Backend Developer jobs in United Kingdom hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $187,986/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
United Kingdom
AI/ML
Software
Data
Security
DevOps & Cloud
Leadership
Product
Design
Fintech
Hardware & Chips
Defense
Aerospace
Biotech
Energy
Robotics
Automotive
MedTech
Science
Applied AI
LLM & agents
AI integration
Research
MLOps
AI hardware
Vision & speech
AI product
AI Safety
LLM
RAG
PyTorch
Prompting
TensorFlow
LangChain
Fine-tuning
NLP
More
Backend
ERP & CRM
Solutions
QA
Frontend
Mobile
Full Stack
Web3
Gamedev
Python
Java
JavaScript
TypeScript
C++
C#
Go
Kotlin
PHP
Rust
More
Data Science
Data Engineering
Business analysts
Data analysts
Systems analysts
BI
Databases
SQL
Python
Power BI
Databricks
Snowflake
Tableau
Spark
BigQuery
dbt
More
Security engineers
AppSec & DevSecOps
SOC & response
Threats & pentest
IAM
Security leaders
SIEM
ISO 27001
Zero Trust
SOC 2
Active Directory
Splunk
OWASP
PCI DSS
More
IT support
DevOps & SRE
Sysadmins
Networks
Cloud
Data centers
Linux
AWS
Azure
Kubernetes
Terraform
GCP
More
Engineering managers
Engineering directors
AI & data directors
Tech PM
CTO & C-level
Product & IT directors
Product managers
Program managers
Heads of product
Product Ops
Project managers
Scrum & Agile
Tech writers
DevRel
Release managers
AI agents
Jira
SQL
A/B tests
Power BI
More
Product designers
UX/UI
Graphic & visual
Design leads
Brand & art
Web designers
Motion
Figma
Photoshop
After Effects
Illustrator
More
Payments
Digital banking
Lending & BNPL
Trading & investing
InsurTech
RegTech & fraud
Finance software & data
Crypto
Engineering
Data & ML
Quant
Product & design
Security
More
Chip design
Fab equipment
Fabs
Electronics & RF
Embedded
Photonics
Architecture
Quantum
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Defense manufacturing
C4ISR
Missiles & air defense
Electronic warfare
Military drones
Defense AI
Space defense
Intelligence
Naval
Military comms
With clearance
No clearance
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Aircraft
Satellites
Avionics
Rockets & launch
Space services
Satcom
Earth observation
eVTOL
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Drugs
Lab equipment
Oncology
CRO & CDMO
Biologics
Immunology
Cardiometabolic
Neurology
Vaccines
Rare diseases
Genomics
Gene therapy
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Nuclear
Renewables
Storage
Hydrogen
EV charging
Fusion
Grid & electrification
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Robot software
Self-driving
Industrial robots
Drones
Warehouse robots
Humanoids
Industrial automation
Mechatronics
Medical robots
Engineering
Science & R&D
Technicians
Software & data
Internships
More
EV & powertrain
ADAS & self-driving
Vehicle software
Vehicle engineering
Test & safety
Carmakers
Suppliers
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Diagnostics
Surgery
Neurotech
Cardio
Diabetes
Orthopedics
Imaging
Patient monitoring
Medical robots
Engineering
Science & R&D
Technicians
Software & data
Internships
More
Physics
Chemistry
Materials
Life sciences
Earth & environment
Computational
Postdocs & fellows
Research institutes
8,798 remote jobs are open to candidates in United Kingdom.Show remote jobs
worldremit.com • HQ: London, United Kingdom • Money Transfer & Remittances • 201-500 employees • Est. 2010 • Hiring 29, 6 new
HQ: London, United Kingdom • Money Transfer & Remittances • 201-500 employees • Est. 2010 • Hiring 29, 6 new
WorldRemit is a London money transfer company founded in 2010 that sends remittances digitally to recipients in developing markets. Its network pays out to bank accounts, mobile money wallets and cash agents across scores of countries. The company was one of the first to move migrant remittances from cash shops to smartphones.
