Job description

Join our team in Warsaw, where we’re collaborating on a cutting-edge fintech venture with a global industry leader. Together with our Partner – Klarna, we’re building an IT hub designed to drive innovation in digital payment solutions. We’re on the lookout for top-tier engineers who thrive in dynamic, forward-thinking environments. Spyrosoft is leading the recruitment process, facilitating a seamless experience for candidates who are ready to shape the future of online shopping and payments.

This opportunity is ideal for engineers who value independence, proactiveness, and flexibility. Our engagement begins with a B2B contract through Spyrosoft, transitioning to a direct contract with our Partner.

We offer a hybrid work model in Warsaw’s vibrant Wola district. English fluency and eligibility to work in Poland are essential, as is the successful completion of a background check to meet the rigorous standards of the financial domain.

Our process:

• CV selection
• Initial recruitment screening
• Technical interview
• Online logic test
• Cultural fit interview

Project Description:

You will be part of a project focused on building a robust, scalable system with high availability, designed to support complex data flows and transaction processing. The system leverages Erlang/OTP for fault-tolerant, concurrent applications and operates within a modern AWS-based cloud environment. Key components include PostgreSQL for data storage and Kafka for message streaming. The system also integrates payment functionalities and aims for high performance and reliability in financial transaction processing.

Tech Stack:

• Erlang + OTP
• AWS
• PostgreSQL
• Apache Kafka
• Elixir (nice to have)
• Python (nice to have)

Requirements:

• Minimum 1 year of relevant experience.
• Hands-on experience with Erlang/OTP for system development. Strong understanding of concurrent programming and building fault-tolerant systems.
• Proven track record in working with AWS services, architecture, deployment, management, and scaling of cloud applications.
• Solid experience in managing Postgres databases and leveraging Kafka for real-time data processing and integration.
• Familiarity with Elixir is a plus, especially with a willingness to deepen Erlang expertise.
• Experience with the design and development of scalable, reliable payment and collection systems is a significant advantage.
• Deep understanding of cloud infrastructure, especially AWS tooling.
• Basic knowledge of Python is beneficial to broaden the tech stack and support versatile development tasks.
• Strong analytical and problem-solving skills. Ability to challenge the status quo and drive continuous improvement.
• Excellent verbal and written communication skills, enabling effective collaboration across teams and stakeholders.
• Ability to mentor and support peers while contributing to team success.
• A degree in Computer Science, Information Technology, or a related field.
• Fluency in English, both written and spoken.

Main Responsibilities:

• Design, develop, and maintain backend systems using Erlang/OTP.
• Implement and optimize cloud infrastructure using AWS services.
• Integrate and manage PostgreSQL and Kafka in a production environment.
• Collaborate with cross-functional teams to understand requirements and deliver scalable solutions.
• Participate in architectural decisions and propose improvements to enhance system performance and reliability.
• Support the development of payment and collection modules with a focus on reliability and scalability.
• Mentor junior developers and support knowledge sharing within the team.
• Ensure best practices in code quality, testing, and documentation.
• Communicate effectively with internal teams and external stakeholders to align technical goals.