96,427+ Backend Software Engineer Python Fastapi Sql London Client Server Jobs in UK — Top Companies Hiring June 2026

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Data Engineer Python/SQL

Data Engineer & AI Engineer - Belfast (Hybrid)Multiple Roles | Competitive Salary + Strong Career GrowthThe OpportunityA leading organisation is seeking multiple Data Engineers to join a growing technology team delivering modern data platforms and scalable solutions across a diverse client base.This role ...

Software Engineer (AI+Fullstack)

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Base locations: London, Manchester, Newcastle or Glasgow Job Type: Permanent | Hybrid (2 days per week) | Occasional travel to client siteOverview:<b ...

Software Engineer (AI+Fullstack)

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Base locations: London, Manchester, Newcastle or GlasgowJob Type: Permanent | Hybrid (2 days per week) | Occasional travel to client site ...

Software Engineer (AI+Fullstack)

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Base locations: London, Manchester, Newcastle or Glasgow Job Type: Permanent | Hybrid (2 days per week) | Occasional travel to client site<br ...

Software Engineer (AI+Fullstack)

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare optionsBase locations: London, Manchester, Newcastle or GlasgowJob Type: Permanent | Hybrid (2 days per week) | Occasional travel to client site< ...

SQL/ Python Developer

Title:SQL/ Python Developer About KBR and the Project KBR are a global technical solutions provider with 28,000 employees worldwide, with operations in 34 countries delivering to customers in 80 countries. KBR work collaboratively with their wide customer base to deliver solutions tha ...

SQL Server Database Administrator

Amex GBT is a place where colleagues find inspiration in travel as a force for good and – through their work – can make an impact on our industry. We’re here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued. Amex GBT is seeking a Junior S ...

Senior Full Stack Engineer (GCP, Python, JavaScript) Remote

My London based client are looking for an experienced Full Stack Engineer for an initial 6 month contract to start ASAP. The position can also be fully remote. The ideal candidate will have the following experience: Google Cloud: Experience deploying and managing applications within the Google Cloud Plat ...

Principal AI Architect & VP — Hybrid, Scale AI Solutions

Citibank (Switzerland) AG in Greater London is seeking a Principal AI Software Engineer, Senior Vice President, to architect scalable backend systems for AI tools. The role demands advanced Python and FastAPI knowledge and includes responsibilities like driving AI initiatives and collaborating with cross-functio ...

Software Engineer Backend

**LiveRamp is the data collaboration platform of choice for the world’s most innovative companies. A groundbreaking leader in consumer privacy, data ethics, and foundational identity, LiveRamp is setting the new standard for building a connected customer view with unmatched clarity and context while protecting p ...

Software Engineer Backend

**LiveRamp is the data collaboration platform of choice for the world’s most innovative companies. A groundbreaking leader in consumer privacy, data ethics, and foundational identity, LiveRamp is setting the new standard for building a connected customer view with unmatched clarity and context while protecting p ...

AI Engineer Financial Service Consulting

AI Engineers & Technical AI LeadersLondon | HybridWe're supporting a major consulting and technology organisation delivering AI and data transformation programmes across Financial Services and BankingThe focus is applied AI engineering, building production grade AI solutions across ba ...

PySpark / SQL Developer Python

Pyspark/SQL Developer – Automation/SQL/PySpark – sought by leading investment bank based in London – Hybrid – Contract *inside IR35 – umbrella* Key Responsibilities: Develop, maintain, and optimize PySpark data processing pipelines. Automate data ...

SQL Server and Sharepoint SME

Senior IT Database and Web Platform Engineer Location: Birmingham (Hybrid,3 days per week in office) Salary: CompetitiveA leading international law firm is seeking a Senior IT Database and Web Platform Engineer to join their Birmingham-based IT Services team excellent opportunity to play a critic ...

Python Backend Developer

At Mustard Systems, we leverage statistical modeling to dive into sports events and help us make informed predictions about future outcomes. By utilising our unique datasets, advanced statistical models, and custom-built software, we strive to accurately forecast sports results.We value quick de ...

Software Engineer TypeScript / Next.js / SQL

Software Engineer - TypeScript / Next.js / SQLA growing technology-led business is rebuilding and modernising its core systems — including operational workflows, integrations, reporting, customer tooling, and internal platforms.These systems play an important role in supporting day-to-day operati ...

