Blockchain.ai is a financial technology company based in San Francisco, California, and was founded in 2023. The company provides a real-time cryptocurrency trading and blockchain analytics platform that offers token tracking, wallet monitoring, liquidity pool data, and AI-powered market intelligence. It operates globally, supporting decentralized exchange activity and one-click swaps across major networks including Ethereum, Solana, and Polygon for active crypto investors and researchers.
HQ: San Francisco, United States • DeFi • Financial AI • Artificial Intelligence • Blockchain Analytics • Crypto Exchanges • Blockchain & Crypto • Est. 2023
≈ $12k – $147k per year (Estimated) • Junior • 2+ years exp • Remote/Hybrid (London, United Kingdom) • PhD • Full-Time • Junior
JavaScript
TypeScript
AI/ML
Cursor
Frontend
Next.js
React.js
styled-components
Cybersecurity
GDPR
Reactive Markets is a financial infrastructure company that provides ultra-low-latency connectivity and execution for institutional trading across FX, equities and other asset classes. Its network connects clients to 35+ liquidity providers with deterministic sub-50 microsecond end-to-end latency, accessible via a single API, UI, or integrations with EMS/OMS/pricing engines. The platform is engineered for bilateral trading, systematic and manual strategies, and offers real-time latency reporting, analytics, global deployment (New York, London, Singapore), and FCA-regulated services for professional market participants.
London • FinTech • Financial Services • Capital Markets • Est. 2019
≈ $67k – $200k per year (Estimated) • Lead • 5+ years exp • Remote (United Kingdom) • Visa sponsorship • Full-Time • Staff
C++
Go
JavaScript
Rust
TypeScript
AI/ML
Claude
Frontend
React.js
DevOps
WebSockets
≈ $55k – $181k per year (Estimated) • Senior • Remote (United Kingdom) • Visa sponsorship • Full-Time • Senior
C++
Go
JavaScript
Python
Rust
TypeScript
AI/ML
Claude
Frontend
React.js
DevOps
WebSockets
Git
SLI/SLO/SLA
Experian is a global information services and data analytics company best known as one of the "Big Three" credit reporting agencies (alongside Equifax and TransUnion). Headquartered in Dublin, Ireland, with operational centers in the US, UK, and Brazil, the firm collects and manages credit and financial data on hundreds of millions of consumers and businesses worldwide.
HQ: Dublin, Ireland • Cybersecurity • Fraud Detection • Financial Services • Data & Analytics • 5000+ employees
≈ $83k – $215k per year (Estimated) • Staff+ • Remote/Hybrid (Nottingham, United Kingdom) • Full-Time • Staff
TypeScript
AI/ML
Prompt Engineering
Recommender Systems
DevOps
CI/CD
Amazon ECS
Analytics
A/B Testing
Leidos is a defense, intelligence, civil, and health information technology enterprise. Headquartered in Reston, Virginia, the Fortune 500 company (NYSE: LDOS) operates as one of the primary IT, scientific research, and systems integration contractors for the U.S. federal government, allied defense agencies, and commercial infrastructure entities.
HQ: Reston, United States • Government • Cybersecurity • Military • 5000+ employees • Est. 2013
$83k – $107k per year • Remote/Hybrid (Farnborough, United Kingdom) • Full-Time
Java
TypeScript
JavaScript
Python
Frontend
Angular
DevOps
Bamboo
Bitbucket
CI/CD
Management
Jira
State Street is a major American financial services and bank holding company headquartered in Boston, Massachusetts. As one of the world's largest custodian banks and asset managers, it provides comprehensive asset servicing, fund administration, foreign exchange, and investment management through its State Street Global Advisors division.
HQ: Boston, United States • Financial Services • Banking • Asset Management • 1001-5000 employees
In office (London, United Kingdom) • Full-Time
JavaScript
TypeScript
Node JS
Frontend
Angular
React.js
Vue.js
DevOps
Rest API
CI/CD
Mimica watches you work and learns to automate your most repetitive tasks. Its research and tech are backed by Entrepreneur First, Europe's most successful accelerator and seed fund.
HQ: London, United Kingdom • AI Agents • Software • Business Process Automation (BPA) • 201-500 employees
≈ $66k – $197k per year (Estimated) • Equity • Lead • 8+ years exp • Buenos Aires • Berlin • Amsterdam • Prague • Barcelona • Remote (Germany, United Kingdom, Argentina, Brazil, Czech Republic) • Full-Time • Staff
JavaScript
AI/ML
LLM
Frontend
React.js
Amplemarket combines buying signal data with artificial intelligence copywriting to run outbound sales campaigns. Founded in 2018 by Portuguese engineers, it covers prospecting, sequencing and deliverability in one system. Its Duo agents research accounts and draft personalised outreach automatically.
