Senior Backend Engineer/ Elixir

Our client is solving modern organizations' biggest challenge – navigating global employment compliantly with ease. They make it possible for businesses of all sizes to recruit, pay, and manage international teams. Their team works across 6 different continents, all positions are fully remote, and innovation is at the heart of everything they build.

What this role can offer you

• Complex and meaningful challenges — solving them will enable people and businesses to live and operate in any country of the world.
• Significant impact on the business — early-stage company where each change is amplified by growth.
• Freedom to organize your work and life — no mandatory standups, recurring meetings or ceremonies.
• Competitive salary, stock options, flexible paid time off, and a set of perks and benefits.
• Supportive environment where you are encouraged to challenge the dogmas and pursue innovation.
• Strong team of experienced engineers who will support and facilitate your professional growth.

What we offer

• Salary: 19,500 - 26,500 PLN net (B2B) - depending on your skills
• Remote first approach
• Transparent, async-first, documentation-driven organization
• AI-native work environment

What do we need for this position

• Design and maintain server-side applications with a focus on high availability and scalability.
• Collaborate in a product trio, working closely with designers and product managers to ship impactful features.
• Drive technical excellence by promoting best practices in code quality, security, and automated testing.
• Proactively troubleshoot and optimize existing systems to ensure top-tier performance.
• Stay curious – research emerging technologies and help us innovate our tech stack.
• Practical experience designing or adopting agentic/automation workflows and improving them through iteration.
• Ability to think in systems: define specs clearly, break down plans, instrument verification, and close the loop on quality.

You’ll be a great fit if you have

• 5+ years of experience as a Backend Engineer in cross‑functional, agile environments.
• Strong engineering fundamentals and a track record of shipping production systems that are secure, reliable, and scalable.
• Strong proficiency in Elixir for backend development.
• Hands‑on experience with Phoenix Framework, building robust and scalable services.
• Solid SQL skills and experience with Postgres, including schema design and performance tuning.
• Proficiency in REST API design and microservices architecture within cloud environments (preferably AWS).
• CI/CD experience (GitLab, GitHub, Jenkins or similar).
• Excellent communication skills in English (B2/C1) and Polish, with the ability to explain complex technical concepts to various stakeholders.

Nice to have

• Kubernetes, Docker, AWS.
• Next.js, React / Vue / Angular.
• Knowledge of Infrastructure as Code (Terraform/CloudFormation).
• Ability to lead technical workshops or mentor junior developers.
• Project Experience: Drives the success of major projects or multiple concurrent projects, providing strategic technical leadership. Often consulted for expertise on high‑impact decisions.
• Technical Skills: Possesses deep expertise across multiple technical areas and the ability to drive innovation within the team. Skilled at identifying and mitigating technical risks and ensuring the robustness of solutions.
• Responsibilities: Provides technical leadership across projects, mentors other senior developers, and shapes the team’s technical direction and practices.

Backend (Elixir) — Platform‑Specific

• Oversees the design and implementation of large‑scale Elixir systems.
• Drives innovation within the Elixir team.
• Ensures best practices in building scalable, maintainable backend services.