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/month B2B- depending on your skills
  - 16 320- 22 180 PLN gross/month UoP

• 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.

Our recruitment process

Only 3 steps long:

1. Culture & mission fit meeting with Recruitment Team (abt. 45 minutes)

2. Competency interview with team representatives (abt. 60 minutes)

3. AI fluency assessment via AI CRED (aicred.ai) — a short online test measuring competency across 5 AI dimensions.

4. If any other step of the recruitment process is necessary, we will inform you!

5. And finally, the decision — after which we can say "welcome on board."