citi.com • HQ: New York, United States • Cards & Card Issuing • Payment Processing & Gateways • Wealth Management & Financial Advisors • Investment Banking & M&A Advisory • Commercial & Retail Banks • 5000+ employees • Est. 1812 • Trust A • Hiring 3171, 221 new
HQ: New York, United States • Cards & Card Issuing • Payment Processing & Gateways • Wealth Management & Financial Advisors • Investment Banking & M&A Advisory • Commercial & Retail Banks • 5000+ employees • Est. 1812 • Trust A • Hiring 3171, 221 new
Citi is one of the largest banks in the world, tracing its lineage to the City Bank of New York founded in 1812 and taking its modern shape through the 1998 merger that created Citigroup. Its most distinctive asset is a cross-border payments and treasury network unmatched by any competitor, moving trillions of dollars a day for multinational corporations, governments and other banks across roughly ninety countries. Alongside that institutional franchise it runs markets and investment banking, wealth management and a United States personal bank, and has spent recent years simplifying itself by exiting consumer operations across Asia, Europe and Latin America.
hmrc.ca • HQ: London, United Kingdom • Public Finance • Hiring 8, 5 new
HQ: London, United Kingdom • Public Finance • Hiring 8, 5 new
HM Revenue and Customs is the United Kingdom tax authority that collects taxes and pays benefits and support schemes. It operates regional centres across the country and hires contractors such as document controllers, software developers, legal cost litigators and senior DevOps identity platform engineers. The department is headquartered in London, United Kingdom.
capgemini.com • HQ: Paris, France • Management Consulting • Engineering Services • Systems Integrators • IT Consulting & Digital Transformation • 5000+ employees • Est. 1967 • IT services • Trust B • Hiring 4593, 331 new
HQ: Paris, France • Management Consulting • Engineering Services • Systems Integrators • IT Consulting & Digital Transformation • 5000+ employees • Est. 1967 • IT services • Trust B • Hiring 4593, 331 new
Capgemini is a French information technology services and consulting group founded in Grenoble in 1967 by Serge Kampf, and one of the largest IT service providers in the world. It designs, builds and runs systems for large enterprises and governments across some fifty countries, with a delivery workforce concentrated in India and a European client base heavier than most of its competitors. The group is organised into Capgemini Invent for strategy and design, Capgemini Engineering for research and development services acquired with Altran, and Sogeti for local technology services, and it has reoriented its portfolio around cloud migration, data platforms and generative AI.
trados.com • HQ: Chalfont St Peter, United Kingdom • AI Training Data & Annotation • Natural Language Processing • Translation Services • 201-500 employees • Est. 1984 • Trust A • Hiring 68, 17 new
HQ: Chalfont St Peter, United Kingdom • AI Training Data & Annotation • Natural Language Processing • Translation Services • 201-500 employees • Est. 1984 • Trust A • Hiring 68, 17 new
Trados is a translation technology brand of the RWS Group, headquartered in Chalfont St Peter, England, offering the Trados Studio desktop translation editor, Trados Team, Business and Enterprise translation management, Passolo software localization and Language Weaver Pro machine translation. Founded in Stuttgart in 1984, it was acquired by SDL in 2005 and became part of RWS, which is listed on AIM, when RWS bought SDL in 2020; its tools serve freelance translators, language service providers and corporate localization teams. Its board is the RWS group board, hiring product managers, software and test engineers, localization leads and remote AI search evaluators.
uipath.com • HQ: New York, United States • Document AI • AI Agents • Workflow & Process Automation (RPA, BPM) • 51-200 employees • Est. 2005 • NYSE: PATH • Trust A • Hiring 96, 11 new
HQ: New York, United States • Document AI • AI Agents • Workflow & Process Automation (RPA, BPM) • 51-200 employees • Est. 2005 • NYSE: PATH • Trust A • Hiring 96, 11 new
UiPath is a Romanian-founded American company started in Bucharest in 2005 that became the leading vendor of robotic process automation, software robots that operate other applications through their user interfaces to automate work no integration existed for. Having grown enormously on that premise, it has spent recent years absorbing the fact that language models can do parts of the same job differently, and has rebuilt its platform around agentic automation that combines deterministic robots with model-driven agents. Headquartered in New York and listed on the New York Stock Exchange, it retains one of the largest installed automation estates in the enterprise market.
