401 to 425 of 508 Permanent API Design Jobs

Senior Embedded UI Engineer, Streaming — Hybrid

Location
Manchester, England, United Kingdom
feature or project simply because that problem needs to be solved and shipped. But that individual must work together with different engineering teams, UI design, product teams, and business leadership to make things happen, which means that engineers succeed here because they can maintain that independent spirit and motivation … responsibilities of the role? Develop core features of the Roku Channel app and Roku OS. Work closely with Product Development, UI/UX design, Platform Services, and Release Management teams to contribute to our application development.Investigate, diagnose and resolve issues. What experience would help someone be successful in this ...

Software Engineer, Backend

Location
Greater London, England, United Kingdom
building an automated lab that lets AI agents run biology experiments. We're entering the era of agentic science where AI models can now design novel proteins, propose hypotheses, and iterate on experimental results. But they can't run the experiments themselves - that's still a manual, months-long … biotech today. Our automated lab is powered by a deep software + hardware stack: lab instruments worth millions of USD reverse-engineered into API-controllable hardware, dozens of devices orchestrated through complex workflows, full observability on everything that happens in the lab, processing pipelines for messy physical-world data ...

PHP / Laravel Developer

Hiring Organisation
Searchability
Location
Benfleet, Essex, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £45,000 per annum
tool, and the business wants developers who will help shape how AI is built into its workflows and systems. KEY RESPONSIBILITIES Design, build and maintain full stack web applications, predominantly in Laravel Build and optimise RESTful APIs between the front end and back end services Build responsive user interfaces … driven workflow improvements across the team ESSENTIAL EXPERIENCE Strong commercial PHP and Laravel JavaScript, HTML5 and CSS3, with Bootstrap and/or Tailwind RESTful API design, building and consuming MySQL Linux environments and the command line Git and GitHub A solid understanding of secure coding practices DESIRABLE ...

Security Engineer London

Location
Greater London, England, United Kingdom
development lifecycle. You'll help establish a robust security culture as we unlock Granola for the next 100x users. In this role, you will: Design and implement security features within the Granola app to protect user data and strengthen the product's security posture Leverage AI-assisted tooling … security posture Your background looks something like: Extensive experience building production software, with hands‐on exposure to security‐sensitive work (auth, data handling, API design, encryption or similar) and a genuine interest in going deeper into application security Comfortable with secure coding practices and at least ...

Software Developer C and Linux

Hiring Organisation
System Recruitment
Location
Lymington, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £64000/annum excellent benefits
immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: £60,000 - £65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

Software Developer C and Linux

Location
Pennington, England, United Kingdom
immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: 60,000 - 65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

Senior iOS Engineer

Location
Havant, England, United Kingdom
product that blends artificial intelligence, aviation expertise, and seamless mobile user experience while partnering closely with our in-house designers. You'll turn complex design concepts into seamless, shippable code and help steer the future of our digital flight tools. What You’ll Do: Develop scalable, high-performance features … other core Apple frameworks (specifically MapKit or similar mapping SDKs) Experience integrating REST APIs, with enough backend understanding to troubleshoot issues and contribute to API design Strong understanding of iOS build systems, provisioning, certificates, and App Store requirements Strong proficiency in Git Bonus Qualifications: Bachelor’s degree ...

Senior Engineering Manager, AI/ML-Driven Travel Platform

Location
Greater London, England, United Kingdom
Expedia Group in London seeks a Senior Engineering Manager to lead the Hotels.com Technology team. You will guide design and delivery across high-traffic services, own API design and data models, and mentor engineers in a fast-moving, high-quality environment. You will stay technically hands … contribute to code reviews, and champion safe AI/ML adoption while partnering with product, design, data, and platform teams to drive value for travelers and partners. #J-18808-Ljbffr ...

AWS Python Developer — Cloud, Django & Serverless (Hybrid)

Location
Nottingham, England, United Kingdom
engineer. The role is hybrid in Nottingham, with responsibilities spanning AWS services and Python-based backend development. The candidate should have extensive Django experience, API design expertise (REST/GraphQL), and a strong grasp of modern development practices including TDD and Agile methodologies. #J-18808-Ljbffr ...

Lead Java & Node.js Modernization Engineer

Location
Wembley, England, United Kingdom
five days a week. You will define standards, mentor developers, and drive cloud-native modernization initiatives across Java and Node.js services. You'll own API design, security-first practices, and the CI/CD pipeline, with hands-on work on Azure services, containerisation, and logging. This ...

Applied Value Engineer

Location
Greater London, England, United Kingdom
finance). Ability to speak the language of business leaders and connect operational bottlenecks to strategic AI solutions. Software/Data Engineering: Python proficiency, API design, SQL, data integration, and ML/AI libraries (PyTorch, TensorFlow, scikit-learn, XGBoost, Hugging Face Transformers). Agentic AI Systems: Hands ...

Senior Android Software Engineer - Grow

Hiring Organisation
Wise
Location
Greater London, United Kingdom
Employment Type
Full Time
modern app architectures like Unidirectional Data Flow, Dependency Injection, Structured Concurrency with Kotlin Coroutines, amongst others Desire to write testable code Understanding of REST API design Strong product mindset and passion for user experience, with a focus on prioritising work that addresses user needs and making data-driven ...

Senior Software Engineer II - Payin Platform - Backend (Java)

Hiring Organisation
Wise
Location
London, UK
Employment Type
Full-time
high-volume, high-leverage platform role: the systems you build are used by many teams across the company, so correctness, reliability, and thoughtful API design matter enormously. QualificationsWhat do you need?:5+ years of experience in Java, Kotlin, Python or Go Strong experience with Spring framework, relational databases ...

