126 to 150 of 258 API Development Jobs in England

Senior AI Engineer Manager/Associate Director | Capital Markets

Hiring Organisation
Datatech Analytics
Location
London, UK
Employment Type
Full-time
Applied AI engineering, ML engineering or software engineering background·Experience with LLMs, RAG, embeddings, prompt engineering or fine tuning·Exposure to LangChain, LangGraph, Agent Development Kit or similar agent frameworks·Experience with vector databases such as Pinecone, Chroma or similar·API development experience, ideally with FastAPI ...

Amazon Connect, Principal Consultant

Location
Greater London, England, United Kingdom
solutions for voice and digital channels (live chat, voice, written channels) Build and deploy serverless integrations using AWS Lambda (Python/Node.js), API Gateway, DynamoDB, Kinesis, and CloudFormation/Terraform connecting Amazon Connect to backend systems (Pega CRM, internal APIs) Implement infrastructure as code (Terraform/CloudFormation) for repeatable … reviews. Skills and experience you will bring: Bachelor's degree in Computer Science, Engineering, or equivalent professional experience 5+ years of hands-on software development or cloud engineering experience Demonstrable experience delivering multiple Amazon Connect implementations in enterprise environments, including design, integrations, routing, telephony, and production support. Proficiency ...

Cryptography Engineer

Hiring Organisation
WWT EMEA UK LIMITED
Location
Manchester, North West, United Kingdom
Employment Type
Contract
platform or infrastructure engineering background. Experience building and supporting enterprise-scale services. Strong automation and scripting skills (Python, PowerShell, Java, Go or similar). API development and systems integration experience. CI/CD, Infrastructure as Code and DevOps practices. Experience with cloud platforms (Azure, AWS or GCP). ...

Lead Platform Engineer

Location
Greater London, England, United Kingdom
data foundations of Apollo, Medialab’s marketing intelligence platform Shape how software is built, shipped and operated across the business Lead the design and development of core applications and internal tools Build and maintain production UIs using Python-centric stacks such as FastAPI, Jinja, HTMX and Tailwind Guide implementation … reliability and scalability of Apollo’s infrastructure and deployment pipelines Shape and maintain CI/CD processes, testing strategy and release workflows Improve local development, build and deployment workflows and developer productivity Make technical decisions for platform and application work in consultation with the Head of Data & Engineering Conduct ...

Software Engineer Specialist - Agentic Commerce

Location
Greater London, England, United Kingdom
drive continuous improvement. Collaborate with product managers, architects and engineering teams to define technical requirements, participate in software design reviews and contribute to API governance standards across the organization. What you'll bring Experience designing, developing, debugging and enhancing scalable software applications and APIs. Strong understanding … software development life cycles, engineering standards and modern development practices. Proficiency in solutions design, systems architecture and requirements definition. Knowledge of distributed systems, API development and integration patterns. Familiarity with financial services, payments or fintech technologies. Bachelor's degree in Computer Science, Computer Engineering ...

Head of Engineering

Hiring Organisation
WRK DIGITAL LTD
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
strategy for a portfolio of proprietary financial technology products. Lead and develop a growing international engineering organisation. Drive modern software engineering practices across product development, platform engineering and cloud services. Partner with Product teams to align engineering delivery with strategic objectives and business outcomes. Champion engineering excellence through automation … whilst maintaining agility. Build strong relationships across Product, Technology, Risk, Compliance and Executive Leadership teams. Provide technical leadership for strategic initiatives including platform modernisation, API development and operational resilience. Support the continued growth of a globally distributed engineering function and external technology partnerships. What We're Looking ...

Software Engineer

Location
Milton Keynes, England, United Kingdom
outcomes without dependency on external PMs Ensure outputs are production-ready, maintainable, and observable from day one Apply AI and automation tooling to accelerate development, testing, and operations Integrations & API Development Both independently and via 3rd Party Engineering team Integrate third-party services, for example payment processors …/KYB providers, fraud platforms, and banking APIs Build and maintain robust API layers including validation, orchestration, and workflow logic Implement secure, PCI-aware designs aligned with payments industry expectations Data & Infrastructure Design and maintain data pipelines and reporting structures using AWS native tooling Apply high availability and fault ...

