API Design Jobs in the South East

19 of 19 API Design Jobs in the South East

Solution Architect - Client-facing

London, South East, England, United Kingdom
Method Resourcing
Solution Architect - Client-facing | TypeScript | API Design | Hybrid (2 Days Onsite in Central London) | £105,000-£110,000 + 15% Discretionary Bonus Method Resourcing is thrilled to be partnering with a global leader in the travel industry who are hiring a Client-facing Solution Architect to join a high-performing architectural team. This is a brand-new role … role that balances strong software knowledge with excellent stakeholder management and communication. What you'll be doing: Lead client-facing solution architecture discussions - mapping technical needs to platform capabilities Design and communicate system architecture diagrams, data flows, and API integrations Build prototypes and proof-of-concepts to test ideas and drive alignment Translate complex requirements into clear deliverables … for both technical and non-technical audiences Collaborate closely with internal engineering and product teams to ensure smooth handover and scalable design Skills and experience we are looking for: Strong software development background (ideally TypeScript and Node) Hands-on experience in solution architecture and API design Ability to build and communicate technical diagrams, flows, and documentation Strong More ❯
Employment Type: Full-Time
Salary: £105,000 - £110,000 per annum
Posted:

Senior AI Engineer

London, South East, England, United Kingdom
Chambers and Partners
AI Engineer to build and scale cutting-edge AI capabilities that drive smarter decisions and greater efficiency across Chambers and Partners. In this brand new role, role, you’ll design and implement intelligent systems that enhance how we use data, streamline operations, and power innovation across our digital platforms. You’ll play a key role in establishing the technical … deliver value to our users. Main Duties and Responsibilities Data & Retrieval Build robust ingestion pipelines for PDFs/Word/Excel/Audio/JSON and semi-structured sources. Design RAG systems: chunking strategies, document schemas, metadata, hybrid/dense retrieval, re-ranking, and grounding. Manage vector/keyword indexes (e.g., Azure AI Search, pgvector, Pinecone/Weaviate). … NLP, information retrieval, and recommendation systems that enhance Chambers and Partners’ research and product offerings, including document understanding, automatic summarisation, topic modelling, semantic search, entity recognition, and relationship extraction. Design and implement intelligent tagging and metadata enrichment frameworks to categorize and organize legal and market data, improving search, discoverability, and insight accuracy. LLM & Machine Learning Application Engineering Design More ❯
Employment Type: Full-Time
Salary: Competitive salary
Posted:

Data Analyst - Integrations

London, South East, England, United Kingdom
Precise Placements
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, document, and maintain APIs to facilitate secure and efficient data … BI, Azure Foundry, and Fabric . 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-on experience with RESTful API design , documentation (Swagger/OpenAPI), and testing tools (e.g. Postman). Proficiency in SQL and scripting languages such as Python or R . Solid understanding of data modelling, ETL processes , and system integration . Experience working with Azure and Microsoft data tools including Power BI , Azure Foundry , and Fabric . Excellent communication skills and ability to engage effectively More ❯
Employment Type: Full-Time
Salary: £60,000 - £65,000 per annum
Posted:

AWS DevOps Engineer

London, South East, England, United Kingdom
Randstad Technologies
responsibilities Build, deploy, and monitor solutions using AWS services (Lambda, APIGateway, CloudWatch, ECS, ECR, Dynamo, S3 etc.) Integrate APIs into CI/CD pipelines using Azure DevOps, Github workflows Design, deploy, and manage applications tailored to business needs, whilecustomizing platforms and overseeing the full API lifecycle using Apigee Edge and X.Drive API strategy execution, provide technical support … integrations and documentation. Key skills for this role Security & Compliance:o Implement and enforce security best practices across the platform, includingsecure coding, dependency management, and vulnerability scanning.o Ensure API security and access control using OAuth, API keys, JWT, and othermechanisms.o Monitor and remediate security vulnerabilities in third-party packages andlibraries.o Collaborate with security teams to align platform … Automate upgrade workflows using CI/CD pipelines and infrastructure-as-code tools. Infrastructure & DevOps:o Hands-on experience with Terraform and Ansible for infrastructureprovisioning and configuration management.o Design and manage Azure DevOps CI/CD pipelines for secure and efficientsoftware delivery.o Deploy microservices using AWS ECS, ECR, and Fargate, ensuring secure andscalable architecture. Development & Containerization:o More ❯
Employment Type: Full-Time
Salary: £55,000 - £60,000 per annum
Posted:

