Intellectsoft is a software development company delivering innovative solutions since 2007. We operate across North America, Latin America, the Nordic region, the UK, and specialize in industries like Fintech, Healthcare, EdTech, Construction, Hospitality, and more, partnering with startups, mid-sized businesses, and Fortune 500 companies to drive innovation and scalability. Our clients include Jaguar Motors, Universal Pictures, Harley-Davidson, and many more where our teams are making daily impactTogether, our team delivers solutions that make a difference. Learn more at

We are seeking a skilled Senior Golang Developer to drive the technical implementation required for the modernization and retirement of our Customer's legacy Java/Spring Boot system. This role focuses on expert coding, execution and transforming a live production environment into a modular, high-performance Golang ecosystem that is optimized to support our next-generation institutional trading stack.

You’ll be a key contributor in breaking down legacy services, defining boundaries for new ones, migrating APIs and data pipelines, and helping build the core reliability, performance, and scalability of our Customer's new platform.

Requirements

5-7 years of professional software development experience.Strong background in Java/Spring Boot, with proven platform modernization, migration or refactor experience.Deep understanding of event-driven architectures, concurrency, and message-basedworkflows.Familiarity with PostgreSQL, Redis API development.Experience building fault-tolerant, horizontally scalable systems in production.

Nice to have:

Experience leading legacy platform retirements or distributed system migrations.3+ years of Golang development, preferably in microservices or distributed architectures.Understanding of trading workflows, FIX messaging, or event-sourcing patterns.Knowledge of Rust, Python for auxiliary toolingFamiliarity with building gRPC and RESTful APIsExposure to domain-driven design and large-scale refactor strategies.Understanding of architectural patterns (event sourcing, REST)Experience tuning production services for performance and memory efficiency.Experience with NATS JetStream, Kafka, or Redis Streams.Proficiency in Linux, Docker, and Kubernetes environments.Strong understanding of CI/CD pipelines, observability, and infrastructure-as-code.Familiarity with AWS (EKS, RDS, Secrets Manager, CloudWatch) preferred.

Responsibilities:

Modernization and Platform Migration

Migrate the existing Spring Boot–based trading system to a modern architecture.Build new Golang microservices to substitute monolithic functionality.Establish well-defined migration plans for APIs, event streams, and data models.Maintain backward compatibility and minimise service disruption throughout the migration process.

Core Platform Development

Build and optimize high-performance Golang services for low-latency data processing.Reimplement key trading workflows (RFQ, Quote, Trade) using an event-driven model.Create standardized libraries for logging, metrics, observability, and error handling.Help define shared data models, serialization formats (Protobuf/JSON), and event/command schemas.

Event-Driven and Distributed Architecture

Apply event-sourcing and CQRS patterns across platform services.Design and tune messaging pipelines (NATS JetStream, Redis Streams, Kafka).Support reliable event replay, auditing, and versioning.Achieve high availability through stateless service design.

Infrastructure and Observability

Collaborate with DevOps to containerize and deploy services using Kubernetes and ArgoCD.Integrate tracing, metrics, and logging tools (Prometheus, OpenTelemetry, Zap).Build CI/CD pipelines for automated testing and deployment.Improve Postgres schemas and implement Redis-based caching.

Collaboration and Leadership

Collaborate with architect and team lead to ensure alignment on implementation details and technical specifications for the migrationActively participate in code reviews, providing constructive feedback focused on maximizing concurrency, performance, and maintainabilityShare expertise on idiomatic Golang best practices and system performance within the engineering teamProvide technical input during retrospectives and assist in production readiness checks for services prior to deployment

Benefits

Awesome projects with an impactUdemy courses of your choiceTeam-buildings, events, marathons & charity activities to connect and rechargeWorkshops, trainings, expert knowledge-sharing that keep you growingClear career path Absence days for work-life balanceFlexible hours & work setup - work from anywhere and organize your day your way