Backend Developer jobs in London hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $190,840/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
marksandspencer.com · HQ: London, United Kingdom · Home Decor · Apparel & Fashion Brands · Online Groceries · 1001-5000 employees · Est. 1884 · Trust A · Hiring 80, 17 new
HQ: London, United Kingdom · Home Decor · Apparel & Fashion Brands · Online Groceries · 1001-5000 employees · Est. 1884 · Trust A · Hiring 80, 17 new
Marks & Spencer is a British retailer selling clothing, lingerie, beauty products, home furnishings and food through hundreds of stores in the United Kingdom, an international franchise network and its online shop. Its food business sells own-brand groceries and prepared meals, and it owns a stake in the online grocer Ocado Retail. The company was founded in 1884. The company is headquartered in London, England, United Kingdom.
toogoodtogo.com · HQ: Copenhagen, Denmark · Food & Beverages · Commerce · Marketplaces · 1001-5000 employees · Est. 2015 · Trust B · Hiring 42, 12 new
HQ: Copenhagen, Denmark · Food & Beverages · Commerce · Marketplaces · 1001-5000 employees · Est. 2015 · Trust B · Hiring 42, 12 new
Too Good To Go is a Danish technology company founded in 2015 and headquartered in Copenhagen. Its marketplace lets shops and restaurants sell surplus food that would otherwise be wasted. The platform operates in seventeen countries with tens of millions of users.
hcltech.com · HQ: Noida, India · Science & Engineering · Professional Services · Cybersecurity · Systems Integrators · IT Consulting & Digital Transformation · IT Outsourcing & Dedicated Teams · 5000+ employees · Est. 1976 · Hiring 3662, 792 new
HQ: Noida, India · Science & Engineering · Professional Services · Cybersecurity · Systems Integrators · IT Consulting & Digital Transformation · IT Outsourcing & Dedicated Teams · 5000+ employees · Est. 1976 · Hiring 3662, 792 new
HCLTech is a major Indian multinational information technology (IT) services and consulting company headquartered in Noida, Uttar Pradesh. Spun off from the original HCL Group in 1991, it ranks as one of India's largest technology companies alongside firms like TCS, Infosys, and Wipro.
natwestgroup.com · HQ: Edinburgh, United Kingdom · Financial Services · Wealth Management & Financial Advisors · Commercial & Retail Banks · 1001-5000 employees · Est. 1727 · NYSE: NWG · Trust B · Hiring 65, 23 new
HQ: Edinburgh, United Kingdom · Financial Services · Wealth Management & Financial Advisors · Commercial & Retail Banks · 1001-5000 employees · Est. 1727 · NYSE: NWG · Trust B · Hiring 65, 23 new
NatWest Group is a British banking group with its registered office in Edinburgh that provides retail, commercial and private banking through brands including NatWest, Royal Bank of Scotland, Ulster Bank and Coutts. Formerly the Royal Bank of Scotland Group and listed on the London Stock Exchange, it serves over 20 million customers and runs large operations in London, Edinburgh, Manchester and Bristol plus technology centres in Bengaluru, Gurgaon and Chennai. It hires software, DevOps, infrastructure and site reliability engineers, product owners and technical product managers, regulatory reporting analysts and commercial banking relationship managers.
bloomandwild.com · HQ: London, United Kingdom · Flowers & Florists · Est. 2013 · Hiring 2
HQ: London, United Kingdom · Flowers & Florists · Est. 2013 · Hiring 2
Bloom & Wild is a London direct-to-consumer company founded in 2013 that redesigned flower delivery around a letterbox-sized package. It built its own ordering, forecasting and fulfilment technology to manage a perishable product with sharp demand peaks around gifting occasions. The company has expanded across several European markets and acquired local competitors.
