Frontend Developer jobs in London hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $189,176/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
coralogix.com · HQ: Tel Aviv, Israel · Security Operations · Log Management & Analytics · Observability & APM · Est. 2014 · Startup · Hiring 56, 3 new
HQ: Tel Aviv, Israel · Security Operations · Log Management & Analytics · Observability & APM · Est. 2014 · Startup · Hiring 56, 3 new
Coralogix is an observability company founded in 2014 and headquartered in Tel Aviv that offers a telemetry lake platform for ingesting, analysing and storing logs, metrics, traces and security data. Its platform processes data in a streaming pipeline before indexing, keeps it in the customer's own cloud storage and adds APM, real user monitoring, SIEM and AI observability modules with more than 300 integrations, and Gartner named it a Leader in its Magic Quadrant for Observability Platforms. It has offices in Ramat Gan, Boston, Plano, London, San Francisco, Gurgaon and Bucharest and hires software engineers, solution engineers, technical account managers and enterprise sales staff.
Acre is a London mortgage technology company founded in 2017 that builds the software brokers use to run a case from first meeting to completion. Its platform combines client records, product sourcing, compliance evidence and lender submission in one workflow rather than the several disconnected systems the sector traditionally used. The company sells to mortgage networks and directly authorised advisers across the United Kingdom.
plentific.com · HQ: London, United Kingdom · PropTech · Property Management · Real Estate · Est. 2013 · Startup · Hiring 19
HQ: London, United Kingdom · PropTech · Property Management · Real Estate · Est. 2013 · Startup · Hiring 19
Plentific is a London company founded in 2013 that runs a property maintenance marketplace and management platform. Housing associations, councils and landlords use it to dispatch repairs to a vetted contractor network with live tracking. The company operates in Britain, Germany and the United States.
bjak.my · HQ: Petaling Jaya, Malaysia · InsurTech · Financial Comparison & Loan Marketplaces · 5000+ employees · Est. 2015 · Trust B · Hiring 1844, 22 new
HQ: Petaling Jaya, Malaysia · InsurTech · Financial Comparison & Loan Marketplaces · 5000+ employees · Est. 2015 · Trust B · Hiring 1844, 22 new
Bjak is a Malaysian insurance technology company founded in 2015 that operates the largest insurance comparison site in Southeast Asia, letting consumers compare and buy motor and travel cover online. It has extended beyond comparison into insurance distribution technology, claims processing and a broader financial services platform, and it develops much of its own infrastructure in house including document processing and pricing systems. Headquartered in Petaling Jaya near Kuala Lumpur, it operates across Malaysia, Thailand, Taiwan and other regional markets and remains privately held and profitable.
motorway.co.uk · HQ: London, United Kingdom · Marketplaces · 201-500 employees · Est. 2017 · Startup · Hiring 14, 1 new
HQ: London, United Kingdom · Marketplaces · 201-500 employees · Est. 2017 · Startup · Hiring 14, 1 new
Motorway is an online car-selling marketplace in the United Kingdom where private sellers list their vehicles and a network of more than 8,000 verified dealers bid on them in daily auctions. The service is free for sellers, with home collection and payment arranged through Motorway, while dealers pay fees to buy stock. The company was founded in 2017. The company is headquartered in London, England, United Kingdom.
speechmatics.com · HQ: Cambridge, United Kingdom · Machine Learning · Speech & Audio AI · 201-500 employees · Est. 2006 · Hiring 12
HQ: Cambridge, United Kingdom · Machine Learning · Speech & Audio AI · 201-500 employees · Est. 2006 · Hiring 12
Speechmatics is a British company founded in 2006 that builds speech recognition designed to work across accents and dialects. It trains largely with self-supervised learning on unlabelled audio, which improved accuracy for speakers that mainstream systems transcribe poorly. Its engine is licensed by broadcasters, contact centres and software vendors and runs in the cloud or on-premise.
talan.com · HQ: Paris, France · AI Consulting & Integration · Management Consulting · IT Consulting & Digital Transformation · 1001-5000 employees · Est. 2002 · IT services · Trust B · Hiring 338, 27 new
HQ: Paris, France · AI Consulting & Integration · Management Consulting · IT Consulting & Digital Transformation · 1001-5000 employees · Est. 2002 · IT services · Trust B · Hiring 338, 27 new
Talan is a French technology and management consultancy founded in 2002 that advises large organisations on data, cloud, artificial intelligence and business transformation. It works mainly with banks, insurers, public sector bodies, energy companies and industrial groups, combining strategy consulting with hands-on engineering through practices covering data platforms, distributed ledger technology, enterprise applications and cybersecurity. Headquartered in Paris, the firm has grown quickly through acquisitions across Europe, North America and the Middle East and now employs several thousand consultants.
