51 to 75 of 151 API Design Jobs in England

work: billing, payments, subscriber management, RADIUS‐based network authentication, and integrations with ISP billing systems and mobile money providers. We are replacing legacy, non‐API systems with a modern API platform, and real money is already flowing through the system. This is a small, high‐intensity engineering team … when they hit technical walls. You will not manage people. You will build systems. What you will own Payments domain: SasaPay collections integration (C2B API, STK push, IPN handling), revenue split engine (per‐partner, per‐BNG percentage logic), ChoiceBank treasury operations (withdrawals, internal transfers, OTP flows), and the payment ...

core mission capabilities. You ll work as part of empowered, autonomous DevOps teams with regular contact with end-users to flexibly and efficiently understand, design, develop, deploy and maintain applications and services on AWS. You ll be encouraged to identify new ways of solving problems and get to work … help you with them AWS Certification at Associate level eg Solution Architect, Developer or DevOps Expertise in microservices and API design Docker, and container runtime platforms such as Kubernetes, EKS, ECS etc Strong understand of operational concepts on AWS, particularly monitoring and observability, FinOps Utilising CI/ ...

Solirius Reply, part of the Reply Group, is a technology consultancy and digital transformation partner that helps organisations solve complex challenges through strategy, design, engineering, and delivery. We work closely with our clients to deliver secure, accessible, user-focused services that evolve with their needs. By combining deep technical … expertise with people-centred design, we create solutions that deliver meaningful, lasting impact. Our consultants partner directly with client teams, embedding into organisations to understand their goals, challenges, and users. This collaborative approach enables us to deliver tailored solutions that drive measurable outcomes across public and private sectors. Past ...

that drive business transformation. Working closely with stakeholders, engineering teams and platform specialists, you'll translate complex business needs into innovative technical solutions, championing API-led and event-driven architecture principles. You'll also help drive the adoption of emerging AI capabilities, ensuring AI-powered solutions are implemented … will: Partner with business stakeholders, solution architects and delivery teams to understand business needs and translate them into innovative, future-ready solution designs. Design, shape and govern scalable, secure and highly available solutions using Microsoft Azure technologies, ensuring they meet both current and future business demands. Drive the adoption ...

role is hybrid working (1-2 days on site per week), with preferred location of Sheffield but London may also be possible. Key Responsibilities Design, develop, and maintain scalable software solutions across frontend and backend services. Contribute to the delivery of key product and project milestones as part … across both frontend and backend technologies. Proven experience with modern frontend frameworks such as React, Vue, Angular, or similar. Strong backend development skills, including API design and service-based architecture. Proficiency in one or more backend languages such as Python, Node.js, Java, or equivalent. Hands-on experience with ...

foundational systems that power our embedded finance platform at global scale. The team owns multi‐tenant infrastructure, drives cross‐domain product capabilities, and helps design technical solutions for enterprise customers. Key areas of ownership include: Embedded Finance Platform: Build and maintain the infrastructure powering customers like Rippling, Navan, Qantas … career development. Set technical direction for scalable, reliable backend systems and partner with senior engineers on architecture and design. Ensure high standards for system design, code quality, testing, and operational excellence. Drive improvements across reliability, observability, security, and developer productivity. Work cross‐functionally with product, design, compliance, sales ...

Solutions Architect - INSIDE IR35 - HYBRID Solutions Architect Ready to shape enterprise integration at scale? We're looking for an experienced Solutions Architect to design secure, scalable, and innovative integration solutions across cloud, on-premises, and hybrid environments. You'll lead API strategy, middleware architecture, event-driven integration … cloud connectivity while working with cutting-edge technologies including Azure, AWS, Kafka, MuleSoft, Boomi, and API Management platforms. If you're passionate about solving complex integration challenges, influencing enterprise architecture, and driving digital transformation, we'd love to hear from you. Required Skills and Experience Strong experience in enterprise ...

senior, individual engineers have outsized impact which is exactly why ownership matters so much in this role. What you'll own Backend & architecture. Design, build and evolve the services, APIs, data pipelines and scoring/recommendation logic at the core of the product owning architecture, infrastructure, schema design … looking for Must-haves Strong full-stack/backend engineering. 5+ years of professional software development (stack flexible) with strong server-side fundamentals API design, data modelling/schema design, authentication patterns and clean service architecture. Comfortable across SQL databases and a modern backend stack (e.g. Python ...

