Senior Full-Stack Engineer (Fintech) - Remote | $65,000 USD/year

Senior Full-Stack Engineer (Fintech) Remote | $65,000 USD/year
Company:TheOneGate

Join us at TheOneGate, a fast-growing fintech startup revolutionising banking and payment integrations. We're building a secure, scalable, full-stack platform powering real-time financial services. We're hiring the core team to lead this transformation.

As a Senior Full-Stack Engineer, you'll play a key role in modernising our microservices architecture, improving performance, and building new banking features. This is a high-impact role where you'll shape technical decisions and mentor future team members.

Why Join Us?

• Fully remote: Work from anywhere with a flexible schedule.

• Modern tech stack: TypeScript, Vue.js, React, Node.js, Vite, Docker, CI/CD, and more.

• Supportive culture: Collaborative, engineering-led environment with a strong focus on code quality and security.

• Be a founding engineer: We're transitioning from third-party vendors to an in-house teamyoull be one of our first engineering hires.

Your Day-to-Day

• Build full-stack features with Vue.js/React and Node.js

• Migrate services to Node.js v22 and TypeScript

• Refactor legacy code to use modern frameworks and tooling (Vite, esbuild)

• Design and maintain shared component libraries

• Enhance system performance, test coverage, and reliability

• Collaborate with DevOps on CI/CD and containerisation

• Mentor junior engineers and document best practices

You Bring

• 58+ years in software development; 23 years in a senior/full-stack role

• Strong experience with Vue.js and React

• Deep JavaScript/TypeScript knowledge

• Proficiency in CSS (Tailwind, Bootstrap)

• Backend experience with Node.js and REST APIs

• Familiarity with microservices, Docker, and CI/CD

• Solid testing experience (Jest, Mocha, etc.)

Nice to have:

• Fintech, payment systems or secure coding experience

• Redis, WebSockets, or real-time system knowledge

• Familiarity with monorepos, Swagger/OpenAPI, and compliance (PCI, GDPR)

Security-First Mindset

Our platform handles sensitive financial datasecurity and compliance are central to everything we build.

What You'll Work On

• 15+ microservices (Node.js + NATS)

• Admin dashboards, customer portals, API gateways with WebSocket support

• Real-time reporting, fraud detection, secure wallet features, and more

Salary: $65,000 USD/year
Location: Fully Remote
Start Date: ASAP

Apply now and help shape the future of fintech with us. Send your CV and any relevant projects or GitHub links.