HQ: San Francisco, United States • Code Intelligence • Branding • Artificial Intelligence • Est. 2018
Equity • Remote (LATAM, Europe, United States) • Cofounder
JavaScript
Ruby
Ruby
Ruby on Rails
Databases
ElasticSearch
PostgreSQL
Redis
AI/ML
NLP
Frontend
React.js
Trellix is a global cybersecurity company headquartered in Milpitas, California, and was established in 2022 following the merger of McAfee Enterprise and FireEye. The company provides an open and native extended detection and response (XDR) platform that integrates endpoint, cloud, network, and data security to protect organizations from advanced cyber threats. Operating as a private entity under Symphony Technology Group, it serves thousands of enterprise and government customers worldwide through a comprehensive portfolio of automated security solutions.
HQ: Milpitas, United States • Cybersecurity AI • Network Security • Cloud Security • Endpoint Security • Threat Intelligence • Artificial Intelligence • Cybersecurity • 501-1000 employees • Est. 2022
≈ $54k – $176k per year (Estimated) • Senior • 5+ years exp • Remote/Hybrid (United Kingdom) • Full-Time • Senior
JavaScript
TypeScript
Frontend
Angular
Next.js
React.js
DevOps
CI/CD
Jenkins
GitHub
Cybersecurity
Zero Trust
Management
Jira
QA
Cypress
Jest
Sensor Tower is a market intelligence and analytics company that provides data-driven insights into the digital app ecosystem and digital advertising landscapes. Its platform offers mobile market metrics, including app store optimization, keyword tracking, download and revenue estimates, and user retention analytics for developers, marketers, and investors. By delivering deep visibility into competitive trends and audience behavior, it enables businesses to optimize their digital strategies and drive user growth across global app markets.
HQ: San Francisco, United States • Software • Sales & Marketing • Mobile App Development • Data & Analytics • Est. 2013
≈ $54k – $176k per year (Estimated) • Senior • 4+ years exp • In office (London, United Kingdom) • Full-Time • Senior
JavaScript
TypeScript
Ruby
Ruby
Ruby on Rails
Sidekiq
Databases
ClickHouse
PostgreSQL
Frontend
Next.js
React Router
React.js
Redux
Zustand
Angular
Highcharts
Mobile
State Management
DevOps
GitHub
QA
Jest
Playwright
Yapily is a London open banking company founded in 2017 that connects businesses to bank data and payment initiation across Europe. Its infrastructure exposes hundreds of bank interfaces through a single technical integration with no consumer facing product of its own. The company serves lenders, accounting platforms and payment providers building on open banking rules.
HQ: London, United Kingdom • Banking • FinTech • Financial Services • Est. 2017
≈ $65k – $193k per year (Estimated) • Lead • Remote/Hybrid (London, United Kingdom) • Full-Time • Principal
JavaScript
Node JS
AI/ML
AI Agents
Frontend
React.js
Vite
QA
Playwright
nPlan is a London company founded in 2017 that forecasts construction schedule risk with machine learning. Its models are trained on hundreds of thousands of completed project schedules to predict where delays will actually occur. The company works with infrastructure owners and contractors on large capital programmes.
HQ: London, United Kingdom • Data Centers • Predictive Analytics • Artificial Intelligence • Est. 2017
≈ $55k – $179k per year (Estimated) • Senior • 5+ years exp • Remote/Hybrid (London, United Kingdom) • Full-Time • Senior
JavaScript
TypeScript
AI/ML
AI Agents
Frontend
GraphQL
React.js
Radix UI
D3.js
Apollo Client
shadcn/ui
Tailwind CSS
visx
Vite
Zustand
DevOps
GCP
GitHub Actions
GitHub
Robotics
Apollo
QA
Playwright
Vitest
Carrier creates with purpose to enhance lives, support a healthier planet, & build a better future for everyone. Enhancing the lives we live and the world we share.
HQ: Palm Beach Gardens, United States • Artificial Intelligence • Smart Building & Cities • Data & Analytics • Information Technology • Supply Chain • Hardware • Est. 1939
≈ $52k – $170k per year (Estimated) • Senior • Remote/Hybrid (London, United Kingdom) • Full-Time • Senior
Python
TypeScript
JavaScript
Frontend
GraphQL
React.js
Tailwind CSS
Providing eCommerce businesses with fairer, faster, and more flexible funding. Our mission at Wayflyer is to support the ambition of the eCommerce businesses we work with. We do this by solving the toughest problems in eCommerce, giving founders ...
New York • Dublin • Charlotte • London • Berlin • Commerce • Est. 2019
≈ $55k – $181k per year (Estimated) • Senior • 5+ years exp • Remote (Europe) • Bachelor's Degree • Full-Time • Senior
JavaScript
Python
TypeScript
Python
Django
Frontend
React.js
Storybook
DevOps
CI/CD
GitHub Actions
GitHub
QA
Playwright
Vitest
Firstup is the leading employee communication platform that helps organizations connect with their workforce, improve employee engagement, and drive business results. With Firstup, you can: Create and distribute engaging content to your employees Track and measure the impact of your communication programs Build a culture of open communication and transparency Firstup is used by some of the world's largest and most successful organizations, including McDonald's, Marriott, and Nestle. Firstup is a great way to keep your employees informed, engaged, and motivated.