londonstockexchange.com · HQ: London, United Kingdom · Financial Services · Financial Data & Market Intelligence · Stock Exchanges & Market Infrastructure · 1001-5000 employees · Trust B · Hiring 69, 7 new
HQ: London, United Kingdom · Financial Services · Financial Data & Market Intelligence · Stock Exchanges & Market Infrastructure · 1001-5000 employees · Trust B · Hiring 69, 7 new
Headquartered in London, United Kingdom, the London Stock Exchange is one of the world's oldest and most prominent financial exchanges. It provides international capital markets, premier listing venues such as the Main Market and AIM, and electronic trading infrastructure for equities, bonds, and exchange-traded funds. As a core subsidiary of the London Stock Exchange Group, it connects global issuers with investors to facilitate efficient capital formation, market liquidity, and economic growth.
seamflow.com · HQ: London, United Kingdom · Manufacturing & Industrial Software · Testing, Inspection & Certification · 1-10 employees · Est. 2025 · Startup · Trust B · Hiring 7
HQ: London, United Kingdom · Manufacturing & Industrial Software · Testing, Inspection & Certification · 1-10 employees · Est. 2025 · Startup · Trust B · Hiring 7
Seamflow is the AI-native operating system for testing, inspection, and certification (TIC) organizations. Automate MDR technical file reviews, notified body workflows, and certification processes — turning months into hours.
perk.com · HQ: London, United Kingdom · Travel Technology · Business Travel · 1001-5000 employees · Est. 2015 · Trust A · Hiring 116, 11 new
HQ: London, United Kingdom · Travel Technology · Business Travel · 1001-5000 employees · Est. 2015 · Trust A · Hiring 116, 11 new
Perk (formerly TravelPerk) is an AI-native travel and spend management platform that unifies corporate travel booking, expense tracking, and invoice processing into a single ecosystem. Headquartered in London and Boston, the corporate technology unicorn serves thousands of enterprise clients globally with tools for 24/7 travel support, automated policy enforcement, and real-time expense reconciliation. By automating manual administrative tasks and integrating with major ERPs, the platform helps organizations save time and maintain full visibility over corporate expenditures.
aave.com · HQ: London, United Kingdom · Cryptocurrencies · DeFi · 11-50 employees · Est. 2017 · Startup · Trust B · Hiring 13, 1 new
HQ: London, United Kingdom · Cryptocurrencies · DeFi · 11-50 employees · Est. 2017 · Startup · Trust B · Hiring 13, 1 new
Aave is a decentralised lending protocol, developed by the London-based company Avara, that lets users supply crypto assets to earn yield and borrow against them without an intermediary. Started in 2017 as the peer-to-peer lender ETHLend and relaunched under its current name in 2018, the protocol pioneered variable and stable interest rate markets, flash loans and cross-chain liquidity pools. Governance sits with holders of the AAVE token, and the wider Avara portfolio now also includes the GHO stablecoin, the Lens social protocol and consumer wallet products.
jpmorganchase.com · HQ: New York, United States · Wealth Management & Financial Advisors · Asset Management & Funds · Investment Banking & M&A Advisory · Commercial & Retail Banks · 5000+ employees · Est. 1799 · Trust A · Hiring 3515, 169 new
HQ: New York, United States · Wealth Management & Financial Advisors · Asset Management & Funds · Investment Banking & M&A Advisory · Commercial & Retail Banks · 5000+ employees · Est. 1799 · Trust A · Hiring 3515, 169 new
JPMorganChase is the largest bank in the United States by assets and one of the most systemically important financial institutions in the world, with a lineage running back through more than a thousand predecessor firms to the 1799 founding of the Bank of the Manhattan Company. It combines a dominant investment bank and markets business with Chase, the largest retail banking franchise in America, plus commercial banking and asset and wealth management. Headquartered in New York, the group is unusual among banks for the scale of its technology spending, running one of the largest engineering organisations of any financial institution and deploying its own internal AI platform across the firm.
clearstreet.io · HQ: New York, United States · Stock Exchanges & Market Infrastructure · Online Brokerage & Trading Platforms · 501-1000 employees · Est. 2018 · Startup · Trust B · Hiring 46, 2 new
HQ: New York, United States · Stock Exchanges & Market Infrastructure · Online Brokerage & Trading Platforms · 501-1000 employees · Est. 2018 · Startup · Trust B · Hiring 46, 2 new
Clear Street is a financial technology and prime brokerage firm that provides a cloud-native capital markets platform for institutional and sophisticated active investors. The company offers an integrated suite of services, including prime brokerage, clearing, settlement, securities lending, low-latency execution, and API-driven trading infrastructure across equities, options, and digital assets. Headquartered in New York, United States, the enterprise serves hedge funds, asset managers, broker-dealers, and active individual traders globally.
voodoo.io · HQ: Paris, France · Social Networks · Game Development · Mobile Games · 501-1000 employees · Est. 2013 · Trust B · Hiring 82
HQ: Paris, France · Social Networks · Game Development · Mobile Games · 501-1000 employees · Est. 2013 · Trust B · Hiring 82
Voodoo is a French mobile gaming and consumer applications company founded in 2013 that built its business on hyper-casual games, titles simple enough to understand in seconds and monetised almost entirely through advertising rather than purchases. As advertising costs rose it moved deliberately into hybrid-casual and subscription applications, acquiring the social network BeReal in 2024 and building a portfolio of utility and dating apps alongside the games. Headquartered in Paris and backed by Tencent and Goldman Sachs, it reports billions of downloads and is one of the largest mobile publishers in the world by install volume.
