Senior Go Engineer – Core Banking

🔥 3 hours ago

🌐 Poland, Cyprus, +3 more countries – Remote

🇵🇱 Poland – Remote 🇨🇾 Cyprus – Remote 🇵🇹 Portugal – Remote 🇬🇪 Georgia – Remote 🇷🇸 Serbia – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 16%

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

• Contribute significantly to the payment gateway product • Build advanced payment technologies supporting PSPs, EMIs, and neobanks across the EU and UK • Design and implement reliable transactional systems for financial operations • Build and operate production Go services • Investigate incidents, perform safe deployments and database migrations, and maintain observability • Integrate systems with banks, payment providers, processors, AML/KYC, and anti-fraud platforms • Translate business requirements into technical solutions and independently drive implementation • Influence and mentor team members through knowledge and experience rather than formal authority • Collaborate within a horizontal team to shape fintech solutions

🎯 Requirements

• 5+ years of professional Go development experience, including 3+ years in fintech, banking, payments, or other transaction-critical systems • Strong knowledge of distributed systems, microservices, and API design (REST and gRPC) • Advanced PostgreSQL skills, including transactions, isolation levels, locking, indexing, migrations, and concurrency • Experience designing reliable transactional systems using idempotency, retries, event deduplication, transactional outbox, sagas, and reconciliation • Hands-on experience with event-driven architectures and message brokers such as NATS, Kafka, or RabbitMQ • Experience building and operating production services, including incident investigation, safe deployments, database migrations, and observability • Practical knowledge of AWS, Kubernetes, and CI/CD • Experience integrating with banks, payment providers, processors, AML/KYC, or anti-fraud platforms • Understanding of security requirements for financial and personal data • Ability to translate business requirements into technical solutions and independently drive implementation • Strong communication skills and working proficiency in Russian and English • Hands-on experience in banking domain areas including ledgers, accounting flows, accounts, balance management, holds, reversals, adjustments, reconciliation, settlement, SEPA, SWIFT, ISO 20022, card transaction lifecycles, and card scheme integrations • Experience with Temporal or a similar workflow engine is nice to have • Experience with NATS/JetStream, GitLab CI/CD, OpenTelemetry, Prometheus, Grafana, Loki, or Tempo is nice to have • Knowledge of event sourcing or append-only financial data models is nice to have • Familiarity with PCI DSS and GDPR is nice to have • Experience using AI coding tools for analysis, implementation, testing, or code review is nice to have

🏖️ 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