Chicago • Communication & Collaboration • Professional Services • Human Resources
≈ $53k – $173k per year (Estimated) • Senior • 5+ years exp • Remote (United Kingdom) • Bachelor's Degree • Full-Time • Senior
TypeScript
JavaScript
Node JS
Ruby
Ruby
Ruby on Rails
AI/ML
Claude
Copilot
Frontend
React.js
Vite
Webpack
DevOps
GitHub
AWS
Docker
Kubernetes
QA
Cypress
Jest
Playwright
Three is a prominent British telecommunications company that provides mobile network and broadband services to millions of customers across the United Kingdom. Originally launched in 2003 as the country's first commercial 3G-only network, it has evolved into a major provider of 4G and high-speed 5G connectivity. Now operating as a subsidiary of the Vodafone Group, the company focuses on delivering robust digital infrastructure, mobile telephony, and data solutions to both consumer and enterprise markets.
Slough • Harare • Bath • Aberdeen • Glasgow • Broadband • Telecommunications • Mobile Networks
Remote/Hybrid (Newbury, United Kingdom) • Full-Time • Middle
TransPerfect is the world’s largest provider of language services and AI technology solutions, headquartered in New York City, New York. Founded in 1992 by Phil Shawe and Liz Elting, the company operates across more than 100 cities on six continents with over 10,000 employees.
HQ: New York, United States • Professional Services • Translation Services • 1001-5000 employees • Est. 1992
≈ $53k – $173k per year (Estimated) • Senior • 5+ years exp • In office (London, United Kingdom) • Full-Time • Senior
JavaScript
TypeScript
Frontend
Angular
React.js
Vue.js
Design
Figma
Oscilar is a risk management platform that focuses on fraud defense, credit underwriting, onboarding risk, and AML compliance for financial institutions. Through its advanced AI Risk Decisioning™, Oscilar enables organizations to make faster and more intelligent risk decisions, monitor customer journeys, and ensure regulatory compliance seamlessly. Oscilar's platform provides comprehensive analytics and proactive detection capabilities, tailored to meet the unique risk needs of banks, fintechs, and credit unions.
HQ: Palo Alto, United States • Financial Services • FinTech • Fraud Detection • Est. 2021
$76k – $110k per year • Equity • Staff+ • 8+ years exp • Remote (India, United Kingdom, Brazil, Canada, Poland) • Bachelor's Degree • Full-Time • Staff
JavaScript
TypeScript
Frontend
Babel
Rollup
Webpack
DevOps
CI/CD
Git
Rest API
GitHub
Version1 is a UK and Ireland-based digital transformation consultancy specializing in cloud services, enterprise application management, data analytics, and artificial intelligence solutions. Founded in Dublin in 1996, the firm helps public sector organizations and private enterprise clients modernize legacy IT infrastructure and accelerate digital initiatives. As a major partner for leading technology providers like Microsoft, AWS, and Oracle, the company delivers end-to-end technology implementation, software development, and managed services.
HQ: Dublin, Ireland • Information Technology • Cloud Computing • IT Consulting • 1001-5000 employees
≈ $16k – $91k per year (Estimated) • Middle • 3+ years exp • In office (Belfast, United Kingdom) • Full-Time • Senior
TypeScript
Databases
Snowflake
DevOps
AWS
Azure
CI/CD
≈ $37k – $121k per year (Estimated) • Senior • 10+ years exp • In office (Belfast, United Kingdom) • Full-Time • Senior
Java
Python
TypeScript
JavaScript
Databases
Snowflake
Frontend
Angular
Apollo Client
GraphQL
Next.js
Vue.js
React.js
Mobile
React Native
State Management
DevOps
AWS
CI/CD
Docker
QA
Jest
PeopleCert is a global leader in the assessment and certification of professional skills, partnering with multi-national organizations and government bodies to develop and deliver market leading exams.
Athens • Istanbul • Ankara • İzmir • Dushanbe • Vocational Education • Education • Skill Assessment
Athens • Remote (United Kingdom, Greece) • Bachelor's Degree • Full-Time • English
JavaScript
TypeScript
Frontend
Sass
Angular
React.js
Vue.js
DevOps
Git
Design
Figma
You own quality and test automation at Cashen. You will build the QA infrastructure from the ground up - automated test suites, CI integration, regression coverage, and release validation - for a platform where bugs have financial consequences. A missed edge case in a deal state transition or an interest accrual rounding error doesn't just degrade UX - it moves money incorrectly between institutional counterparties.
London • FinTech • Software • Quality Assurance
Middle • 3+ years exp • London • Remote (United Kingdom) • Full-Time • Middle
TypeScript
JavaScript
Frontend
React.js
Web3
DeFi
Solana