lseg.com • HQ: London, United Kingdom • Data Providers & Datasets • Financial Data & Market Intelligence • Stock Exchanges & Market Infrastructure • 5000+ employees • Est. 2007 • Trust B • Hiring 535, 60 new
HQ: London, United Kingdom • Data Providers & Datasets • Financial Data & Market Intelligence • Stock Exchanges & Market Infrastructure • 5000+ employees • Est. 2007 • Trust B • Hiring 535, 60 new
London Stock Exchange Group (LSEG) is a global financial markets infrastructure and data provider headquartered in London, England. Formed as a group in 2007, it owns the London Stock Exchange, LSEG Data and Analytics built on the former Refinitiv, FTSE Russell and LCH, and holds a majority stake in Tradeweb, with large operations centres in Bengaluru, Colombo, Bucharest, Gdynia and Taguig. It hires software and data engineers, site reliability engineers, valuations and post-trade specialists, customer success and go-to-market managers, finance staff and journalists for services such as ZAWYA.
caisgroup.com • HQ: New York, United States • Financial Software & Embedded Finance • 51-200 employees • Est. 2009 • Trust B • Hiring 14, 1 new
HQ: New York, United States • Financial Software & Embedded Finance • 51-200 employees • Est. 2009 • Trust B • Hiring 14, 1 new
CAIS is a New York financial technology company founded in 2009 that connects independent wealth advisers to alternative investments. Its platform handles fund access, education and operational workflow for private equity, credit and hedge fund allocations. The company serves thousands of advisory firms in the United States.
cusp.ai • HQ: Cambridge, United Kingdom • Manufacturing • AI for Science • Artificial Intelligence • 501-1000 employees • Est. 2024 • Startup • Trust B • Hiring 23, 7 new
HQ: Cambridge, United Kingdom • Manufacturing • AI for Science • Artificial Intelligence • 501-1000 employees • Est. 2024 • Startup • Trust B • Hiring 23, 7 new
CuspAI builds generative models that search for new materials with target properties. Its first applications focus on carbon capture materials. The company was founded by researchers from DeepMind and academia.
pleo.io • HQ: Copenhagen, Denmark • Cards & Card Issuing • Procurement & Spend Management • 501-1000 employees • Est. 2015 • Trust A • Hiring 26, 6 new
HQ: Copenhagen, Denmark • Cards & Card Issuing • Procurement & Spend Management • 501-1000 employees • Est. 2015 • Trust A • Hiring 26, 6 new
Pleo is a major European FinTech unicorn and smart business spend management enterprise headquartered in Copenhagen, Denmark. Founded in 2015 by Fintech entrepreneurs Jeppe Rindom (CEO) and Niccolo Perra, the company operates on a B2B SaaS subscription model combined with interchange revenue from corporate card transactions.
faculty.ai • HQ: London, United Kingdom • Management Consulting • Custom Software Development • Decision Intelligence • AI Consulting & Integration • 201-500 employees • Est. 2014 • Startup • Trust A • Hiring 67, 9 new
HQ: London, United Kingdom • Management Consulting • Custom Software Development • Decision Intelligence • AI Consulting & Integration • 201-500 employees • Est. 2014 • Startup • Trust A • Hiring 67, 9 new
Faculty is an artificial intelligence technology company headquartered in London, United Kingdom, and founded in 2014. The firm provides services including AI strategy consulting, custom software development, and specialized talent programs to help organizations implement decision intelligence. It operates as a subsidiary of Accenture and serves a global client base across sectors such as defense, healthcare, and energy, focusing on the safe and high-performance deployment of AI solutions.
