Software Engineer 1 (.NET) - Core System

About the job

Allegro Pay develops purchase-financing and payment methods used daily by customers of Allegro. The work supports financial solutions at large scale, serving more than 2.5 million people, handling over 60 million requests daily, and managing dozens of terabytes of data.

The role

Join the team responsible for the core financial system—the source of truth for customer and loan data. Focus on improving system performance, scalability, and reliability; designing and delivering new capabilities; and continuously improving code quality and maintainability.

Work closely with internal stakeholders, including Accounting and Controlling teams, to understand needs and translate them into robust technical solutions.

Working arrangement and compensation

• Flexible hybrid working model (4/1), with start times between 7:00 a.m. and 10:00 a.m.
• 30 days of occasional remote work.
• Team based in Warsaw.
• Salary range: PLN 11,200–15,250, depending on skills.
• Annual bonus based on individual annual performance and company results.

Why join

• Access to AI coding technologies, including Copilot and OpenCode.
• Work on large-scale financial solutions with more than 120 deployments per month.
• Collaborate with experienced FinTech specialists, including MVPs and conference speakers.
• Contribute directly to products used by millions of customers.

Requirements

• Experience in .NET backend development.
• Practical experience with SQL databases, specifically PostgreSQL.
• Ability to understand broader business context and communicate effectively with internal clients.
• High sense of responsibility and resilience when working with critical financial data.
• Openness to actively using AI tools, such as GitHub Copilot, to optimize coding tasks.
• Independence and ownership of features from delivery through completion.
• Commitment to continuous learning, constructive feedback, and improving ways of working.
• Effective team collaboration, knowledge sharing, and contribution to a supportive engineering culture.
• Fluent Polish for daily communication with business stakeholders.
• Communicative English at B2 level or higher.

Benefits

• Well-located offices with equipped kitchens, bicycle parking, green terraces, and ergonomic workspaces.
• Choice of a 16-inch or 14-inch MacBook Pro, or a Dell laptop with Windows, plus required accessories.
• Cafeteria benefits plan, including medical, sports, lunch, insurance, and purchase-voucher options.
• Employer-funded English classes related to the role.
• Training budget, inter-team tourism, hackathons, and an internal learning platform.
• An additional volunteering day.
• Social events, including Spin Kilometers, Family Day, Fat Thursday, and Advent of Code.

Engineering environment

• High team autonomy in organization, technology selection, and solution ownership.
• Developer Experience platform based on self-service tools, including Kubernetes, Docker, Consul, GitHub, and GitHub Actions.
• Modern AI tools to automate repetitive work and support development of new and existing services.
• Work at scale across more than 1,000 microservices, an open-source Hermes data bus with 300K+ requests per second, a service mesh with 1M+ requests per second, tens of petabytes of data, and production machine learning.
• Opportunities to participate in technical communities, conferences, blogs, podcasts, guilds, and internal technology events.