Full Stack Developer

EC Markets

. Build features end to end across React Native / Expo screens on iOS, Android, and web, Spring Boot API endpoints, and dependent integrations .

Posted 11/8/2026full-timeWroclaw • PolandMid-LevelSenior💰 €30,400 - €45,600 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development with a focus on React Native, Spring Boot, and TypeScript, while ensuring compliance with FCA and GDPR standards. Proficient in integrating third-party APIs and optimizing applications for diverse environments and devices.

Highest-signal resume keywords

React Native DevelopmentSpring Boot API DevelopmentTypeScript ProficiencySQL and PostgreSQL ExperienceAI-Assisted Development Tools

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

React NativeSpring BootTypeScriptSQLREST APIsGitCI/CDTest AutomationWebSocketsMaven

Soft Skills

CollaborationProblem-SolvingCommunication

Tools & Technologies

ExpoAWSMaestroDetoxREST Assured

Industry Keywords

Financial ServicesTradingBrokerageFintechRegulated Environment

Tech Stack

Tools & technologies

AndroidAWSiOSJavaJavaScriptMavenPostgresReactReact NativeSpringSpring BootSpringBootSQLTypeScript

About the role

Key responsibilities & impact

Build features end to end across React Native / Expo screens on iOS, Android, and web, Spring Boot API endpoints, and dependent integrations
Take work from refinement through code review and testing to production release
Participate in Scrum ceremonies: refinement, estimation, planning, review, and retrospective
Integrate third-party platforms for trading, custody, identity verification, payments, notifications, and market data
Implement retries, idempotency, webhook verification, and clear application error states
Write unit and integration tests and support QA with mobile UI and API automation
Optimize the app for older and lower-end devices and different screen sizes
Investigate and fix production issues using monitoring and error-tracking tools
Participate in the engineering support rota
Build securely with authentication, secrets handling, and data privacy aligned with FCA and GDPR requirements
Use AI coding tools and review, test, and explain every AI-assisted change in pull requests
Report to the Head of Technology

Requirements

What you’ll need

At least 4 years of professional software engineering experience across front end and back end
Production experience with React Native and TypeScript; Expo is a plus
Production back-end experience in Java with Spring Boot, REST APIs, and Maven
Solid SQL and relational database experience; PostgreSQL preferred
Experience integrating third-party REST APIs and webhooks in production
Git-based workflow with pull-request reviews and CI/CD
Experience releasing mobile apps through the App Store and Google Play
Confident, practical use of AI-assisted development tools, with sound judgement over their output
Professional English for daily work with colleagues across the Group
Degree in Computer Science, Software Engineering or a related field, or equivalent professional experience
4–7 years of hands-on software engineering experience
Financial services, trading, brokerage or fintech experience, ideally in a regulated environment
AWS, including containers, managed databases, serverless, and infrastructure as code
Real-time data, WebSockets, charting, and caching
js
Test automation tools such as Maestro, Detox, or REST Assured

Benefits

Comp & perks

Annual bonus: eligible for the Group bonus scheme
Pension & social security: employer contributions in line with statutory requirements
Supplementary health insurance
20 working days annual leave plus public holidays
Company-provided hardware
Annual learning and certification budget, including cloud and mobile development
Occasional travel to other Group offices, paid for by the company
Reasonable adjustments available at any stage of the recruitment process