Staff Back End Engineer

REMOTE

POLAND

September 30, 2025

Svitla Systems Inc. is looking for a Staff Back End Engineer for a full-time position (40 hours per week) in Poland. The client is in the fintech domain. They are developing their own SaaS platform for businesses in the US, Canada, and the EU. The service will help to optimize communication processes, tasks, workflow, invoicing, and all the routine activities. More than 10,000 companies across 25 countries have chosen the product, and they are actively expanding into new markets.

You'll join the R&D team (about more than 250 people: developers, QA engineers, designers, technical support engineers, DevOps engineers, and product managers). It is a key technical leadership role in the company; it is not just an expert developer, but a person who takes responsibility for the technical success of their cluster (a group of 2–4 cross-functional micro-teams working on related functionality). The team expects you to act as a technical driver: helping teams solve complex engineering challenges, improving architecture, scaling processes, and ensuring that technical decisions lead to sustainable product growth.

Across all clusters, Staff Engineers are responsible for defining clear integration boundaries and public APIs for how their cluster interacts with other parts of the platform. Examples of domain-specific challenges by cluster:

• Bookkeeping: Categorization of client financial transactions, including leveraging AI to automate classification.
• Intake: Collection and categorization of client documents (including using AI) to support tax preparation workflows.
• Payments: Development of an in-house payment provider, including secure payment processing and integrations.
• Implementation of a real-time chat solution
• Billing plans: Development of a solution for flexible management of client permissions based on subscription plans and individual access settings.

Technology stack: Ruby on Rails (7+), PostgreSQL, Docker, AWS infrastructure, Kubernetes; CI/CD with Jenkins and Gitlab, Bitbucket.

REQUIREMENTS

• 10+ years of experience in backend development (with Ruby on Rails preferred).
• Experience designing and evolving architecture in complex systems.
• Readiness to learn Ruby on Rails (if you don't have experience yet).
• Understanding of CI/CD processes and tools, including Jenkins, GitLab, and Bitbucket.
• A product mindset and understanding of how technical decisions impact business outcomes.
• Strong communication skills and ability to influence without authority.
• Experience driving cross-team initiatives and leading technical discussions.
• Passion for clean code, technical excellence, and knowledge sharing.

RESPONSIBILITIES

• Take ownership of the technical strategy and architecture within the cluster.
• Collaborate closely with Engineering Managers, Product Managers, and other Staff Engineers to align technical solutions with business goals.
• Help teams design scalable and maintainable solutions.
• Conduct technical reviews of critical changes and drive engineering best practices.
• Identify technical risks and find ways to mitigate them early.
• Mentor senior engineers and raise the technical bar across the cluster.
• Participate in hiring and onboarding processes for senior engineers.
• Drive cross-team technical initiatives and improvements.

WE OFFER

• US and EU projects based on advanced technologies.
• Competitive compensation based on skills and experience.
• Regular performance appraisals to support your growth.
• Flexibility in the workspace, either remote or in our welcoming office.
• Comprehensive medical insurance after one month.
• MultiSport card with access to 2500 sports facilities all over Poland
• Bonuses for recommendations of new employees.
• Bonuses for article writing, public talks, and other activities.
• 15 vacation days, 10 national holidays, 10 sick leaves, and family days off.
• Personalized learning program tailored to your interests and skill development.
• Free tech webinars and meetups organized by Svitla.
• Welcome and anniversary presents, gifts for children, and more.
• Regular corporate events and meetups.
• Awesome team, friendly and supportive community

ABOUT SVITLA

Svitla Systems is a global digital solutions company headquartered in the U.S. and operating across the Americas, Europe, Asia, and APAC. Since 2003, we have served a wide range of clients — from innovative start-ups to Fortune 500 companies.

Our success is built on partnership. By integrating seamlessly with clients' teams, we create lasting collaborations that drive real results.

We are strong advocates of workplace flexibility, remote culture, individual approach to professional and personal growth.

Svitla is proud to be an equal opportunity employer. All qualified applicants will receive consideration for cooperation without regard to age, gender identity, sexual orientation, religion, race, color, national origin, disability, or any other characteristic protected by applicable law.

Our global mission is to build a business that contributes to wellbeing of our partners, personnel, and their families, improves our communities, and makes a lasting difference in the world.

Together, we are coding a brighter tomorrow — and living it.

Join us

LET'S MEET IN PERSON

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Olha Chyzh