AI Engineer Financial Services Consulting

AI Engineers & Technical AI LeadersManchester | HybridWe're supporting a major consulting and technology organisation delivering AI and data transformation programmes across Financial Services and BankingThe focus is applied AI engineering, building production grade AI solutions acro ...

AI Engineer Financial Service Consulting

AI Engineers & Technical AI LeadersScotland | HybridWe're supporting a major consulting and technology organisation delivering AI and data transformation programmes across Financial Services and BankingThe focus is applied AI engineering, building production grade AI solutions across ...

Senior Backend Software Engineer

Our Mission 🚀Bud's mission is simple. We're here to create the world’s most compelling financial data products. The products we're building are used by some of the world's most prestigious institutions to help millions of their customers take control of their finances. <p ...

Senior Software Engineer Python

Senior Software Engineer - Malvern YT Tech is representing a market-leading Security Technology firm in Malvern currently scaling its R&D team. We are looking for a Senior Software Engineer to take technical ownership of a business-critical product codebase within a multidisciplinary environment. This is a high- ...

Senior Software Engineer Python

Vortexa is a fast-growing international technology business founded to solve the immense information gap that exists in the energy industry. By using massive amounts of new satellite data and pioneering work in artificial intelligence, Vortexa creates an unprecedented view on the global seaborne energy flows ...

Senior Python Software Engineer

Job Title: Senior Python Software Engineer Location: Bristol (Remote - Monthly Site Visit)Salary: £70,000 - £80,000 (Depending on Experience) Please note: Applicants must have permanent and unrestricted right to work in the UK, as sponsorship is not available for this role.Overview:< ...

Senior Python Software Engineer

Senior Software Engineer - Python - Agentic AIFully Remote (UK / Europe)A small and talented team of engineers, data scientists, and AI specialists are quietly building something exciting. Well-backed and operating in the AI delivery space, they partner with PE backed businesses to solve complex ...

Software Engineer III (Python)

Software Engineer III (Python) Are you passionate about building high‑performance backend systems using Python?Do you thrive on solving complex engineering challenges? About the team: You will join an Agile squad within Elsevier’s Data Engi ...

Senior Software Engineer (Python)

About the roleOur Technology team builds the systems and experiences that keep Revolut moving. From the infrastructure behind our innovative app to the features used by millions of people around the world, they bring sharp thinking, speed, and a focus on meaningful impact to everything they do.We ...

Senior Product Engineer, Full Stack Energy

Senior Product Engineer, Full Stack - Energy£70,000 to £95,000PermanentLondon, hybridThe opportunityOur client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market.Operating in a complex ...

Senior Backend Software Engineer

| Senior Backend Software Engineer | London | Hybrid | £85,000 - £90,000 |Hexwired Recruitment is partnered with an industry-leading energy technology company developing advanced software solutions that are helping drive the transition toward a more sustainable and flexible energy future.You’ll j ...

Senior Backend Software Engineer

| Senior Backend Software Engineer | London | Hybrid | £85,000 - £90,000 |Hexwired Recruitment is partnered with an industry-leading energy technology company developing advanced software solutions that are helping drive the transition toward a more sustainable and flexible energy future.You’ll j ...

Software Engineer (SC Cleared)

Software Engineer (Python / React) 📍 Cheltenham Area - on siteContract: Inside IR35, 12 months+The OpportunityWe are seeking talented Software Engineers to join a cutting-edge programme supporting UK Intelligence customers.These roles focus on building modern, cloud-native ...

Senior Software Engineer TypeScript / Next.Js / SQL

Senior Software Engineer - TypeScript / Next.Js / SQLA growing technology-led business is rebuilding and modernising the core system — including billing, invoicing, reconciliation, integrations, operational workflows, reporting, customer tooling, and internal platforms.These systems sit at the he ...

Senior Backend Python Developer

Senior Backend Python Developer6-Month contract - Inside IR35 - up to £450 per dayLeeds based - hybrid working - 3 days onsiteResponsibilitiesBuild and maintain backend services and APIs in line with existing architectural patterns and standards.Implement business logic, data ...

