ppbJoin COLIBRIX ONE – Innovating the Future of Payments /b /p /brpAt COLIBRIX ONE*, we're building advanced, AI-powered payment technologies that support Payment Service Providers (PSPs), Electronic Money Institutions (EMIs), and neobanks across the EU and the UK. As a fully licensed Electronic Money Institution (FCA Reference No. ) and holder of a Financial Institution Licence issued by the MFSA, as well as a principal member of both VISA and Mastercard, we provide comprehensive, real-world financial solutions that include: /p /brul /brliGlobal card processing /li /brliDigital wallet infrastructure /li /brliCross-border merchant accounts /li /brliAlternative payment methods (APMs) /li /brliCorporate accounts for legal entities /li /br /ul /brpWe're a fast-growing team with a passion for innovation, security, and scalability. Our culture values curiosity, collaboration, and impact - and we're looking for talented professionals who are ready to shape the future of fintech. /p /brpAt COLIBRIX ONE, your work directly powers the digital economy. If you're eager to solve meaningful challenges and build with purpose, we'd love to hear from you. /p /brpWe're seeking an experienced bGo Engineer /b to join our team and contribute significantly to our payment gateway product. The idóneo candidate will bring deep technical expertise, a collaborative mindset, and the ability to influence and mentor team members through knowledge and experience rather than formal authority. /p /brh3About the project: /h3 /brpPayment gateway solutions - fintech product that securely connects merchants and financial institutions to process online payments in real time. It handles transaction routing, encryption and tokenization, fraud and risk checks, and integration with acquirers, payment aggregators and alternative payment methods. The Payment Gateway supports high availability, scalability, and compliance with PCI DSS and PSD2. /p /brh3Tech stack: /h3 /brpGo, PostgreSQL/MySQL, MongoDB/Redis, Kafka,



NATS, REST/gRPC, AWS, GitLab CI/CD, Prometheus, Grafana. /p /brh3Key responsibilities: /h3 /brul /brliDesign and develop Go-based services for the payment gateway and related fintech systems, focusing on stability, fault tolerance, and correct handling of financial operations /li /brliTranslate business requirements into clear technical specifications and propose concrete solutions at the service and module level, including API design, data models, and integrations with external providers /li /brliBuild solutions in compliance with security requirements, including PCI DSS, proper handling of sensitive data, and secure inter-service communication /li /brliAnalyze and optimize service performance, including code profiling, concurrency handling, and efficiency of data storage and network interactions /li /brliParticipate in the architecture of microservices: service boundaries, communication patterns, load balancing, error handling, queues/streaming, and data storage approaches /li /brliProduce maintainable, testable code with appropriate unit and integration test coverage, following team development standards /li /brliParticipate in code review as part of the development process: evaluate implementations, identify issues, and provide constructive feedback aligned with technical requirements /li /brliContribute to technical discussions by offering concrete, practical solutions within the current architecture and development processes /li /br /ul /brh3What You Need to Succeed in This Role:



/h3 /brul /brli3–5 years of Go development experience focused on backend systems, and around 5 years of experience working with fintech applications /li /brliUnderstanding of distributed systems, microservices architecture, and API design, including REST/RPC transports /li /brliExperience working with SQL and NoSQL databases, message brokers (Kafka, NATS), and caching systems /li /brliFamiliarity with CI/CD practices and tools, preferably GitLab /li /brliExperience working with the AWS cloud platform /li /brliAbility to contribute expertise and collaborate with the team on technical solutions /li /brliStrong communication skills and the ability to explain complex technical ideas to colleagues with varying levels of technical background /li /brliFluency in written and spoken English and Russian /li /brliExperience in the fintech domain /li /brliSecurity‑by‑design mindset: ability to design solutions with security considerations built in at every stage /li /brliUnderstanding of regulatory requirements in the fintech space (e.g., PCI DSS, GDPR) /li /brliExperience in performance optimization and building high‑availability systems /li /brliExperience with observability tools: logging, metrics, tracing (Prometheus, Grafana, OpenTelemetry) /li /brliExperience integrating with external payment providers, processors, or anti‑fraud systems /li /br /ul /brh3What We Offer: /h3 /brul /brliOpportunity to shape the future of fintech solutions within a growing company /li /brliCollaborative, horizontal team structure that values your expertise and ideas /li /brliContinuous learning and development opportunities to enhance your skills and career growth /li /brliCompetitive salary and benefits package /li /brliFlexible work arrangements to support work-life balance /li /br /ul /brp* This position is offered within the COLIBRIXONE. Employment will be under the appropriate legal entity based on the role and location. /p /p #J-18808-Ljbffr

📌 Senior Go Engineer (Payment Gateway Solutions) (Bellprat)
🏢 Colibrix One
📍 Bellprat