Senior Fullstack Engineer (Go/TypeScript/React)

Sytac; Amsterdam; Hybrid; EUR 60,000 - 80,000; Full time

Benefits offered by this job

Hybrid working setup

Competitive salary or freelance rate

Strong engineering culture focused on ownership and craftsmanship

Job summary

A leading technology consultancy in Amsterdam is seeking a Senior Full Stack Developer to enhance their engineering team. This hands-on position focuses on backend development using Go alongside frontend work with React and TypeScript. You will be tasked with building integrations, maintaining applications, and ensuring reliability in production. The role allows for a hybrid work setup, emphasizing ownership and quality across projects. Ideal candidates are expected to have strong problem-solving skills and a dedication to continuous learning.

Qualifications

• Strong backend development experience, preferably with Go (Golang).
• Solid frontend experience with React and TypeScript.
• Experience working with Python.
• Hands-on experience with Docker and modern application development.

Responsibilities

• Design, build, and maintain backend services using Go.
• Develop and maintain frontend components using React & TypeScript.
• Build integrations between internal platforms and applications.
• Take ownership of services in production with a build & run mindset.

Skills

Backend development in Go (Golang)

Frontend development in React and TypeScript

Python

Docker experience

IT security fundamentals

Unit testing

GitHub Actions

Jenkins

npm

Skaffold

Helm

Job description

Senior Full Stack Developer

At Sytac, we build high-performing engineering teams for leading organizations in the Netherlands and beyond. We combine a pragmatic, people-first culture with strong technical craftsmanship — giving engineers autonomy in real production environments, backed by a consultancy that invests in growth, community, and long-term partnerships.

For one of our highly regulated, technology-driven clients in the financial services domain, we’re looking for a Senior Full Stack Developer to strengthen a core engineering team. You’ll work on complex, business-critical applications with a strong focus on backend development, integrations, and platform reliability.

This is a hands‑on engineering role — not a lead or management position.

What you’ll do

• Design, build, and maintain backend services using Go (Golang)
• Develop and maintain frontend components using React & TypeScript
• Build integrations between internal platforms and applications
• Contribute to containerized application development using Docker
• Take ownership of services in production (build & run mindset)
• Write clean, testable code with a strong focus on stability and quality
• Collaborate closely within an agile, cross-functional team
• Actively contribute to code quality, documentation, and engineering standards

What we’re looking for

• Strong backend development experience, preferably with Go (Golang)
• Solid frontend experience with React and TypeScript
• Experience working with Python
• Hands‑on experience with Docker and modern application development
• Understanding of IT security fundamentals
• Comfortable writing unit tests and building reliable software
• Hands‑on experience with most of: GitHub Actions, Jenkins, Docker, npm, skaffold, helm
• Able to work independently within an existing toolchain
• Comfortable owning applications end-to-end in production

Ways of working

• Strong analytical and problem-solving skills
• Truly hands‑on developer (no lead/manager profile)
• Comfortable joining and contributing to an existing, complex codebase
• High sense of integrity and personal responsibility
• Curious mindset, continuously learning and adapting
• Team player: empathetic, collaborative, and open to diverse perspectives
• Feels at home in an agile environment and leads by example through code quality
• Office presence: ~60% onsite
• Way of working: Agile team
• Focus: Backend-heavy full-stack development & integrations

What we offer

• High-impact role on business-critical platforms
• Hybrid working setup in Amsterdam
• Competitive salary or freelance rate
• Strong engineering culture focused on ownership, quality, and craftsmanship
• Long-term collaboration with room for growth and learning

Seniority level

• Mid‑Senior level

Employment type

• Full-time

Job function

• Consulting, Information Technology, and Business Development

Industries

• Software Development, IT Services and IT Consulting, and IT System Custom Software Development

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