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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Ruby Backend Engineer with affinity for observability - **Company:** Hypofriend GmbH - **Location:** Berlin, Germany (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Amazon Cloudfront, Backup Devices, Bash Shell, Cascading Style Sheets (CSS), Cloud Computing Security, Relational Databases, Software Debugging, Failover, Github, Identity and Access Management, Python (Programming Language), Key Management, PostgreSQL, Node.Js, Performance Tuning, Ruby on Rails, Ruby, Datadog, Data Logging, Scripting, Rspec, Amazon Virtual Private Cloud (VPC), Backend, AWS ECS, Vue.js, Amazon Relational Database Service, Containerization, Kubernetes, Sentry, Graphql, Front End Software Development, Terraform, Serverless Computing, Docker, Service Stack - **Published:** August 16, 2026 - **Apply:** https://www.adzuna.de/details/5842673465 ## About the Role Individuals who like getting things done Excellent communication skills, able to work closely with backend engineers and product teams Eagerness to understand the systems end-to-end, from application code to the infrastructure it runs on Someone who is as comfortable writing infrastructure-as-code as they are debugging a production incident A pragmatic approach to reliability - building the right amount of resilience, focussing on the key building blocks and clean architecture Our technology stack ️ Backend * Ruby 4.0 (Rails 8.1) * PostgreSQL 16 * Serverless Ruby, Node.JS, Python ️ Frontend * Vue.js 3 * CSS3 (flex & friends) Infrastructure * AWS: ECS, Lambda, RDS, CloudFront * Terraform for infrastructure-as-code * CI/CD pipelines Testing & Reliability * RSpec * Monitoring & alerting tooling Requirements * Strong commercial experience with Ruby (min 4-5 years), ideally including Ruby on Rails 7/8 * RSpec experience * Good grasp of OO patterns * Sentry, GitHub and Datadog are your best friends * Hands-on production experience with Terraform for infrastructure-as-code * Working knowledge of AWS (ECS, Lambda, RDS, CloudFront, VPC networking, IAM) * Experience building and maintaining CI/CD pipelines * Solid understanding of observability: monitoring, logging, and alerting * Experience with containerization (Docker, ECS or Kubernetes) * Comfort with incident response: on-call rotations, postmortems, and root-cause analysis * Good grasp of RDBMS operations (PostgreSQL 16+) - backups, performance tuning, failover * A security-first mindset: familiarity with secrets management, least-privilege access, and cloud security best practices Nice to have * Experience with serverless Ruby, Node.JS architectures * Familiarity with GitHub Actions * Experience defining and tracking SLIs/SLOs/error budgets * Scripting/automation experience beyond Ruby (Bash, Python) * Prior experience in a regulated industry (fintech, proptech, or similar) ## Description As a Senior Backend Engineer with an affinity for observability, you would be supporting both a customer-facing and an advisor-facing product that run on Vue.js, GraphQL, and Ruby on Rails, powered by AWS. Our customer-facing products include complex calculators wrapped in a simple UI, with a powerful calculation engine that takes thousands of mortgage products and optimizes them for our customers. Our advisor-facing products include a fully-fledged back-office that ensures customer interactions over email, chat, and telephone - as well as the processing and handling of mortgage applications and financial documents - are reliable, efficient, and secure. You'll help ensure our calculation engines, back-office tools, and customer-facing platform become more resilient and secure as we grow. ## Related Videos - [Coffee with Developers: David Heinemeier Hansson](https://www.wearedevelopers.com/videos/875-coffee-with-developers-david-heinemeier-hansson) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Fireside Chat with David Heinemeier Hansson](https://www.wearedevelopers.com/videos/980-fireside-chat-with-david-heinemeier-hansson) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Coroutine explained yet again 60 years later](https://www.wearedevelopers.com/videos/690-coroutine-explained-yet-again-60-years-later) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)