AWS DevOps Engineer

London, South East, England, United Kingdom
Randstad Technologies
deployment. Manage infrastructure, monitor performance,and collaborate across teams to maintain scalable, secure, and resilient systems. Key role and responsibilities Build, deploy, and monitor solutions using AWS services (Lambda, API Gateway, CloudWatch, ECS, ECR, Dynamo, S3 etc.) Integrate APIs into CI/CD pipelines using Azure DevOps, Github workflows Design, deploy, and manage applications tailored to business needs … while customizing platforms and overseeing the full API lifecycle using Apigee Edge and X. Drive API strategy execution, provide technical support, and generate insights through analytics to enhance integrations and documentation. Key skills for this role Hands-on experience with infrastructure-as-code tools (e.g. Terraform, Ansible) is a must Proficiency with AWS cloud tools and architecture, including … based web applications Strong analytical and problem-solving skills Good knowledge of the Apigee platform or any APIM platform and its components Ability to generate custom analytics reports for API consumption and errors Implementation of API security and access control (OAuth, API keys, JWT, etc.) Familiarity with API design patterns, best practices, and performance optimization More ❯
Employment Type: Full-Time
Salary: £55,000 - £60,000 per annum
Posted:

AWS Integration Architect

South East, United Kingdom
Anson Mccade
ll join a high-performing cloud team supporting enterprise clients in designing and delivering secure, scalable integrations on AWS. You'll work across modern architectures, leveraging containerisation, event-driven design, and API-first principles to solve complex integration challenges. Key Responsibilities Architect and implement AWS integrations using EKS (Kubernetes) and Lambda . Design and manage secure REST …/GraphQL APIs via API Gateway , including authentication, throttling, and schema validation. Integrate with enterprise platforms such as SAP, Salesforce, Oracle ERP for both batch and real-time data flows. Build event-driven messaging architectures using SQS, SNS , and Step Functions . Apply best practices in Kubernetes and API security , including TLS, KMS, RBAC , and service-to-service … X-Ray , and container-level logging and alerting tools. What We're Looking For 5+ years of AWS integration experience, including secure deployments on Lambda and EKS . Strong API design and security expertise (OpenAPI, OAuth2, JWT). Proven integration experience with SAP, Salesforce, Oracle . Proficiency in Flask, FastAPI , or similar frameworks in cloud-native environments. Experience More ❯
Employment Type: Permanent
Posted:

Software Engineer

Milton Keynes, England, United Kingdom
Hybrid/Remote Options
develop
We’re Looking For A strong communicator and a true team player, you'll bring experience in most of the following: Tech Stack C# .NET Core React & TypeScript Web API Docker/Kubernetes AWS or Azure Git SQL/NoSQL Ways of Working Agile/Scrum TDD, CI/CD, DevOps SOLID principles RESTful API design What More ❯
Posted:

Software Engineer

Milton Keynes, England, United Kingdom
develop
SDLC. What We’re Looking For A strong communicator and a true team player, you'll bring experience in most of the following: Tech Stack C# .NET Core Web API Docker/Kubernetes AWS or Azure Git SQL/NoSQL Ways of Working Agile/Scrum TDD, CI/CD, DevOps SOLID principles RESTful API design What More ❯
Posted:

Solutions Architect

St. Albans, Hertfordshire, South East, United Kingdom
Method-Resourcing
Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role … We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯
Employment Type: Permanent
Salary: £95,000
Posted:

