Senior Golang Engineer — Test Infrastructure Transformation

About The Client Our client is a payment orchestration platform dedicated to optimizing and scaling payment flows for online businesses. They provide intelligent routing, real-time analytics, and partner with various payment service providers. With a PCI DSS-certified gateway, they enhance acceptance rates, reduce costs, and ensure secure transactions. Since its founding in 2019, the company has served mid-market and enterprise clients worldwide, including those in high-risk sectors like iGaming. The company is headquartered in Lithuania and has offices in Malta and Cyprus, with R&D centers in Poland and Georgia. Role Overview Join an exciting project as a Senior Golang Engineer focused on transforming test infrastructure. You will tackle the challenge of migrating and redesigning a Java-based test automation environment to Golang, enhancing its reliability and scalability. This remote position offers the opportunity to influence architectural decisions and integrate cutting-edge technology in a fully remote team. Key Responsibilities Analyse the existing Java-based test automation infrastructure and contribute to its transformation into Golang.Design, develop, and maintain reliable and scalable test infrastructure using Golang.Migrate, redesign, or replace existing Java components where required.Contribute to architectural decisions and help define the technical approach for the transformation.Ensure the stability of existing testing processes throughout the migration.Integrate the new infrastructure with CI/CD pipelines and the broader development environment.Collaborate closely with QA, Backend, and DevOps engineers.Troubleshoot technical issues and improve the performance, reliability, and maintainability of the infrastructure.Write clear technical documentation and follow engineering best practices.Take ownership of assigned technical areas and deliver them independently from analysis to implementation. Requirements Strong commercial experience in Golang at Senior Engineer level.Hands-on experience developing test automation infrastructure, testing frameworks, or internal engineering tools.Experience with Java and the ability to understand and work with an existing Java codebase.Experience migrating, modernising, or redesigning backend systems or infrastructure.Strong understanding of software architecture, APIs, backend systems, and microservices.Experience with CI/CD pipelines, Docker, and Kubernetes.Strong debugging and problem-solving skills.Ability to work independently, make sound technical decisions, and take ownership of delivery.Good communication and cross-functional collaboration skills.Professional working proficiency in English and Russian. Key Soft Skills Strong analytical thinking and the ability to approach complex problems methodically.Excellent stakeholder management skills to effectively communicate with cross-functional teams.Adaptability to fast-paced environments, with the ability to pivot and adjust strategies quickly. What We Offer Competitive salary aligned with experienceCollaborative and transparent team cultureHigh-impact role in a scaling fintech companyRecognition of personal milestones and achievementsSocial benefits