Backend Technology Development jobs in London

In short As a Backend Engineer in our Commercial cluster, you will be at the heart of On's digital ecosystem. You will design, build, and scale the critical services that power our global e-commerce platform, B2B partner portals, and retail experiences. Your work will directly impact how we deliver

Job Req Id 26956670 Location(s) London, England, United Kingdom Job Type Hybrid Posted Apr. 21, 2026 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 o

Citigroup

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180 countries operating at a scale few can match. From deploying advanced AI to helping shape global marke

Citi

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global mark

eFinancialCareers

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 Overview Engi

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 Overview Engi

Senior Business Development Manager - Fleet Technology & Services South East UK £45,000 - £55,000 basic salary £25,000 OTE uncapped Company Car Pension Healthcare Home-based contract Success in this role will give you the ability to significantly overachieve on the earnings. Six figure earnings

We are a global technology consultancy firm with offices in Middle East, Asia, Europe and USA. We deliver business benefits through innovation. We leverage cutting-edge technology led solutions delivered by a team of skilled professionals, from sustainable software development to cloud services and

Senior Recruitment Consultant | Backend Python Specialist, AI Infrastructure Scale-ups | 360 Business Development and Sourcing | Reporting into Cofounder | London (Hybrid) + Remote Flex We are currently working with some of the most exciting AI companies in the UK as they scale high-performance Pyth

Google

Research and Development Lead, Data Center Technology Systems corporate fare_ Google place Dublin, Ireland; Amsterdam, Netherlands; 2 more; 1 more Advanced Experience owning outcomes and decision making, solving ambiguous problems and influencing stakeholders; deep expertise in domain. info outline_

The Role We are seeking a proactive, highly organised, and technically minded Project Manager to act as a central enabler across engineering, regulatory, and clinical development activities in a fast-paced MedTech start-up environment. In this role, you will ensure our product development remains al

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 Overview Job

We are looking for Sales Development Representatives with 1+ years experience, to join the fastest growing Scottish AI startup, Wordsmith AI. This is to join as a Sales Development Representative based in Edinburgh. Wordsmith AI is the fastest-growing Scottish startup to reach a $100m valuation. Fou

Marex Group

Technology Graduate Trainee, Software Development London, GB Full-Time Technology While professional experience and qualifications are key for this role, make sure to check you have the preferable soft skills before applying if required. Marex Overview Marex Group plc (NASDAQ: MRX) is a diversified

Marex Group

A leading financial services platform is seeking a Technology Graduate Trainee in London. Scroll down the page to see all associated job requirements, and any responsibilities successful candidates can expect. You will launch your career in Financial Technology while collaborating with experienced e

City & Guilds - Associate Recruitment

Would you like to be involved with supporting the development of qualifications in Information Communication Technology? We are looking for Development Consultants to join our team and be part of a growing network of associates. This role gives you the opportunity to work with City & Guilds alon

Oscar Associates Limited

Senior Business Development Manager (CyberSecurity) | £65k Base, £60k OTE | LondonSeeking a driven and commercially minded Technology Business Development Manager to support continued business growth. The successful candidate will be responsible for identifying and securing new business opportunitie

Technology Graduate Trainee, Software Development London, GB Full-Time TechnologyMarex OverviewMarex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financia

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board.Do you want to work for the global leader in the language services and technology industry? Are you interested in helping international brands/organizations find and implement solutions that allow them t

Oscar Associates Limited

Senior Business Development Manager (CyberSecurity) | £65k Base, £60k OTE | LondonWe are seeking a driven and commercially minded Business Development Manager to support continued growth within a leading Cybersecurity Consultancy.This is a new business-focused role , where being a hunter is essentia