Senior · 5+ years exp · Barcelona · Madrid · Warsaw · Tallinn · Helsinki · Remote (Germany, United Kingdom, Finland, Italy, Netherlands) · Full-Time · Senior · English
comand.ai · HQ: Paris, France · Military · C4ISR · 51-200 employees · Est. 2023 · Hiring 9
HQ: Paris, France · Military · C4ISR · 51-200 employees · Est. 2023 · Hiring 9
Comand AI builds artificial intelligence decision support for military command and control. Founded in 2023 in Paris, it applies planning and simulation models to battlefield coordination problems. The company works with European armed forces on next-generation command systems.
tussell.com · HQ: London, United Kingdom · Market Research · 11-50 employees · Est. 2015 · Startup · Hiring 1
HQ: London, United Kingdom · Market Research · 11-50 employees · Est. 2015 · Startup · Hiring 1
Tussell is a London data company founded in 2015 that tracks public sector procurement in the United Kingdom. Its database records tenders, contracts and supplier spending so businesses and analysts can see where government money goes. The company's research is widely cited in coverage of public contracting.
checkout.com · HQ: London, United Kingdom · Payment Processing & Gateways · 1001-5000 employees · Est. 2012 · Trust A · Hiring 126, 15 new
HQ: London, United Kingdom · Payment Processing & Gateways · 1001-5000 employees · Est. 2012 · Trust A · Hiring 126, 15 new
Checkout.com is a British payments company founded in 2012 that processes card and alternative payments for large digital merchants, and it competes by building its own connections to schemes and acquirers rather than reselling another processor's infrastructure. That vertical integration is the basis of its pitch on authorisation rates: a payment that fails for a technical reason is lost revenue, and controlling the whole path lets it retry and route more intelligently. Headquartered in London, it works with merchants including Netflix, Sony and eBay, and it has expanded into stablecoin settlement alongside conventional card processing.
encord.com · HQ: London, United Kingdom · MLOps · AI Training Data & Annotation · 201-500 employees · Est. 2020 · Startup · Hiring 44
HQ: London, United Kingdom · MLOps · AI Training Data & Annotation · 201-500 employees · Est. 2020 · Startup · Hiring 44
Encord is a data development platform for artificial intelligence that helps teams curate, annotate and evaluate image, video, audio, text and sensor data used to train and test models. Its software is used by physical AI, robotics, medical imaging and enterprise teams for pre-training, post-training and model evaluation workflows. Founded in 2020, the company has offices in London, San Francisco and New York and is headquartered in London, United Kingdom.
omnea.co · HQ: London, United Kingdom · Procurement & Spend Management · 1001-5000 employees · Est. 2022 · Trust B · Hiring 70, 1 new
HQ: London, United Kingdom · Procurement & Spend Management · 1001-5000 employees · Est. 2022 · Trust B · Hiring 70, 1 new
Omnea is a London-based software company that builds a procurement orchestration platform for managing third-party spend. Its product routes purchase requests, approvals, supplier onboarding and risk reviews through one workflow connecting finance, legal, security and procurement teams, replacing processes scattered across email and spreadsheets at mid-sized and enterprise customers. Founded in 2022, it has sales teams in New York, Melbourne and Toronto and is headquartered in London, England, United Kingdom.
sambanova.ai · HQ: Palo Alto, United States · LLM & Generative AI · Servers & Data Center Hardware · AI Compute & Inference · AI Chips & Accelerators · Processors, MCUs & AI Chips · 1001-5000 employees · Est. 2017 · Trust A · Hiring 68, 11 new
HQ: Palo Alto, United States · LLM & Generative AI · Servers & Data Center Hardware · AI Compute & Inference · AI Chips & Accelerators · Processors, MCUs & AI Chips · 1001-5000 employees · Est. 2017 · Trust A · Hiring 68, 11 new
SambaNova Systems is an American artificial intelligence company founded in 2017 by Stanford professors Kunle Olukotun and Christopher Re together with former Oracle executive Rodrigo Liang. It designs the Reconfigurable Dataflow Unit, a processor whose datapath is configured to match a model's computation graph rather than executing fixed instructions, and pairs it with a three-tier memory system that keeps very large models resident. Headquartered in Palo Alto, California, the company sells complete systems and a hosted cloud service to enterprises and governments that want to run frontier open models on their own terms rather than through a public model provider.
