modern web application architecture. Experience with mentoring junior and mid-level engineers. Excellent collaboration, problem-solving, and communication skills, with ...

Onsera's core product platforms, from wearables integration and health data pipelines to member payments and AI workflows. As a player-coach, you'll design and implement full-stack solutions while setting engineering standards and help build and mentor our engineering team as we scale. This role offers … opportunity to shape API-first architectures, lead complex integrations with healthcare partners and SaaS platforms, and transition into engineering leadership as the organization scales. What You'll Do Own technical delivery of multiple Onsera products from design through production and iteration Design and implement full-stack solutions ...

core stack includes: The Engine: Expert-level C# and .NET Core mastery. Architecture: Deep understanding of SOA (Service Oriented Architecture) and complex Object-Oriented design patterns. System Dynamics: Specialized knowledge of concurrency, asynchrony, and parallelism —essential for real-time transactional processing. Data & Web: High proficiency in SQL Server … API design, and modern front-end fundamentals (HTML/CSS/JS). Reliability: A strict practitioner of TDD (Test Driven Development) and robust CI/CD processes. Desired Innovations Our client is actively modernizing. Exposure to the following is highly valued: Cloud & Orchestration: Azure ecosystems, Docker ...