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alteam

Junior Full-Stack Developer (Fintech)

Hybrid

London, United kingdom

Junior

Full Time

04-11-2025

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Skills

JavaScript TypeScript NoSQL MongoDB CI/CD Docker Version Control Problem-solving Architecture Databases git node.js AWS Agile JS Next.js React.js Express

Job Specifications

Kickstart Your Career with a Fast-Growing SaaS Startup!

Position: Junior Full-Stack Developer

Sector: Fintech / Entertainment

Start Date: Mid November

About Us

Alteam is more than just a tech company; we are a hub of innovation and talent. We empower developers, designers, and consultants through a community built on mentorship, collaboration, and hands-on learning. We work closely with startups and scale-ups to create agile, high-performing engineering teams — and we’re currently hiring on behalf of one of our clients, a fast-growing SaaS company operating at the intersection of fintech and entertainment.

The Role

We’re Looking For Two Junior Full-Stack Developers Eager To Grow, Learn, And Make An Impact. You’ll Start By Working Closely With Our Senior Engineers To

Solve production bugs
Contribute to QA and testing
Learn the platform architecture and codebase
Gradually take ownership of new features and full-stack projects

This is a fantastic opportunity for early-career engineers who want to level up quickly, gain exposure to modern technologies, and be mentored by experienced tech leads in a fast-paced, real-world environment.

Contract Details

Duration: Permanent, full-time position

Experience Required: Minimum 3 years of professional experience

Location: London (Hybrid)

Compensation: £45,000 – £50,000 per annum, depending on experience

Key Responsibilities

Investigate and fix production bugs
Support QA processes and write tests
Collaborate with senior engineers to improve code quality and performance
Build and maintain clean, reusable components
Gradually contribute to new feature development across the stack
Write clear technical documentation
Communicate effectively within a fast-paced agile team

Required Skills

**

JavaScript / TypeScript (3+ years)

Node.js and Express

React.js fundamentals

API integration and debugging

Familiarity with AWS or cloud environments

Git and version control best practices

Nice to Have

Experience with Next.js or modern JS frameworks

Understanding of automated testing

Basic knowledge of Docker and CI/CD

Exposure to NoSQL databases (MongoDB preferred)

Who You Are

You are curious and motivated to learn from experienced engineers, with a proactive, detail-oriented approach to problem-solving. You’re passionate about building reliable, scalable products and eager to grow quickly in a fast-paced, supportive startup environment.

Join Us

This is your chance to learn, grow, and build real-world impact alongside a talented team. If you’re a junior developer ready to take the next step in your career, we’d love to hear from you.

Apply now to join the Alteam team and start your journey toward becoming a mid-level full-stack engineer. NO RECRUITERS OR AGENCIES. Direct applicants or referrals from our trusted partners only.

Yoann, CEO at Alteam

About the Company

Alteam connects founders and CEOs with high-impact fractional product experts and elastic teams on demand. Our platform offers the flexibility to solve challenges, scale efficiently and adapt as you grow - only paying for expertise when you need it. Our marketplace is designed to meet your needs, whether you're seeking a fractional CTO, seasoned advisors or specialised freelancers. Since 2021, Alteam (formerly YJCollective) has been a trusted partner for startups building the future. We've assisted companies like ESAI, Op... Know more