Senior Ruby on Rails Developer (AI-Augmented Engineering)
Proxify AB
Senior Ruby on Rails Developer (AI-Augmented Engineering) at Proxify AB is a full time role based in Remote · Worldwide (remote). Listed skills: Ruby and Ruby on Rails. It was published on 14 August 2026 and was open at last check.
| Role | Senior Ruby on Rails Developer (AI-Augmented Engineering) |
|---|---|
| Company | Proxify AB |
| Location | Remote · Worldwide (remote) |
| Employment type | Full Time |
| Skills listed | Ruby and Ruby on Rails |
| Published | 14 August 2026 |
| Status | Open at last check |
Headquarters: Sweden
The Role:
We are seeking a Senior Ruby on Rails Developer who treats software engineering as an art form and a discipline. In this role, you will lead the development and scaling of highly responsive, business-critical web applications. You won't just build features; you will optimize system architectures, manage complex domain models, and champion engineering practices that keep codebases sustainable over long lifecycles.
We look for developers who understand the core principles of software craftsmanship and can leverage modern technologies—like AI development workflows—to compress delivery timelines without compromising code quality. If you are an active contributor to the broader tech community and are obsessed with writing clean, expressive Ruby, you will thrive here.
What we are looking for:
- 5+ years of production experience writing object-oriented Ruby and scaling robust Rails applications.
- Strong command over architectural patterns, domain-driven design, data modeling, concurrency, caching strategies, and API security protocols. You value automated testing (RSpec/Minitest) as a critical design tool.
- Proven ability to integrate AI development tools (such as GitHub Copilot, Cursor, or specialized LLM agents) into your daily engineering workflow. We value engineers who use AI to accelerate boilerplate writing, refactoring, and test generation, while maintaining the critical eye needed to debug and validate the outputs.
- A history of interacting with or contributing directly to the open-source community—whether that means maintaining custom gems, submitting PRs to public repositories, or actively contributing to the Rails ecosystem.
- Hands-on experience optimizing PostgreSQL databases, managing background processing via Sidekiq, and deploying containers with Docker into cloud native environments (AWS/GCP/Heroku).
- Located in CET timezone (+/- 3 hours), we are unable to consider applications from candidates in other time zones.
Responsibilities:
- Design and maintain modular, testable, and highly performant backend architectures that support complex business domains.
- Pioneer the adoption of AI-assisted coding practices within the team, demonstrating how to use modern generative tools to double execution speed safely.
- Identify and eliminate N+1 queries, tune database indexes, and optimize memory consumption to ensure low-latency application responses.
- Conduct meaningful code reviews that elevate the team's engineering bar, ensuring adherence to the Ruby Style Guide and SOLID design principles.
- Bring public open-source best practices into our private repositories, keeping our internal tools modern, secure, and maintainable.
What we offer:
Get paid, not played
No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.
Predictable project hours
Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.
Flex days, so you can recharge
Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.
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Hand-picked opportunities, just for you
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One seamless process, multiple opportunities
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Compensation
Enjoy the same pay, every month with positions landed through Proxify.
Create your free OnJob profile to apply — we'll take you to Proxify AB's application after sign-up. · Posted 14 Aug 2026.
Senior Ruby on Rails Developer (AI-Augmented Engineering) at Proxify AB — questions answered
What does the Senior Ruby on Rails Developer (AI-Augmented Engineering) role at Proxify AB pay?
Proxify AB does not publish a salary on this Senior Ruby on Rails Developer (AI-Augmented Engineering) listing, so OnJob shows no figure for it rather than an estimate. For what this role pays across the market, the OnJob salary guides aggregate the live listings that do disclose pay.
Is the Senior Ruby on Rails Developer (AI-Augmented Engineering) role at Proxify AB remote?
Yes — Proxify AB advertises this Senior Ruby on Rails Developer (AI-Augmented Engineering) role as remote, tied to Remote · Worldwide, and it is listed as full time work. Remote terms come from the employer's own posting, so confirm the expected working hours, timezone and any on-site days with Proxify AB before you apply.
What skills does the Senior Ruby on Rails Developer (AI-Augmented Engineering) role at Proxify AB require?
The Senior Ruby on Rails Developer (AI-Augmented Engineering) at Proxify AB listing names Ruby and Ruby on Rails. Those are the skills the employer put on the posting itself, so they are the ones worth matching in your profile and covering first in an interview.
Is the Senior Ruby on Rails Developer (AI-Augmented Engineering) role at Proxify AB still open?
The Senior Ruby on Rails Developer (AI-Augmented Engineering) posting at Proxify AB was open at OnJob's last check of the employer's careers page, having been published on 14 August 2026. OnJob re-checks source listings on each build and marks a role closed once it disappears, but listings can close without notice, so the employer's own page is the final word.
How do you apply for the Senior Ruby on Rails Developer (AI-Augmented Engineering) role at Proxify AB?
Apply to the Senior Ruby on Rails Developer (AI-Augmented Engineering) at Proxify AB role through OnJob with a free profile: OnJob scores your fit against the listing, shows the skills lowering that score, and submits an ATS-ready profile to Proxify AB's own application page. Creating a profile is free and needs no card.
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