Senior Backend Software Engineer (Ruby on Rails)

SORTLIST SA

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profile Job Location:

Wavre - Belgium

profile Monthly Salary: Not Disclosed
Posted on: 21 hours ago
Vacancies: 1 Vacancy

Job Summary

About Sortlist

At Sortlist we connect businesses with the right marketing and creative agencies.

Our mission is to help teams make better decisions faster by combining technology data and human expertise.

Were a fast-moving product-led company with a strong engineering culture built around autonomy technical excellence and impact.

Your Role

As a Senior Backend Software Engineer youll be a cornerstone of one of our two cross-functional tribes helping us evolve our Ruby on Rails-based platform and shape the future of B2B matchmaking.

This role goes beyond writing code youll act as a technical leader bringing product thinking architectural clarity and operational excellence. Youll help guide technical direction ensure long-term maintainability and mentor peers while staying close to the product and user problems that drive our roadmap.

What Youll Do

1. Own and Deliver Impact

  • Solve real problems that create the most value for users and the business.
  • Design and implement backend solutions balancing performance simplicity and scalability.
  • Make pragmatic trade-offs whether through code configuration or process.

2. Lead by Example

  • Promote clean architecture robust testing and clear documentation.
  • Elevate our engineering standards around code reviews CI/CD observability and performance monitoring.
  • Help your team make sound informed technical decisions.
  • Embrace AI as part of your daily routine

3. Operate What You Build

  • Own the full lifecycle: from design to deployment to monitoring in production.
  • Improve reliability developer experience and runtime performance.
  • Participate in incident reviews and contribute to a culture of operational excellence.

4. Mentor and Collaborate

  • Coach and empower medior engineers through pairing feedback and leadership.
  • Collaborate closely with your Product Manager Product Designer to shape bets from concept to delivery.
  • Foster a culture of ownership curiosity and psychological safety.

Our Tech Stack

We operate a modern stack built for developer happiness scalability and simplicity:

  • Backend: Ruby on Rails 7 (API-only)
  • Frontend: React /
  • Databases: PostgreSQL Google BigQuery
  • Infrastructure: Kubernetes AWS Terraform Docker
  • Observability: DataDog Sentry structured logs
  • CI/CD: GitHub Actions

Youll have space to influence and evolve this stack we value engineers who care deeply about developer productivity and maintainable architecture.

What Were Looking For

  • 5 years of experience building web applications (ideally with Ruby on Rails).
  • Solid understanding of web architecture scalability and database design.
  • Experience operating apps in production logging monitoring debugging optimizing.
  • A strong ownership mindset you care about maintainable observable and resilient systems.
  • Collaborative spirit and comfort working in cross-functional teams.
  • Balance between pragmatism and perfectionism knowing when to polish and when to ship.
  • Fluent in English and French (our working languages).

Bonus points for:

Mentoring experience or technical leadership.

Cloud infrastructure (AWS) and IaC tools (Terraform).

Experience with distributed systems or event-driven architecture.

What We Offer

  • Modern equipment: MacBook or high-end Linux setup your choice.
  • Hybrid work: 2 days/week of in-office collaboration in Wavre 3 days remote flexible for trips or family needs.
  • Autonomy: Engineers at Sortlist are trusted to make real technical decisions.
  • Learning budget: 1000/year for courses conferences and growth.
  • Competitive benefits: Meal vouchers mobility budget or company car health insurance progressive holidays and net allowances.
  • Real work-life balance: No weekend pings no on-call grind. Rest is valued.
  • Team culture: Tight-knit humble and supportive. We celebrate learning and ownership over hierarchy.

Why Join Sortlist

Youll be joining a company that believes great products come from small empowered teams. We value clarity over control impact over activity and learning over perfection.

If youre passionate about building elegant scalable systems that make a difference and you want to work where engineering excellence meets real product impact wed love to meet you.

Apply now and lets build something meaningful together.

About SortlistAt Sortlist we connect businesses with the right marketing and creative agencies.Our mission is to help teams make better decisions faster by combining technology data and human expertise.Were a fast-moving product-led company with a strong engineering culture built around autonomy te...
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Key Skills

  • Spring
  • .NET
  • C/C++
  • Go
  • React
  • OOP
  • C#
  • AWS
  • Data Structures
  • Software Development
  • Java
  • Distributed Systems