Senior Go Engineer – Payment Gateway Solutions

🔥 5 minutes ago

🌐 Poland, Serbia, +3 more countries – Remote

🇵🇱 Poland – Remote 🇷🇸 Serbia – Remote 🇨🇾 Cyprus – Remote 🇰🇿 Kazakhstan – Remote 🇦🇲 Armenia – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 13%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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COLIBRIX ONE

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2020

💳 Fintech

🏦 Banking

🔌 API

Fintech • Banking • API

COLIBRIX ONE is an all-in-one payments platform and electronic money institution that provides card acquiring, virtual card issuance, business accounts (IBAN/SEPA) and developer-facing payment APIs and solutions. The company is a principal member of Visa and Mastercard and is FCA- and MFSA-authorised, offering scalable, secure payment processing, mass payouts, open banking and compliance-backed infrastructure for businesses and agencies of various sizes.

📋 Description

• Design and develop Go-based services for the payment gateway and related fintech systems, focusing on stability, fault tolerance, and correct handling of financial operations • Translate business requirements into technical specifications and propose solutions at the service and module level, including API design, data models, and external-provider integrations • Build solutions compliant with security requirements, including PCI DSS, sensitive-data handling, and secure inter-service communication • Analyze and optimize service performance through code profiling, concurrency handling, and efficient data storage and network interactions • Participate in microservices architecture, including service boundaries, communication patterns, load balancing, error handling, queues/streaming, and data storage • Produce maintainable, testable code with appropriate unit and integration test coverage • Participate in code reviews, evaluate implementations, identify issues, and provide constructive feedback • Contribute practical solutions to technical discussions within the current architecture and development processes

🎯 Requirements

• 3–5 years of Go development experience focused on backend systems • Around 5 years of experience working with fintech applications • Understanding of distributed systems, microservices architecture, and API design, including REST/RPC transports • Experience working with SQL and NoSQL databases, message brokers (Kafka, NATS), and caching systems • Familiarity with CI/CD practices and tools, preferably GitLab • Experience working with the AWS cloud platform • Ability to contribute expertise and collaborate with the team on technical solutions • Strong communication skills and ability to explain complex technical ideas to colleagues with varying levels of technical background • Fluency in written and spoken English and Russian • Experience in the fintech domain • Security-by-design mindset and ability to design solutions with security considerations built in at every stage • Understanding of fintech regulatory requirements, including PCI DSS and GDPR • Experience in performance optimization and building high-availability systems • Experience with observability tools including logging, metrics, tracing, Prometheus, Grafana, and OpenTelemetry • Experience integrating with external payment providers, processors, or anti-fraud systems

🏖️ Benefits

• Opportunity to shape the future of fintech solutions within a growing company • Collaborative, horizontal team structure that values your expertise and ideas • Continuous learning and development opportunities to enhance your skills and career growth • Competitive salary and benefits package • Flexible work arrangements to support work-life balance