MONY Group is a UK price comparison group that operates MoneySuperMarket, MoneySavingExpert and Quidco. Its brands supply products to more than 24 million unique monthly visitors, and the company hires for product, commercial, finance, CRM and press roles. The company is headquartered in London, United Kingdom.
mastek.com • HQ: Mumbai, India • Enterprise Apps Implementation Partners • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1982 • Hiring 26, 6 new
HQ: Mumbai, India • Enterprise Apps Implementation Partners • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1982 • Hiring 26, 6 new
Mastek provides enterprise technology and digital transformation services. Its practices cover cloud applications, data engineering and public sector programmes. The company has a substantial presence in the United Kingdom government market.
blackrock.com • HQ: New York, United States • Nonprofits & Foundations • Artificial Intelligence • Financial Services • Asset Management & Funds • 1001-5000 employees • Est. 1988 • NYSE: BLK • Trust B • Hiring 188, 31 new
HQ: New York, United States • Nonprofits & Foundations • Artificial Intelligence • Financial Services • Asset Management & Funds • 1001-5000 employees • Est. 1988 • NYSE: BLK • Trust B • Hiring 188, 31 new
BlackRock is an American investment management company and the largest asset manager in the world, managing money for pension funds, insurers, sovereign funds, wealth managers and individual investors through mutual funds, iShares exchange-traded funds and institutional mandates. Founded in 1988 and listed on the New York Stock Exchange, it also sells Aladdin, its investment and risk management technology platform, to other financial institutions. The company is headquartered in New York, New York, United States.
kernel.ai • HQ: London, United Kingdom • B2B Company & Contact Data • Data Quality & Observability • Startup • Hiring 15, 5 new
HQ: London, United Kingdom • B2B Company & Contact Data • Data Quality & Observability • Startup • Hiring 15, 5 new
Kernel builds a business identity layer that gives AI agents and sales and operations teams trustworthy company data. It cleans duplicated records, fills in missing parent companies and corrects outdated addresses in CRMs, ERPs and third-party datasets. The company is headquartered in London, United Kingdom.
zeiss.com • HQ: Oberkochen, Germany • Surgical Instruments & Devices • Eyewear • Medical Imaging Systems • Semiconductor Equipment • Optics & Photonic Components • 5000+ employees • Est. 1846 • Trust B • Hiring 775, 61 new
HQ: Oberkochen, Germany • Surgical Instruments & Devices • Eyewear • Medical Imaging Systems • Semiconductor Equipment • Optics & Photonic Components • 5000+ employees • Est. 1846 • Trust B • Hiring 775, 61 new
Zeiss is a German optics and optoelectronics group founded in Jena in 1846 that is owned by a foundation rather than by shareholders, which frees it to invest on very long horizons. Its most strategically important business supplies the optical systems inside extreme ultraviolet lithography machines, without which leading-edge semiconductor manufacturing would not be possible, and it also makes surgical and diagnostic ophthalmic equipment, spectacle lenses, industrial measurement systems, microscopes and camera optics. Headquartered in Oberkochen with a large site in Jena, the group employs tens of thousands of people and spends an unusually high share of revenue on research.
sierra.ai • HQ: San Francisco, United States • LLM & Generative AI • AI Agents • Conversational AI • 1001-5000 employees • Est. 2023 • Trust A • Hiring 171, 30 new
HQ: San Francisco, United States • LLM & Generative AI • AI Agents • Conversational AI • 1001-5000 employees • Est. 2023 • Trust A • Hiring 171, 30 new
Sierra is an American artificial intelligence company founded in 2023 by Bret Taylor, the former co-chief executive of Salesforce and chairman of OpenAI, together with a former Google engineering leader. It builds conversational agents that handle customer service interactions end to end for large consumer businesses, resolving issues by acting on the company's own systems rather than only answering questions, and it charges per resolved outcome rather than per seat. Headquartered in San Francisco and privately held at a multi-billion dollar valuation, it works with retailers, telecommunications operators, financial services firms and healthcare providers.