Senior Software Engineer, New Products

Hiring Organisation
Airwallex
Location
London, UK
Employment Type
Full-time
sound, you are a generalist at heart. You will do whatever it takes to get a product into the hands of global users—from API design to frontend polish. Minimum Qualifications6+ years of software engineering experience, with a deep foundation in backend architecture and a proven ability ...

Full Stack Engineer - AI & Cloud-Native (Azure)

Location
Greater London, England, United Kingdom
enabled capabilities. Ideal candidates have strong C#/.NET or Python skills, experience with React/Angular, and a solid background in secure, scalable API design. This role emphasizes collaboration with product stakeholders and cross-team delivery. #J-18808-Ljbffr ...

Principal Engineer (AWS & Java)

Hiring Organisation
London Stock Exchange Group
Location
London, UK
Employment Type
Full-time
changes, setting the standard for quality, performance, and maintainability. Provide hands‐on expertise in Java‐based systems, including concurrency, performance tuning, memory management, and API design. Non‐Functional Ownership & System PerformanceTake a leading role in defining, implementing, and validating non‐functional requirements, including system latency, throughput, scalability, and reliability. ...

Knowledge Graph Consultant

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
Graph ArchitectExperience: 10+ years (5+ years in Knowledge Graphs/Ontology Engineering)Role OverviewWe are looking for a Knowledge Graph Architect to lead the design and governance of enterprise knowledge graphs. This role will define the ontology, data model, and canonical vs. interpretive boundaries, enabling scalable, high-quality graph … prioritization, and skill developmentStakeholder CollaborationPartner with data, AI/ML, and business teamsTranslate requirements into semantic modelsProvide thought leadership on graph adoptionRequired SkillsNeo4j Schema Design (Cypher, property graph modeling)Ontology Engineering (OWL/RDF, Protégé)Graph RAG (LLM integration, retrieval strategies)API Design (REST/GraphQL)Preferred ...

Enterprise Integration Architect — API-First & Azure

Location
Greater London, England, United Kingdom
core integration and technology platform. You will shape and govern the Digital Backbone, connecting systems, data, and services enterprise-wide, while driving API-first principles and governance. The role focuses on architecture leadership, API design and governance, APIOps, and collaboration with stakeholders to align solutions with strategic ...

Principal Backend Engineer, Push

Location
Greater London, England, United Kingdom
integrations, data flows, and onchain settlement Translate product, regulatory, and operational requirements into a clear engineering roadmap, well-scoped projects, and sound technical decisions Design and build resilient services for on-ramp and off-ramp transaction lifecycles, including payment initiation, status tracking, settlement, exception handling, and customer notifications Lead … goals Strong backend programming skills. Production experience with Rust is highly desirable; deep experience with Go, Java, C++ can substitute Strong knowledge of API design, PostgreSQL or another relational database, messaging systems, and service-to-service integration patterns Experience in regulated fintech, payments, banking, digital assets, or another ...

Hybrid API Engineer - Cloud & Telecoms

Location
Belfast City District, Northern Ireland, United Kingdom
VanRath is recruiting on behalf of a Belfast-based telecommunications and technology organisation for an API Engineer to join their growing technology team. You will design, develop and maintain robust APIs and backend services to enable internal platforms, customer systems and third-party applications to communicate effectively. … will work closely with technical teams and stakeholders across the full development lifecycle, including API design, development, testing, deployment, monitoring #J-18808-Ljbffr ...

Senior Software Engineer, Subscriptions

Location
Cambridge, England, United Kingdom
What you’ll be doing Develop core features of the Roku Channel app and Roku OS. Work closely with Product Development, UI/UX design, Platform Services, and Release Management teams to contribute to our application development. Investigate, diagnose and resolve issues. We’re excited if you have Experience … Experience writing functional integration and unit tests. A good understanding of Core OS concepts like memory management and multi-threading. A good understanding of API design, considerations and trade-offs. Strong verbal and written communication skills (this role involves frequent communication with teams throughout Roku). Consumer electronics ...

Hybrid Mobile & Web Apps Developer - API & Cloud

Location
Greater London, England, United Kingdom
role combines web and mobile development to deliver secure, scalable digital products that align with a modern digital strategy. You will work across product, design and engineering teams to build customer-facing applications and integrations. The position involves the full SDLC, API design and delivery ...

Senior iOS Engineer II - Account Mobile

Hiring Organisation
Wise
Location
Greater London, United Kingdom
Employment Type
Full Time
Wise Account users. Collaboration is key to how we operate across the business in this role, and you will work alongside product, design, and analytics teams to create the best tools for our users, helping them manage their cross-currency needs with ease whilst shaping the Wise Account offering. … build consistent experiences across Wise’s native applications and the web and enable features with a customer centric focus. Collaborate closely with product, design (UI), analytics, and other teams across the company to deliver impactful experiences to Wise users as part of a cross-functional team. Take responsibility ...

Principal Embedded Software Engineer I

Location
Milton Keynes, England, United Kingdom
systems. As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack … experience in software testing and high-reliability qualification, as well as software engineering and software project management practices. The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills ...

Senior ASP.NET MVC Developer - FinTech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
work though. The Senior ASP.NET MVC Developer must have:3-5 years C#, ASP.NETMVC 4 +SQL ServerStrong background in Computer ScienceNHibernate or equivalent ORMREST api design experiencesome automation experience (continuous delivery/powershell/python)I am looking for a Senior ASP.NET Developer that has proven development experience … packages in the market, all inclusive. My client is based near Kingston in LondonASP.NET MVC, razor, c#, sql, mvc, .net, javascript, greenfield, , data, analytics, api, jquery, rest, powershell, python, continuous, delivery, integration ...