.Net developer

London, South East, England, United Kingdom
eTeam Inc
every year of education • At least 8-10 years of experience with Information Technology Key Responsibilities • Develop and maintain enterprise-scale .NET applications using ASP.NET Core 9.0 and C# • Design and implement RESTful APIs for biogas trading, inventory management, and regulatory reporting • Build complex business logic for RINS credit calculations, LCFS compliance, and carbon credit trading • Work with PostgreSQL … and Microsoft Identity Platform • Develop email workflow systems and automated reporting for regulatory compliance • Create scheduled background jobs using Quartz.NET for data processing and calculations • Integrate with Microsoft Graph API for SharePoint document management via Azure MS Graph • Build real-time features using SignalR for live trading updates • Implement data validation using FluentValidation • Work with Docker and OpenShift for … containerized deployments Required Technical Skills • 5+ years of experience with .NET development (C#, ASP.NET Core) • Strong experience with Entity Framework Core and PostgreSQL • Proficiency in RESTful API design and OpenAPI/Swagger documentation • Experience with authentication systems (OAuth2, JWT, Azure AD) • Knowledge of containerization (Docker) and Kubernetes/OpenShift • Experience with background job processing and scheduled tasks • Understanding More ❯
Employment Type: Contractor
Rate: £280 - £297 per day
Posted:

Senior Software Engineer, Fleet Managment

Fleet, Hampshire, United Kingdom
Hybrid/Remote Options
Flock Safety Group
directly influence the growth of a young company Excited about working on a fast-paced, constantly evolving product Familiar with Typescript (Node) as web services in addition to general API design Confident in a modern web framework (React, Vue, Angular, etc). We leverage React with Typescript Familiar with various data stores and know how to interact with … Confident in SQL Familiar with Docker and how to run locally and deploy remotely via Helm to Kubernetes Familiar with AWS and have used some managed services like S3, API Gateway, SQS, etc. Feeling uneasy that you haven't ticked every box? That's okay; we've felt that way too. Studies have shown women and minorities are less … knowledge; i.e. public slack channels, etc The First 60 Days Ability to perform role with decreased need for guidance Able to complete features with little support Understand the software design philosophies being used Be comfortable navigating through the code base Engaged during technical conversations to increase quality of input Collaborate with cross-functional teams Understand what works well, limitations More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Product Manager

reigate, south east england, united kingdom
WTW
vision. Other Highly Desirable, But Not Essential Skills Are Background in Software development, data science, or data engineering. Exposure to cloud platforms (e.g., AWS, Azure, GCP). Understanding of API design, microservices architecture, or event-driven systems. Experience in B2B enterprise software environments with complex stakeholder landscapes. Product management certification (e.g., CSPO, Pragmatic Institute, AIPMM). Degree-educated More ❯
Posted:

Senior Software Engineer

South East London, London, United Kingdom
Bright Purple Resourcing
fast to take things to the next level. Youll join as a Senior Backend Engineer , taking ownership of complex Python/Django services that power enterprise decarbonisation. Expect to design elegant APIs, tackle data-heavy challenges, and collaborate closely with sustainability experts and product teams. What makes this special? High-performance engineering team smart, passionate, and collaborative Big mission …/CD, and plenty of greenfield challenges Youll be a great fit if you bring: 7+ years backend experience (Python expertise essential) Strong knowledge of Django (or similar) and API design Experience scaling apps, with an eye for performance and reliability A proactive, problem-solving mindset and love for collaboration Enjoy a collaborative, chic, and modern office environment More ❯
Employment Type: Permanent
Salary: £95,000
Posted:

eFX Engineer

London, South East, England, United Kingdom
Sanderson
Manchester)Up to £160,000 + benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security … compliance, and performance standards What You'll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge More ❯
Employment Type: Full-Time
Salary: £84,000 - £160,000 per annum
Posted:

Front Office Technical Team Lead

South East, United Kingdom
CMC Markets UK Plc
with your front-end counterpart to ensure alignment across the stack, to support the firm's market-making business across ranging Equities, FX, Crypto & Commodities asset classes Lead the design, development, and maintenance of the infrastructure estate, microservices, web APIs, and the business logic delivery, keeping projects on track and within scope. Drive technical decisions and trade-offs balancing … the role, including all relevant regulatory and legislative training KEY SKILLS AND EXPERIENCE Strong expertise in Java, Spring Framework/Spring Boot, or related backend frameworks Solid understanding of API design, microservices, and distributed messaging architectures Solid experience in advocating for and mentoring other team members, promoting coding reviews, enforcing team conventions Track record in driving initiatives/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Technical Business Analyst - GenAI

