7 backend engineer jobs found in London

Location: Stratford, London Rate: £400–£450 per day (Outside IR35) Contract Length: 6-12 months Client: Global Consultancy (End Client: Confidential Financial Institution) We are partnering with a global consultancy who are delivering an AI‑driven automation and orchestration programme for a major enterprise client. They require an experienced AI Engineer / Senior Python Engineer with strong microservices experience, LLM integration and AWS serverless expertise to support the build of an intelligent prompt‑orchestration platform powered by AWS Bedrock. Key Responsibilities Develop and maintain Python microservices, serverless functions (AWS Lambda), backend APIs and Python packages Build LLM‑powered agents, orchestration flows and MCP servers using AWS Bedrock Analyse logs, traces and evaluation outputs from a live AI product environment Design and maintain REST APIs interacting with AWS services including OpenSearch, DynamoDB, Kendra and S3 Build and...

Salesforce Engineer | £400 – £450 | Outside IR35 | 6 Months | Remote First   We’re recruiting for an experienced Salesforce Engineer for a 6-Month contract role. This position will play a key role in leading Salesforce refactoring, modernising backend systems, and driving modern engineering practices across our clients platform. Offering £400 - £450 per day, this role is determined as Outside IR35 and may require occasional travel to the office most local to you.   Key Requirements Take ownership of large‑scale Salesforce Apex refactoring and backend process improvements Enhance Salesforce integration architecture, reliability, CI/CD, and automated testing Drive modern engineering practices and support AI‑assisted development tools Resolve technical debt, improve performance, and ensure scalable architecture Requires strong Salesforce Apex, Java, CI/CD, integrations, automation, and refactoring experience Previous experience working in Fintech or regulated...

Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required. Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot Deliver well-structured, maintainable, and testable code aligned with project...

Full job description Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a  Senior Software Engineer (Java) – Contractor  at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable...

Frontend Developer (Contract) - Fully Remote (UK Based) Role: Frontend Developer (Contract) Location: Fully Remote (UK) Contract Length: 6 Months (Initial) Day Rate: £400–£500 per day (Outside IR35) Start Date: ASAP 🚀 The Opportunity We’re working with a fast-growing digital product company that is scaling its engineering team to support a major platform rebuild. They are looking for a highly experienced Frontend Developer to join on a contract basis and help deliver a modern, high-performance web application used by thousands of users across the UK. This is a fully remote role (UK-based), offering the chance to work on a greenfield product with a strong engineering culture and autonomy. 🛠️ Responsibilities Build and maintain scalable frontend applications using modern frameworks Collaborate closely with designers, backend engineers, and product managers Contribute to architecture decisions and technical direction Implement responsive,...

Full job description The Role We are recruiting for a Digital Transformation Project Manager to support a government backed programme focused on modernising infrastructure and building systems. This is an outside IR35 contract offering £350 - £400 per day. Candidates must hold SC clearance or be eligible to obtain it. You will be responsible for delivering digital transformation initiatives across infrastructure, engineering and building services environments, working closely with stakeholders to ensure successful project delivery. Key Responsibilities Deliver digital transformation projects across infrastructure and building systems Manage full project lifecycle from planning through to delivery and handover Coordinate with internal teams, engineers and external stakeholders Ensure projects are delivered on time, within scope and budget Support integration of digital systems including BMS, smart building technology and asset...

QA Automation Engineer Own QA at an award-winning E-commerce company E-commerce - Shopify/Recharge platform Modern QA Automation tools/frameworks (Cypress, Playwright, Selenium etc 6 months + Extensions | Outside IR35 Prior experience in E-commerce w/Shopify/Recharge heavily prioritised I'm working with an award-winning E-commerce company. Their scientifically backed, leading high street product has transformed thousands of lives and they are constantly evolving with an ever-growing customer base and successful E-commerce and subscription model. To support this evolution, they are looking for experienced QA Engineers to take over and own the QA function of the business. Ideally, you have some proficiency in test automation, modern QA tools and familiarity with key testing frameworks such as Cypress, Playwright, Selenium etc. Even more valuable if you have taken over and owned QA infrastructure/worked as a sole QA. As this is an E-commerce platform,...