.Net Core Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: .Net Core, Blockchain Challenge: Greenfield Blockchain platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 30 man flat Dev Team Pay: 80k, Bonus- training budget, Pension, Life/Health, Some Flex Working.NET Core Engineer Fintech BlockchainQuant Capital is urgently looking … .NET Core Developer to join our high profile client. Small iterative releases over large releases Automated testing over manual testing Development team testing culture over testing is a separate function Upfront team acceptance criteria over tests derived from the specificationOur client is a well known financial market data provider ...

C# Software Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: C#, SQL, MVC, WPF, .net coreChallenge: Greenfield Insurance platform, API development, industry specific challengesFirm: Well-known Insurance Trading Platform Vendor, City of London, 30 man flat global Dev TeamPay: 80k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingC# Software Engineer Quant Capital is urgently … C# Developer to work for our high profile Lloyds of London insurer. This is an opportunity for an individual with a strong software development background. The applicant will be responsible for design, development and maintenance of my clients main pricing analytical library in C#.This varied role is based ...

Lead Agentic AI Engineer

Location
City Of London, England, United Kingdom
seeking a highly skilled and innovative Lead Agentic AI Engineer to join our team and drive the design, development, and deployment of production‐grade generative AI and agentic solutions using Microsoft technologies. This role is ideal for a technically strong engineer who has hands‐on experience building AI solutions … Agent Framework Proficient in Python and production‐quality code practices Strong understanding of software engineering principles, architecture patterns, and delivery best practices Experience with API development using frameworks such as FastAPI, Flask, or Django Knowledge of Docker, containerised deployments, CI/CD, and cloud‐native delivery patterns What ...

Senior AWS DevOps Engineer

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
Bristol, Avon, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £500.00 per day
automating and maintaining cloud environments. Extensive experience building and optimising CI/CD pipelines, enabling automated build, test and deployment processes. Solid understanding of API development, integration and management, including RESTful services and microservice architectures. Commercial experience developing applications using .NET and/or JavaScript, with the ability ...

Senior AWS DevOps Engineer

Location
West of England, England, United Kingdom
automating and maintaining cloud environments. Extensive experience building and optimising CI/CD pipelines, enabling automated build, test and deployment processes. Solid understanding of API development, integration and management, including RESTful services and microservice architectures. Commercial experience developing applications using .NET and/or JavaScript, with the ability ...

Software Engineer

Hiring Organisation
Morgan McKinley
Location
St. Albans, Hertfordshire, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £75,000 per annum
commercial experience building production web applications using TypeScript and React, with a clear bias toward backend development. * Node.js Proficiency: Strong background in backend architecture, API development, and system logic. * Solid SQL Skills: Hands-on experience working with relational databases and query optimization. Desirable: * Background in Financial Services ...

Senior Software Engineer (Java)

Location
Manchester, England, United Kingdom
define and oversee the technical implementation of a client project We\'d love to talk to you if You have strong knowledge of API development using Java, including ORM storage You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best engineering ...

Senior Software Engineer (Java)

Location
Leeds, England, United Kingdom
define and oversee the technical implementation of a client project We\'d love to talk to you if You have strong knowledge of API development using Java, including ORM storage You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best engineering ...

Senior Software Engineer (Java)

Location
Greater London, England, United Kingdom
define and oversee the technical implementation of a client project We\'d love to talk to you if You have strong knowledge of API development using Java, including ORM storage You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best engineering ...

Software Engineer, Platform London, UK Apply →

Location
Greater London, England, United Kingdom
growth startups. Familiarity with LLMs, vector databases, embeddings, or other modern AI tooling (tinkering or production experience welcome). Proficiency with SQL and modern API development. Experience with Kubernetes, containerization, and microservice architectures. Experience working with at least one major cloud provider (AWS, GCP, or Azure). We believe ...

Senior Software Engineer

Hiring Organisation
Redline Group Ltd
Location
Egham, Surrey, South East, United Kingdom
Employment Type
Permanent
Salary
£90,000
demanding scientific and industrial applications. This is a hands-on position offering the chance to work across the full product lifecycle, from software development and system integration through to testing, production support and continuous product improvement within a multidisciplinary engineering environment. Key responsibilities for the Senior Software Engineer role … Develop SQL queries, reporting solutions and system integrations to support engineering and business processes. Provide technical leadership and guidance to junior engineers. Manage multiple development projects while ensuring high-quality delivery. Key skills required for the Senior Software Engineer role based in Surrey, onsite: Degree qualified in Software Engineering ...