bcg.com · HQ: Boston, United States · Professional Services · Artificial Intelligence · Data & Analytics · Information Technology · Software · Custom Software Development · IT Consulting & Digital Transformation · Analytics & BI Consulting · AI Consulting & Integration · Management Consulting · 1001-5000 employees · Est. 1963 · Hiring 538, 99 new
HQ: Boston, United States · Professional Services · Artificial Intelligence · Data & Analytics · Information Technology · Software · Custom Software Development · IT Consulting & Digital Transformation · Analytics & BI Consulting · AI Consulting & Integration · Management Consulting · 1001-5000 employees · Est. 1963 · Hiring 538, 99 new
Headquartered in Boston, Massachusetts, Boston Consulting Group (BCG) is a premier global management consulting firm advising leading corporations, governments, and non-profit organizations. The company partners with clients across diverse industries to solve their most complex challenges through strategic transformation, digital innovation, operational excellence, and sustainable solutions. Leveraging a vast network of expert consultants operating worldwide, it delivers actionable insights and tailored strategies designed to drive long-term competitive advantage and lasting impact.
openai.com · HQ: San Francisco, United States · Artificial Intelligence · Code Intelligence · Generative Video · Conversational AI · AI Research Labs · Foundation Models · LLM & Generative AI · 5000+ employees · Est. 2015 · Trust B · Hiring 778, 52 new
HQ: San Francisco, United States · Artificial Intelligence · Code Intelligence · Generative Video · Conversational AI · AI Research Labs · Foundation Models · LLM & Generative AI · 5000+ employees · Est. 2015 · Trust B · Hiring 778, 52 new
OpenAI is an American artificial intelligence research and deployment company founded in 2015 with the mission of ensuring that artificial general intelligence benefits all of humanity. It develops the GPT family of large language models and turns them into consumer and developer products, including the ChatGPT assistant, the Sora video model, the Codex coding agent and a commercial API used by millions of developers. Structured as a public benefit corporation controlled by a non-profit foundation, the company is backed by Microsoft and SoftBank and operates from San Francisco.
woven.toyota · HQ: Tokyo, Japan · Smart City · Automotive Manufacturing · Autonomous Driving · Automotive Software · 501-1000 employees · Est. 2018 · Trust B · Hiring 125, 1 new
HQ: Tokyo, Japan · Smart City · Automotive Manufacturing · Autonomous Driving · Automotive Software · 501-1000 employees · Est. 2018 · Trust B · Hiring 125, 1 new
Woven by Toyota is the software and advanced development arm of Toyota, established in 2018 and restructured into its present form in 2023, and it builds the vehicle software the group intends to run across its future models. Its work covers the Arene vehicle software platform, automated driving and safety systems, and Woven City, a purpose-built test community at the foot of Mount Fuji where the group can trial mobility technology in a real inhabited environment. Headquartered in Tokyo, it represents Toyota's attempt to develop software competence internally rather than depend on suppliers.
lila.ai · HQ: Cambridge, United States · Materials Science & Nanotechnology · Laboratory & Pharmaceutical Robotics · AI Research Labs · AI for Science · 201-500 employees · Est. 2023 · Startup · Trust A · Hiring 113, 15 new
HQ: Cambridge, United States · Materials Science & Nanotechnology · Laboratory & Pharmaceutical Robotics · AI Research Labs · AI for Science · 201-500 employees · Est. 2023 · Startup · Trust A · Hiring 113, 15 new
Lila Sciences is an American company launched publicly in 2025 out of Flagship Pioneering with the aim of building what it calls scientific superintelligence: artificial intelligence systems that generate hypotheses and then test them in the company's own automated laboratories. Its distinguishing feature is the closed loop between model and experiment, since most scientific machine learning is limited by the fact that the data it needs has never been generated. Headquartered in Cambridge, Massachusetts and funded at an unusually large scale for a company at this stage, it is working across life sciences and materials chemistry rather than committing to a single field.
tavily.com · HQ: New York, United States · AI Agents · AI Development Tools · AI Search · 11-50 employees · Est. 2024 · Trust A · Hiring 13
HQ: New York, United States · AI Agents · AI Development Tools · AI Search · 11-50 employees · Est. 2024 · Trust A · Hiring 13
Tavily provides web search, page extraction and crawling APIs that let AI agents and LLM applications retrieve current information from the web. The platform grew out of GPT Researcher, an open-source research agent released in 2023, and adds governance and compliance controls for enterprises that let agents access public and private web sources. The company was incubated by Alpha Wave Global, raised $25 million in 2024 and 2025, served customers such as IBM, Cohere and Groq, and was acquired by Nebius Group in February 2026 for $275 million.
