Kotlin Developer
About the job
- At least 3 years of commercial experience developing backend applications in Java or Kotlin.
- Very good knowledge of Kotlin.
- Experience with Spring Boot or Ktor frameworks.
- Experience with Spring Security.
- Good knowledge of Gradle with Kotlin DSL.
- Experience working with relational databases, including PostgreSQL.
- Practical knowledge of microservices architecture, asynchronous communication such as RabbitMQ, and design patterns.
- Experience writing tests using JUnit or Kotest.
- Use of AI tools.
- Understanding of modern architecture, including microservices, REST APIs, and RPC, and experience working with relational databases.
- Openness to using new technologies, including AI-supported tools.
- Build services from scratch and influence technology choices without legacy technical debt.
- Maintain the performance and scalability of a system serving tens of thousands of customers.
- Use AI tools such as Claude Code, Cursor, and GitHub Copilot in software development.
- Set quarterly goals independently and make technical decisions for the project.
- Interest in the product and understanding the business purpose of the code.
- Willingness to work in an environment where developers' opinions influence the final functionality.
- Proactively seek effective solutions that make work easier for oneself and the team.
- Value a culture of mutual support and knowledge sharing.
About the company
Infakt.pl offers an online accounting platform in Poland that combines a user-friendly invoicing app (desktop and mobile) with access to professional accountants through an online accounting office. Users can issue, edit, and email invoices directly from the app and rely on human oversight for their accounting needs. The service covers the full business lifecycle, from company registration to ongoing accounting for various structures such as sole proprietorships and limited liability companies. Unlike purely software-based solutions, Infakt blends self-service tools with professional accounting support, providing end-to-end financial management tailored to small and medium-sized businesses. Its goal is to help Polish SMBs manage finances efficiently, stay compliant, and reduce the time spent on accounting tasks.
Company Size
201-500
Company Stage
Series A
Total Funding
$1M
Headquarters
Kraków, Poland
Founded
2008
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Simplify's Take
What believers are saying
- The 2026 e-invoicing rollout forces millions of Polish firms into KSeF-ready workflows.
- inFakt’s September 2026 pricing spans 0 zł KSeF, 4.99 zł invoicing, and 620 zł accounting.
- Its June 2026 accounting pages show strong demand for bundled software-plus-accountant services.
What critics are saying
- KSeF became mandatory on 1 April 2026, commoditizing invoice software and squeezing margins.
- Similarweb’s March 2026 competitors include ifirma.pl, faktura.pl, and symfonia.pl, intensifying price pressure.
- If Polish tax rules stabilize, inFakt loses its regulatory-change moat and becomes replaceable software.
What makes Infakt.pl unique
- inFakt combines invoicing software and human accounting, with KSeF support across plans.
- By 16 September 2026, its online accounting office starts from 200 zł monthly.
- July 2026 traffic hit 1.77M visits, making infakt.pl Poland’s top legal site.
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Benefits
- Health Insurance
- Life Insurance
- Flexible Work Hours
- Hybrid Work Options
- Relocation Assistance
- Conference Attendance Budget