Integration Engineer

We’re looking for a technically skilled, detail-oriented, and solutions-driven Integration Engineer who thrives in fast-paced environments and is passionate about building and optimizing payment infrastructure. You should be proactive and curious — energized by the challenge of integrating payment partners, ensuring seamless transaction flows, and troubleshooting complex systems to support secure, scalable, and global payment operations.

Honesty and Trust are core to who we are. We expect transparent and truthful communication from all our team members.

Learning and Curiosity drive our success. You bring sharp thinking, legal awareness, and a desire to grow alongside a global fintech company navigating complex, international regulations.

Multicultural and Multilingual Even better. We operate across borders and value team members who can bridge cultural and legal differences with ease.

Position Overview

As an Integration Engineer, you will be instrumental in integrating and optimizing payment systems to support our global growth strategy. You’ll work at the core of our fintech platform, helping to deliver secure, seamless, and scalable payment solutions tailored to diverse customer needs across multiple geographies. This is a key opportunity to shape how we build and manage payment infrastructure as we grow internationally.

What You Will Do

• Integrate and maintain payment systems and gateways to ensure seamless transaction processing across multiple platforms and regions.
• Design and implement secure APIs and services to interface with third-party payment providers and internal systems.
• Collaborate with product, engineering, and finance teams to define and implement payment flows and reconciliation processes.
• Monitor and troubleshoot payment transaction failures, delays, and discrepancies, ensuring high system availability and fast resolution of issues.

• Maintain clear and up-to-date technical documentation for payment integrations, including flow diagrams, API references, and vendor-specific nuances.

   

Skills & Competencies Required

• Proficient in PHP, with strong experience in Laravel or similar frameworks for backend development.
• Deep understanding of MySQL: writing complex queries, performance tuning, indexing, and maintaining data integrity.
• Hands-on experience integrating third-party APIs — especially payment gateways — using REST, SOAP, JSON-RPC, and Webhooks.
• Familiarity with various payment API flows: token-based, session-based, redirect, server-to-server, and client-side SDKs.
• Skilled at interpreting and implementing complex API documentation quickly and accurately.
• Solid knowledge of web security practices, including CSRF/XSS protection, token management, encryption, and PCI DSS compliance.
• Experience with queue systems, background processing, and asynchronous event handling (e.g., Laravel Queues, Redis, RabbitMQ).
• Ability to debug and resolve API communication issues, monitor logs, and ensure real-time transaction integrity.
• Excellent communication skills — able to bridge technical discussions between engineering, QA, product, and external payment partners.
• Strong documentation practices — capable of writing clean integration guides and maintaining technical specs.
• Comfortable working in a fast-paced, high-ownership environment with minimal supervision.

• Experience in fintech, e-commerce, or high-volume transactional systems is a strong advantage.

   

Who Should Apply

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related technical field.
• At least 2–4 years of experience in backend development or API integration, ideally with exposure to payment systems.
• Fluency in English (C1/Advanced), both written and verbal
• You’re curious, self-motivated, and excited to dig into how global payment infrastructures work.
• You have a proactive mindset — always looking for ways to improve processes and solve system integration challenges.
• You enjoy collaborating across technical and non-technical teams and can communicate clearly with both.
• You’re ready to contribute to a fast-growing fintech environment where reliability, security, and performance are essential.
• A stable internet connection with at least 30 Mbps download speed is required for smooth remote collaboration.

• No restrictions on business travel

   

Why Join Us?

If you are eager to take your career to the next level in the payment industry, this is the opportunity for you. We offer:

• Competitive compensation depending on experience and skills
• Career advancement opportunities across a global network
• A dynamic, international team environment

• Exposure to the fintech and gaming industries.

   

This role is the ideal opportunity for someone looking for new challenges that would allow them to make a noticeable, positive impact in the company while learning and adapting to our fast-paced scale-up environment.

As part of our growing team in Kyiv you will have a lot of opportunities to develop your career further with us. With future expansion plans, now is a great time to join us on our journey to change the way we pay.

Notes: Only shortlisted candidates will be contacted.