nebius.com · HQ: Amsterdam, Netherlands · Data Centers & Colocation · Cloud Platforms (IaaS & PaaS) · AI Compute & Inference · 1001-5000 employees · Trust A · Hiring 344, 18 new
HQ: Amsterdam, Netherlands · Data Centers & Colocation · Cloud Platforms (IaaS & PaaS) · AI Compute & Inference · 1001-5000 employees · Trust A · Hiring 344, 18 new
Nebius is an international technology company that specializes in building full-stack artificial intelligence infrastructure and high-performance cloud GPU platforms for AI model development. Headquartered in Amsterdam, Netherlands, the firm operates energy-efficient data centers across Europe and North America to provide scalable compute, storage, and software tools for machine learning workloads.
braze.com · HQ: New York, United States · Email Marketing · Marketing Automation · 1001-5000 employees · Est. 2011 · NASDAQ: BRZE · Trust A · Hiring 277, 25 new
HQ: New York, United States · Email Marketing · Marketing Automation · 1001-5000 employees · Est. 2011 · NASDAQ: BRZE · Trust A · Hiring 277, 25 new
Braze is an American customer engagement software company founded in 2011 that sends personalised messages across push notifications, in-app messaging, email, text and web based on how users behave inside a product. Its platform ingests behavioural events in real time, segments audiences on that data and orchestrates multi-step campaigns through a visual canvas, which suits consumer applications in media, retail, financial services and travel where timing matters more than list management. Headquartered in New York and listed on Nasdaq, it competes with the marketing clouds of the large enterprise software vendors.
gigs.com · HQ: San Francisco, United States · MVNO · 501-1000 employees · Est. 2020 · Startup · Trust A · Hiring 16, 4 new
HQ: San Francisco, United States · MVNO · 501-1000 employees · Est. 2020 · Startup · Trust A · Hiring 16, 4 new
Gigs is an API-first Telecom-as-a-Service (TaaS) platform headquartered in San Francisco, California. Founded in 2020 and backed by Y Combinator, Google’s Gradient Ventures, and Ribbit Capital, the company enables tech platforms, neobanks, retail brands, and device manufacturers to launch, embed, and monetize their own branded mobile service plans without building native telecom infrastructure.
exponent.com · HQ: Menlo Park, United States · Engineering Services · 1001-5000 employees · Est. 1967 · Hiring 179, 12 new
HQ: Menlo Park, United States · Engineering Services · 1001-5000 employees · Est. 1967 · Hiring 179, 12 new
Exponent is a global engineering and scientific consulting firm that delivers multidisciplinary expertise to solve complex technical, health, and environmental challenges. Headquartered in Menlo Park, California, the company operates dozens of offices worldwide housing teams of scientists, engineers, and healthcare professionals. Its specialized advisory services span failure analysis, regulatory compliance, product safety, and risk management across diverse enterprise industries.
airbnb.com · HQ: San Francisco, United States · Travel Technology · Online Rental Platforms · Vacation Rentals · 1001-5000 employees · Est. 2008 · Trust B · Hiring 154, 22 new
HQ: San Francisco, United States · Travel Technology · Online Rental Platforms · Vacation Rentals · 1001-5000 employees · Est. 2008 · Trust B · Hiring 154, 22 new
Airbnb is an American travel company founded in San Francisco in 2008 that runs a global marketplace for short and long-term stays in homes rather than hotels. Hosts list rooms, apartments and houses across more than two hundred countries while the platform handles search, identity verification, payments, insurance cover and dispute resolution, taking a fee from both sides of each booking. Listed on Nasdaq since 2020, the company has expanded beyond accommodation into curated Experiences and Services such as chefs, training and spa treatments, positioning itself as a broader travel and hosting platform.
wearefintel.com · HQ: Huddersfield, United Kingdom · RegTech, AML & Compliance · Financial Data & Market Intelligence · Financial Software & Embedded Finance · 51-200 employees · Hiring 18, 2 new
HQ: Huddersfield, United Kingdom · RegTech, AML & Compliance · Financial Data & Market Intelligence · Financial Software & Embedded Finance · 51-200 employees · Hiring 18, 2 new
Fintel is a British fintech and support services group serving the UK retail financial services sector, including financial advisers, product providers and distributors. Its businesses include SimplyBiz and the product ratings and research brand Defaqto, and it hires marketing, product, business development and IT support staff. The company is headquartered in Huddersfield, United Kingdom.