Full Stack Engineer

Hiring Organisation
Response Informatics
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Application Development & Integration Full-stack software engineering expertise across Java, Python, .NET, JavaScript/TypeScript, Node.js, React, Angular, and modern web technologies. Deep experience in API development, Microservices, Event-Driven Architectures, Enterprise Integration, and Distributed Systems design. . click apply for full job details ...

Junior C# Software Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: C#, SQL, ASP.NET, WinformsChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Fintech Trading Platform Vendor, City of London, 30 man flat global Dev TeamPay: 50k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingJunior C# Software EngineerQuant Capital is urgently looking … They provide valuations and pricing of derivatives to most of the buy side. This is an opportunity for an individual with a junior software development background. The applicant will be responsible for design, development and maintenance of my clients main pricing analytical library in C# Full training will ...

AI Engineer — Prototyping & Emerging Tech

Location
Greater London, England, United Kingdom
working software at pace. What You’ll Do Rapidly building functional prototypes across a wide range of technology domains, from machine learning systems to API integrations Leveraging generative AI coding assistants and productivity tools to maximise development velocity Developing proof-of-concept applications that demonstrate the potential … Collaborating with the Research Graduate on technical feasibility assessments Contributing to technical presentations and documentation of prototype capabilities What You’ll Need Strong software development skills with proficiency in multiple programming languages (Python, JavaScript/TypeScript, etc.) Hands-on experience with machine learning frameworks (PyTorch, TensorFlow, or similar) Extensive ...

Principal Information Architect - Metadata Thought Leadership

Hiring Organisation
JP Morgan Chase
Location
London, UK
Employment Type
Full-time
Step into the role of a Principal Information Architect (Executive Director) at JPMorganChase and become a promoting force behind the development and adoption of cutting-edge, cloud-based technologies. Make metadata real, usable, and impactful in modern engineering. In this role, you'll sit at the intersection of Information … influence direction through thought leadership (not people management), partnering with stakeholders to drive standards and adoption. You will help ensure models and metadata support development practices and regulatory asks in a clear, implementable way. This could suit a strong Information Architect with metadata experience and an interest in software ...

Principal Information Architect - Metadata Thought Leadership

Hiring Organisation
Hackajob Ltd
Location
Bournemouth, Dorset, South West, United Kingdom
Employment Type
Permanent
this role. JOB DESCRIPTION Step into the role of a Principal Information Architect (Executive Director) at JPMorganChase and become a promoting force behind the development and adoption of cutting-edge, cloud-based technologies. Make metadata real, usable, and impactful in modern engineering. In this role … influence direction through thought leadership (not people management), partnering with stakeholders to drive standards and adoption. You will help ensure models and metadata support development practices and regulatory asks in a clear, implementable way. This could suit a strong Information Architect with metadata experience and an interest in software ...

SAP Integration Suite Developer- Tarmac

Location
Metropolitan Borough of Solihull, England, United Kingdom
Integration Suite developments across key business transformation programmes Designing and delivering robust integration solutions within a complex SAP environment Owning and driving Tarmac's API development and integration strategy Translating business requirements into scalable technical solutions Leading integration workshops and engaging with stakeholders across the business Managing … delivering both large-scale projects and smaller enhancement initiatives Ensuring best practice development standards and integration methodologies are followed What We're Looking For Essential Skills & Experience Extensive hands‐on experience with SAP Integration Suite Experience of working with SAP Advanced Event Mesh and event-based integrations Demonstrable experience ...

Java Developer (Market Data)

Location
City Of London, England, United Kingdom
develop systems to leverage and audit market/Reference data feeds. As a Senior Java Developer, you will undertake a mixture of server-side development in Java & SpringBoot, partnered with being a part of business facing initiatives to modernise and enhance their external facing application and ever evolving market … skills in the following: Server-side engineering in Java, and the building of SpringBoot microservices Experience working across Market/Reference Batch Data Modern development best practises including TDD and DevOps, being familiar with modifying CI/CD pipelines to maximise efficiency. REST API development and integration. ...