Senior Software Engineer

Job Overview

VinSmart Future is Vingroup’s dedicated technology company, building the unified platform that powers a SuperApp ecosystem spanning payments, healthcare, mobility, commerce, and entertainment.

Our Fintech division operates non-credit financial products — e-wallet, payment, merchant acquiring, settlement, and reconciliation — where transaction correctness, reliability, and operational efficiency are critical to the business.

As a Senior Software Engineer (Golang), you will own mission-critical services, drive architectural decisions, and work cross-functionally to deliver high-quality financial infrastructure at scale. We are looking for engineers who owned systems end-to-end — not just participated in them.

Key Responsibilities:

• Own end-to-end design and implementation of backend services for payment, wallet, transaction, merchant, and/or settlement systems.
• Build high-availability Go microservices with focus on correctness, idempotency, consistency, and safe retry handling.
• Design data models, API contracts, event flows, and service boundaries for reliable financial operations.
• Lead migration and decomposition of existing systems; improve throughput, latency, and reliability of production services.
• Take production accountability: on-call rotation, incident response, postmortems, and root-cause resolution.
• Build and maintain observability: monitoring dashboards, alerting, distributed tracing, and SLA/SLO tracking for critical payment flows.
• Collaborate with product, operations, risk, compliance, and finance teams to translate business requirements into robust technical solutions.
• Mentor junior and mid-level engineers; lead code reviews and establish Go coding standards across the team.
• Identify and implement performance improvements at database, application, and infrastructure levels.

Qualifications:

Required:

• 6-8+ years backend engineering; 3-5+ years production Golang (goroutines, channels, context, concurrency patterns) — mission-critical services, not side projects.
• Ownership of business-critical payment, wallet, transaction, settlement, or reconciliation systems with measurable impact.
• Strong database skills: PostgreSQL or MySQL with transaction isolation, locking strategies, schema design, idempotency, and data migrations.
• Experience with Redis (caching, distributed locking) and event-driven systems (Kafka or RabbitMQ) for async flows, retries, and eventual consistency.
• Deep understanding of financial correctness: duplicate transaction prevention, reconciliation, and settlement accuracy.
• Experience with gRPC and RESTful API design, including versioning and backward compatibility.
• Strong observability: Prometheus, Grafana, Datadog, ELK, or OpenTelemetry.
• CI/CD ownership; Docker and Kubernetes experience.
• Clear track record of cross-functional collaboration and technical leadership.

Preferred Skills:

• Familiarity with outbox pattern, saga, optimistic/pessimistic locking, and distributed transaction strategies.
• Experience with fraud detection, risk scoring, KYC/AML, or compliance-adjacent backend systems.
• Exposure to banking integrations, open banking APIs, or payment provider callbacks and failure-state handling.
• Load testing and performance profiling of high-throughput Go services.

📩 Apply via:

Email: [email protected]