skilled Sr. Delivery Consultant to join our team at Amazon Web Services (AWS). In this role, you will work closely with customers to design, implement, and manage AWS solutions that meet their technical requirements and business objectives. You will be a key player in driving customer success throughout … here: https://www.gov.uk/government/publications/united-kingdom-security-vetting-clearance-levels Basic Qualifications Experience as a technical specialist in design and architecture. Experience in cloud-based solution (AWS or equivalent), system, network, and operating system. Experience in external or internal customer-facing, complex ...

regulatory, and technical domains—areas where no single existing team has full coverage, like tax systems, compliance‐driven flows, or monetization tools. Solutions Architecture: Design integrations for enterprise prospects by translating their business requirements into technical solutions. Your architectural decisions directly influence deal outcomes—from enabling multi‐million dollar … software engineering experience in Java/Spring Boot Excel at making the right level of abstraction—balancing flexibility and simplicity in system/component design Demonstrate clean communication across technical and non‐technical stakeholders Make pragmatic decisions on when to optimize for performance vs. velocity based on business impact ...

Boomi AtomSphere, connecting multiple enterprise platforms across cloud and on-premise environments. This is a hands-on technical position requiring strong Boomi development experience, API integration knowledge and the ability to support complex integration landscapes. Key Responsibilities: Design and develop scalable integration solutions using Dell Boomi AtomSphere, including … secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management, including gateway configuration, throttling and developer portal management Develop and maintain CI/CD pipelines using Git, Azure DevOps or Jenkins, supporting automated ...

applications, platforms and deployment processes. This is not a traditional vulnerability management role, it is a hands-on Application Security role centred on secure design, CI/CD security, cloud-native technologies, Kubernetes, API security, code analysis, security-as-code and supporting development teams to build secure applications. … controls throughout CI/CD pipelines. Strengthening the security of GitHub Actions and comparable continuous integration and deployment platforms. Providing technical guidance on secure API design and protecting externally accessible systems. Supporting the security of Azure cloud infrastructure, including Azure Kubernetes Service (AKS). Assisting with the protection ...

enjoys building from the ground up. The salary range is up to £120,000 depending on experience and fit. Key Responsibilities Own the design, development, and operation of the core backend services that power our consumer-facing products and internal operational tooling. Build scalable, low-latency systems that … notification preferences, audience segmentation, and delivery tracking. Integrate with third-party data providers and external services, ensuring robust failure handling, observability, and system resilience. Design and support secure internal tooling APIs, including role-based access controls, audit trails, change history, and safe administrative workflows. Build and operate event-driven ...

regulatory, and technical domains—areas where no single existing team has full coverage, like tax systems, compliance-driven flows, or monetization tools. Solutions Architecture: Design integrations for enterprise prospects by translating their business requirements into technical solutions. Your architectural decisions directly influence deal outcomes—from enabling multi-million dollar … 8+ for Staff) in Java/Spring Boot Excel at making the right level of abstraction—balancing flexibility and simplicity in system/component design Demonstrate clean communication across technical and non-technical stakeholders Make pragmatic decisions on when to optimize for performance vs. velocity based on business impact ...

lead a team of elite engineers who embed directly with Fortune 500 customers to ship deeply integrated AI agents—owning everything from agent design and evaluation to the backend services, data systems, and cloud infrastructure that make them production‐ready. You'll partner closely with our Forward Deployed … volume for senior engineering roles. Hands‐on fluency with the full AI stack. Deep familiarity with LLMs and agent systems, evaluation frameworks, backend and API design (Python or TypeScript), data systems (PostgreSQL, DynamoDB, MongoDB, or similar), and cloud infrastructure (AWS, Azure, or GCP) including Kubernetes, Docker ...

already operating at 100% whole slide image scanning capacity in Geneva and Lausanne. Core Responsibilities 1. Core Agentic Architecture & Retrospective Extraction LLM Extraction Agents: Design, build, and maintain production-grade LLM-based extraction pipelines to automatically parse years of unstructured PDF pathology reports. Structured Parsing: Programmatically extract clinical entities … biomarker statuses from raw, free-text documents. Framework Selection: Evaluate and integrate specialized agentic frameworks and orchestration tooling (e.g., LangChain, LlamaIndex, or direct LLM API implementations) based on measurable extraction accuracy against real-world clinical text, rather than what is fashionable. Confidence Scoring & Human‐Review Loops: Build programmatic confidence ...