London, South East, England, United Kingdom
Adecco
testing activities. Key Responsibilities: Lead requirements analysis and documentation for complex digital projects. Write clear, detailed user stories for development and test teams. Specify and model data requirements, including API documentation. Facilitate workshops with stakeholders to capture business needs. Collaborate with Agile teams to ensure alignment with delivery goals. Maintain awareness of emerging technologies, including generative AI. Essential Skills … modelling. Demonstrated ability to write user stories for large development teams. Experience working in high-performing Agile or Scrum environments. Desirable Skills: Knowledge of digital transformation programmes. Familiarity with API design and documentation. Awareness of generative AI concepts. Professional certifications (e.g., BCS, IIBA) desirable but not mandatory. Please submit a copy of your CV for more information on More ❯
Employment Type: Contractor
Rate: £600 - £650 per day
Posted:

Systems Integration Specialist

Milton Keynes, England, United Kingdom
Hybrid/Remote Options
Network IT Recruitment Limited
and deliver solutions that have a significant social impact. Key Responsibilities Lead and manage engineering teams: Drive performance, motivation, and delivery of high-quality integrated solutions. Architect technical solutions: Design and develop scalable, secure architectures that enable interoperability across complex environments. Oversee full development lifecycle: Ensure robust integration, configuration management, and rigorous testing practices. Champion DevOps and automation: Promote … Implement and monitor security protocols and industry standards. Drive innovation: Evaluate emerging technologies and integration tools to enhance system performance and scalability. Experience Required Proven experience in systems integration, API design, and enterprise architecture. Strong technical leadership with a track record of delivering complex projects. Expertise in cloud services, microservices, and distributed systems. Skilled in data modeling, database … design, and managing large-scale data flows. Knowledge of DevOps practices, TDD, and automated testing. Ability to communicate technical concepts to non-technical stakeholders. More ❯
Posted:

Senior Business Analyst

London, South East, England, United Kingdom
TXP Technology x People
their potential applications. Develop clear and effective data models and supporting documentation. Write and maintain user stories for large development and testing teams. Define and document data requirements and API specifications . Collaborate closely with cross-functional teams in an Agile/Scrum environment to ensure successful delivery. Essential Skills & Experience Strong core business analysis capabilities, including requirements definition … and stakeholder management. Demonstrated experience in data modelling , API documentation , and digital service delivery . Proven success working within Agile/Scrum frameworks and contributing to high-performing agile teams . Proficiency with Jira and other agile delivery tools. Prior experience working within the public sector (central or local government). Solid understanding of digital delivery practices in government … or similar settings. Desirable Knowledge Awareness of Generative AI tools and their potential applications. Experience defining and managing data requirements across large-scale systems. Familiarity with API design and documentation standards. If you're an experienced Business Analyst looking to make an impact within a digital transformation environment, we'd love to hear from you. More ❯
Employment Type: Contractor
Rate: £0 per annum
Posted:

Lead Software Engineer – Azure / .NET

London, South East, England, United Kingdom
Arc IT Recruitment
Lead Software Engineer – Azure/.NET Remote/London (occasional office visits) £Competitive + 20% bonus + excellent benefits Azure, C#, .NET, API A Lead Software Engineer with strong experience in Azure and C#/.NET is required by a global, prestigious luxury brand. This is a hands-on leadership role where you will translate architectural vision into high … performance, enterprise-grade solutions. Working closely with the Global Head of Engineering and a talented global team of developers and architects, you will plan, design, and deliver scalable, secure, and automated cloud platforms within Microsoft Azure. The organisation has beautiful offices in the West End, with a requirement to attend approximately once a fortnight. Key Responsibilities: Design and … deliver high-performance, public-facing REST APIs and system integrations within a modern Azure environment. Produce API documentation that adheres to OpenAPI 3.x standards. Lead and mentor a small, focused development team, promoting collaboration, code quality, and technical excellence. Modernise legacy systems and drive the development of next-generation, cloud-native solutions aligned with architectural best practices. Champion DevOps More ❯
Employment Type: Full-Time
Salary: £95,000 - £105,000 per annum
Posted:
API Design
the South East
10th Percentile
£64,850
25th Percentile
£67,500
Median
£75,000
75th Percentile
£118,750
90th Percentile
£146,000