Senior Java/Kotlin Engineer (Core)

Our Mission and Vision

At Solidgate, our mission is clear: to empower outstanding entrepreneurs to build exceptional internet companies. We exist to fuel the builders — the ones shaping the digital economy — with the financial infrastructure they deserve.

Key facts:

—Offices in Ukraine, Poland, and Cyprus
—250+ team members
—200+ clients went global (Ukraine, US, EU)
—Visa and Mastercard Principal Membership
—EMI license in the EU
 

Solidgate is part of Endeavor — a global community of the world’s most impactful entrepreneurs. We’re proud to be the first payment orchestrator from Europe to join — and to share our expertise within a network of outstanding global companies.

We believe the future of payments is shaped by people who think big, take ownership, and bring curiosity and drive to everything they do. That’s exactly the kind of teammates we want on board.

Our advantages:

—A product with impact: Work on a product with a powerful backend architecture, complex business logic, and a modern tech stack
—A strong engineering culture: Our engineers don’t just maintain systems; they design them from the ground up
—Rapid growth: You’ll be part of a fast-scaling product, creating features that solve real business challenges
—Meaningful challenges: Tackle complex problems and see your direct impact on the company’s growth
—An A-player team: Join a team that is passionate about a common goal, united by a shared vision and values.

We’re on the lookout for a motivated and decisive Java/Kotlin Engineer to join the Core Team. You’ll have a unique chance to boost our team both in terms of capacity and quality, and make a real impact on a product currently in active development.

Our Tech Stack: Kotlin (K/JVM), Spring Boot, PostgreSQL, Hibernate, Elastic, RabbitMQ, AWS, Docker, GitLab.

Your Role:
 

—Develop key features like payment routing between providers, 3DS payment processing, payment synchronization solutions, BIN services, and asynchronous financial reporting
—Participate in designing new payment architecture
—Find robust architectural solutions for processing financial transactions within our product ecosystem
—Work on the reliability of the entire payment system
—Take ownership of critical services
—Write unit and functional tests to ensure top-notch quality

What You Need:
 

—5+ years of experience with Kotlin (K/JVM) or Java
—Knowledge of PostgreSQL or MySQL
—Experience with Spring Boot and Spring Framework
—Background in working with large systems and complex databases
—Experience with microservices architecture
—Proactive attitude and results-oriented approach
—Understanding of business processes

Bonus Points:
 

—Experience with RabbitMQ
—Knowledge of Apache Kafka
—Familiarity with GRPC
—Experience with Golang
—Background in fintech or financial sectors

At Solidgate, you’ll work on an intriguing and challenging product, contribute to building its architecture, and have a real impact on our company’s future! Join us and make a difference!

Competitive corporate benefits:
 

—more than 30 days off during the year (20 working days of vacation + days off for national holidays)
—health insurance and corporate doctor
—free snacks, breakfasts, and lunches in the office
—full coverage of professional training (courses, conferences, certifications)
—annual performance review
—sports compensation
—competitive salary
—the ability to work remotely
—Apple equipment

📩 Ready to become a part of the team? Then cast aside all doubts and click “apply”.