Backend Engineer (Ruby on Rails)

Ruby Developer; Amsterdam; Hybrid; EUR 80,000 - 90,000; Full time

Benefits offered by this job

Relocation support

Visa sponsorship

30% ruling

Learning budget

Mentors & coaches

Alleo benefits budget

Bi-annual offsite

Job summary

SkillLab, Amsterdam-based, seeks a Backend Engineer to lead design, development, and scaling of a large-scale Ruby on Rails platform exposing a JSON API for a React frontend.

You will architect major features, optimize PostgreSQL, mentor teammates, and align technical roadmaps with product goals while delivering high-quality code and documentation.

Qualifications

• 10+ years of web development experience, with recent Ruby on Rails.
• Proven PostgreSQL optimization and complex query experience.
• Strong testing experience (minitest, webmock or similar).
• Expertise in backend tooling: Redis and Solr.
• Solid Git, Jira, and Agile practices.

Responsibilities

• Architectural Leadership: Lead the architecting and planning for major features, ensuring scalable, modular solutions.
• Platform Optimization: Drive error triage, debugging, and feature optimization for better performance.
• Mentorship & Quality: Elevate code quality through reviews and technical direction.
• Product Partnership: Translate business goals into clear technical roadmaps.
• Knowledge Sharing: Create documentation to transfer knowledge and reduce dependencies.

Skills

Ruby on Rails

Web development

Architecture leadership

Mentoring

Testing methodologies

Git/Jira/Agile

Problem solving

Tools

PostgreSQL

Redis

Solr

Docker

Kubernetes

Git

Jira

Job description

We are hiring a Backend Engineer who will lead the technical design, development, and scaling of a large-scale software platform built on Ruby on Rails, exposing a JSON API for a React front-end. This role requires architectural leadership, a commitment to code quality, and active mentorship of team members.

Responsibilities

• Architectural Leadership: Lead the architecting and planning for major features, ensuring solutions are scalable, modular, and align with the platform's long-term strategy.
• Platform Optimization: Drive error triaging, debugging, and feature optimization, focusing on enhancing PostgreSQL database performance and improving overall system scaling.
• Mentorship & Quality: Elevate team standards through high-quality code reviews, providing technical direction, and ensuring features are delivered with minimal QA rework.
• Product Partnership: Actively review and contribute to product requirements, translating strategic business goals into clear technical roadmaps.
• Knowledge Sharing: Create clear technical documentation to facilitate knowledge transfer and reduce organizational dependencies.

About SkillLab

At SkillLab, we envision a world where everyone has a pathway to employment. We enable and lead a radical change - a transition towards skill-based labor and education markets. Our AI-driven technology creates more inclusive and efficient markets by connecting people with jobs and education through the universal language of skills. SkillLab is working with employment and career services in 35+ countries and seeks to transform labor and education markets globally.

SkillLab’s innovative use of AI was recognised with awards like Google AI for Impact, UNESCO Top 10 uses of AI and the European Social Innovation Competition 2021, among other awards.

Skills

• 10+ years of web development experience. Most recent experience in Ruby on Rails.
• Proven experience with PostgreSQL and complex query optimization.
• Demonstrated expertise in testing methodologies (e.g., minitest, webmock or similar tools).
• Strong understanding of backend tooling: Redis and Solr.
• Strong grasp of git-based version control, Jira, and Agile software development practices.
• Proven ability to take the lead on architecture and planning for major features.
• Enthusiastic and effective in supporting and mentoring other developers.
• Excellent problem-solving and debugging skills.

Extra awesome

• Ability to read, understand, and contribute to the Typescript/React front-end.
• Experience in optimizing Docker-based builds.
• Experience with deploying Kubernetes (manual or via IaaC systems like FluxCD).

Salary & start-date

• We use a salary benchmark for the Dutch high-tech sector to set your salary based on your experience. We expect that the annual gross salary for the experience we are looking for ranges from 80k-90k Euro per year.
• We accept applications on a rolling basis, and we envision a start date in as soon as possible.

Benefits

• You will enjoy 25 paid vacation days per year (20 days as the statutory minimum holiday entitlement in the Netherlands plus 5 extra days from SkillLab).
• You can work flexibly from our office in Amsterdam and home within the Netherlands. You can also extend your holiday stay in a different country and work from abroad for a limited period of time.
• You will get an extensive relocation support to move to Amsterdam including visa sponsorship, 30% ruling application, your plane tickets, covered real estate agent fees, etc.
• You will have a personal learning budget to invest in your professional development.
• You will have access to mentors & coaches (SkillLab is part of the Google for Startups SDG accelerator).
• You will have access to a monthly flexible budget of benefits via Alleo app. You can spend this budget on a large selection of providers, ranging from gym memberships to bike subscriptions and online stores.
• You will join our bi-annual company offsite retreats in different locations like Belgium, the Netherlands etc.

What Else To Know

• This job description is intended to provide a general overview of the position and may be subject to change based on the organization's requirements and priorities.
• Get 4 tips for your job application at SkillLab: https://skilllab.io/en-us/news/skilllabjobapplication
• Read more about our compensation framework: https://skilllab.io/en-us/news/skilllab-compensation
• Learn more about SkillLab’s social life: https://skilllab.io/en-us/news/social-life-at-skilllab
• SkillLab is committed to diversity, equality and inclusion at the workplace. We welcome applications of candidates from all backgrounds. Read more about DEI: https://skilllab.io/en-us/news/diversity-equity-and-inclusion-at-skilllab