Senior Software Engineer (Golang)

Senior Software Engineer (Golang) Location : Remote (Brazil) Experience : 8+ years overall Engagement : ContractorAbout the RoleWe are seeking an experienced Senior Software Engineer with strong expertise in Golang, Node.js, and React to develop and enhance high-performance, scalable backend services.

The role emphasizes Go, gRPC, Kafka, Kubernetes, and cloud-native development across AWS and GCP.

You will be responsible for building robust backend services, integrating with MongoDB, streaming data via Kafka, and ensuring reliability in containerized environments.Key ResponsibilitiesDesign, implement, and maintain data-intensive Go and Node.js gRPC APIs.Build, containerize, and deploy scalable Go microservices on Kubernetes (EKS, GKE).

Refactor and modernize legacy Node.js services into idiomatic Go for improved performance and stability.Integrate and operate Apache Kafka pipelines for high-throughput event streaming.Leverage AWS and GCP cloud services to build resilient, cost-effective solutions.Troubleshoot and resolve technical issues promptly.Conduct code reviews, mentor junior engineers, and promote best practices in testing, CI / CD, and security.Participate in architectural design reviews, focusing on scalability, fault tolerance, and cost optimization.Collaborate with cross-functional teams including Product, Program Management, and QA.Provide realistic level of effort (LOE) estimates during planning cycles.Prototype and experiment with emerging technologies to improve engineering velocity.Required Skills & Experience5+ years of professional software engineering experience.3+ years of experience building production-grade, highly scalable Go services.Expertise in writing high-performance gRPC and REST clients / servers, including protobuf contracts.Hands-on experience with Kafka (stream processing, topic management, schema registry, ACLs, consumers, offsets).3+ years of experience with AWS (S3, CloudFront, EKS, etc.).1+ year of experience with GCP (Cloud Storage, Kafka, GKE, CDN, etc.).2+ years of experience designing and using MongoDB.Nice to Have2+ years developing full-stack applications using Node.js, MongoDB, Express, and React.3+ years of experience with EKS / GKE, Helm, Terraform, and CI / CD pipelines.1+ year of Linux bash scripting for automation and ops tasks.Exposure to Redis, Docker, Git, and observability stacks (Prometheus, Grafana, OpenTelemetry).

Strong problem-solving, communication, and collaboration skills in a globally distributed team.Experience with MongoDB schemas, indexing, and sharding strategies.Knowledge of ETL pipelines and CRUD operations.