Senior Backend Engineer — Symfony, DDD & Scalable APIs

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

Benefits offered by this job

Flexible hybrid working

Collaborative team culture

Competitive salary and benefits

Job summary

A digital fitness content company in Amsterdam is seeking a Senior Backend Developer to architect and build backend services for their platform. The ideal candidate has over 5 years of experience, particularly with Symfony and API design. The role offers a flexible hybrid work setup, competitive salary, and a collaborative team culture.

Qualifications

• 5+ years of backend development experience, ideally with a strong focus on Symfony and PHP.
• Proven track record implementing Domain-Driven Design in real-world systems.
• Deep understanding of API design and backend architecture.

Responsibilities

• Architect and build backend services for digital fitness platform.
• Develop systems powered by custom CMS and Symfony-based platform.

Skills

Backend development

Symfony

API design

Domain-Driven Design

MySQL/PostgreSQL

Collaboration

Tools

Docker

CI/CD

AWS

GCP

Job description

About Funxtion

Funxtion is a digital fitness content company on a mission to empower fitness operators with scalable, personalized workout experiences. From boutique gyms to global chains, we help our partners deliver engaging digital fitness content through our custom-built platforms and integrations.

We’re a tight-knit, easy-going team that works hard, moves fast, and loves what we do. Whether we’re designing better APIs or planning our next team hangout, we stay focused on impact without taking ourselves too seriously.

The Role

We're looking for a Senior Backend Developer to help evolve the heart of our digital fitness platform. You’ll play a key role in architecting and building out backend services that deliver rich media, content, and user experiences — all powered by our custom CMS and Symfony-based platform. If you’re passionate about Domain-Driven Design, API development, and building systems that scale, we’d love to meet you.

What You Bring

• 5+ years of backend development experience, ideally with a strong focus on Symfony and PHP.

• Proven track record implementing DDD in real-world systems.

• Deep understanding of API design and backend architecture.

• Experience working with or maintaining a custom CMS.

• Solid grasp of relational databases (MySQL/PostgreSQL), ORMs, and caching strategies.

• A collaborative, proactive mindset — you enjoy working with others to solve big problems.

• Comfortable working in a hybrid setup (our office is in Amsterdam)

Bonus Points For

• Experience with Docker, CI/CD, or cloud infrastructure (AWS, GCP, etc.)

• Knowledge of fitness tech, media streaming, or content-heavy platforms.

What We Offer

• A collaborative, fun team culture with space for growth and ownership

• Flexible hybrid working (work from home + office)

• Impactful work — your code helps people around the world stay active and healthy

• Competitive salary and benefits