Full Stack Engineer

Senior Full Stack Engineer | London | Hybrid | AI Product Scale Up (start-up) | Python & TypeScriptSalary: £80,000 - £95,000 + equityLocation: London, hybrid working (1 day per week)A high growth AI product company is hiring a Senior Full Stack Engineer to join a strong engineering te ...

Software Engineer III (Python & C#)

Software Engineer III (Python & C#) Excited to architect, build, and elevate complex systems? Do you thrive in solving challenging problems with Python and C#, while driving engineering excellence across teams? About the team: LexisNexis Intellectual Proper ...

Gen AI Python Software Engineer

**Discover your future at Citi** Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact. **Job Ov ...

Software Engineer (Python and Java)

**Description** **Software Engineer** **Programme Name:** Maritime Internal Research & Development **Location:** Farnborough, with flexibility to work from home dependent on business demands **Salary:** £47,600 - £61,000 **Are you ready for your next career challen ...

Software Engineer III (Python & C#)

Software Engineer III (Python & C#) Excited to architect, build, and elevate complex systems? Do you thrive in solving challenging problems with Python and C#, while driving engineering excellence across teams? About the team: LexisNexis Intellectual Proper ...

Senior Software Engineer (Python / AWS)

Senior Software Engineer - Python / AWSWest Midlands based office - Remote role with fortnightly office trips We're partnering with a fast-growing, technology-led organisation looking to hire a Senior Software Engineer to help shape and scale a critical cloud platform.This is a hands-on r ...

Application Software Engineer

Application Software EngineerLocation: Fareham, Hampshire Salary: Up to £65,000 DOE + BenefitsWe are seeking an experienced Application Software Engineer to join a leading engineering team developing innovative software solutions for advanced underwater robotics systems. This is an exciting o ...

Senior Backend Software Engineer Infrastructure

A World-Changing CompanyPalantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more.The R ...

IT Software & SQL Developer

We’re looking for an IT Software & SQL Developer to join our team in Grimsby and play a key role in shaping and delivering modern, data-driven solutions. You’ll be working across a Microsoft-focused tech stack, helping to build scalable applications, streamline processes through automation, an ...

Senior Software Engineer – Python / AWS / Cloud Native (SC or DV Cleared)

Senior Software Engineer – Python / AWS / Cloud-Native EngineeringSC or DV Cleared | Government Programme | AWS | Python | Terraform | MicroservicesLocation: UK (Hybrid / Remote)Security Clearance: SC or DV requiredEngagement: ...

Research Development Software Engineer

Title : Research Development Software EngineerLocation: Cambridge, UK- 50 % on siteEnd date: 30th June 26 (12 months intent)Location: A minimum of 50% per week is expected onsite rising to 60% at some point in the future.Required * Strong software engineering skills in Py ...

Python Software Developer

Python Software Developer (SC Cleared) Location: Manchester, Leeds, Newcastle, Birmingham, London Contract :6 MonthsSecurity RequirementActive SC Clearance required OverviewWe are seeking experienced Python Software Developers to support the delivery of large-scale analytics and data ...

Full Stack Software Engineer C# NET Core, React

Full Stack Software Engineer - C# NET Core, React JavaScript, SQLThis is a new and exclusive opportunity for a Full Stack Engineer with technical strengths in C# NET Core, JavaScript, & SQL to join this thriving online education businessRole detailsTitle: Full Stack Software Engineer ...

Senior Software Engineer Python / hx Renew

**Who Are We?** Taking care of our customers, our communities and each other. That’s the Travelers Promise. By honoring this commitment, we have maintained our reputation as one of the best property casualty insurers in the industry for over 170 years. Join us to discover a culture that is rooted in inn ...

Senior Software Engineer Python / hx Renew

**Who Are We?** Taking care of our customers, our communities and each other. That’s the Travelers Promise. By honoring this commitment, we have maintained our reputation as one of the best property casualty insurers in the industry for over 170 years. Join us to discover a culture that is rooted in inn ...

Software Developer

I am looking for a Middleweight Software Developer for a 6-month fixed-term contract opportunity for an extremely exciting business based in Plymouth. This role could potentially turn into a full-time permanent role before the end of the initial 6-month fixed-term contract. In this role you will be invol ...

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    Backend Software Engineer Python Fastapi Sql London Client Server Jobs in United Kingdom Job Search Guide, Trends and Insights