product suites. Translate business and technical requirements into scalable, resilient and cost‐effective solutions, ensuring alignment with wider enterprise architecture. Provide technical leadership through design reviews, code reviews and architectural governance, supporting high‐quality, secure and maintainable software delivery. Lead the evolution and adoption of engineering practices, principles … designing scalable, resilient and secure technical architectures, with the ability to produce both high‐level and detailed solution designs. Extensive knowledge of integration and API design patterns, including REST APIs, event‐driven architectures, messaging, microservices and orchestration. Expert understanding of modern software engineering principles and architecture patterns, including ...

product suites. Translate business and technical requirements into scalable, resilient and cost‐effective solutions, ensuring alignment with wider enterprise architecture. Provide technical leadership through design reviews, code reviews and architectural governance, supporting high‐quality, secure and maintainable software delivery. Lead the evolution and adoption of engineering practices, principles … designing scalable, resilient and secure technical architectures, with the ability to produce both high‐level and detailed solution designs. Extensive knowledge of integration and API design patterns, including REST APIs, event‐driven architectures, messaging, microservices and orchestration. Expert understanding of modern software engineering principles and architecture patterns, including ...

product suites. Translate business and technical requirements into scalable, resilient and cost-effective solutions, ensuring alignment with wider enterprise architecture. Provide technical leadership through design reviews, code reviews and architectural governance, supporting high-quality, secure and maintainable software delivery. Lead the evolution and adoption of engineering practices, principles … designing scalable, resilient and secure technical architectures, with the ability to produce both high-level and detailed solution designs. Extensive knowledge of integration and API design patterns, including REST APIs, event-driven architectures, messaging, microservices and orchestration. Expert understanding of modern software engineering principles and architecture patterns, including ...

advantageous Prior senior level/architecture experience Good communication skills Used to working in an agile environment Desirable Skills Blazor (or happy to learn) API design experience (preferably .NET Web API) Elastic Search (with Kibana dashboards) Experience working with third-party API’s JIRA/Agile ...

looking for: • Hands-on experience running real production workloads on AWS — not just deploying to it • Strong Postgres/SQL skills: schema design, query tuning, migrations • Solid API design chops: clear contracts, versioning, backwards compatibility • Python-first mindset (FastAPI or similar) • Redis experience: caching patterns, invalidation ...

Responsibilities Contribute across the full SDLC, partnering with Engineering, DevOps, and Product Turn business requirements into robust, secure technical solutions Design and build scalable, high-performing applications and services Write high-quality, maintainable code with strong testing and automation Lead investigations into complex technical issues and ensure system stability … Champion engineering best practices and continuous improvement Shape system and API design using modern architectural principles Communicate clearly with cross-functional teams Mentor junior engineers and support knowledge-sharing Contribute to technical discovery (spikes) and document findings Support CI/CD, IaC, and cloud environments (GitHub Actions, Terraform ...

influence technical strategy Work within a senior, AI-first engineering environment KEY POINTS Senior technical leadership role with significant architectural 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 … role where you'll help shape the future of a modern, large-scale platform whilst remaining hands-on with development. You'll lead the design and delivery of scalable backend services, APIs, integrations and data flows, whilst providing architectural guidance across the wider engineering team. Although the role ...

that sit between our LLM providers and our customer-facing products, focusing on reliability, latency, and cost efficiency at scale. What You'll Do: Design and maintain APIs serving LLM-powered features (chat, search, agentic workflows) to 500k+ monthly active users Build and optimise RAG pipelines, including chunking strategies … performance for both relational (Postgres) and vector (pgvector/Pinecone) workloads Collaborate with ML engineers on model-serving infrastructure and prompt-caching strategies Drive API versioning and backwards compatibility as the product iterates quickly Core Tech Stack: Languages: Python (FastAPI), Go, TypeScript (Node.js) Databases: PostgreSQL, Redis, Pinecone/pgvector ...

Type Full-time Experience Level 5+ years Security Clearance SC/DV Cleared Role Overview We are seeking a Senior Oracle Integration Consultant to design, build, and manage integrations across Oracle SaaS modules (ERP, HCM, SCM) using Oracle Integration Cloud (OIC). The ideal candidate combines strong technical integration … business requirements with technical delivery. Working knowledge of Oracle PaaS and IaaS is essential to support end‐to‐end cloud integration architectures. Key Responsibilities Design, develop, and deploy integrations across Oracle Fusion ERP, HCM, and SCM modules using Oracle Integration Cloud (OIC). Build and maintain integrations using ...