We are looking for a Senior Golang Developer to work on a long term freelance mission full time, fully remote for a Client in the Marking Technology Sector.
Start date - Immediate. Immediate Joiners only please Salary - $2,500 per month (USD) Location - Fully remote - Please note, this role does not provide sponsorship or sponsorship transfer. Duration: 12 months+
Overview:Our Client is building a new backend platform to power its next-generation Influencer marketing - a scalable, secure, API-first ecosystem running on AWS. We are seeking a Senior Golang Developer to design, build, and optimize backend services forming the core of this Go-based platform. You will play a key role in developing the new Go API facade, containerized microservices, and robust integrations, while helping migrate from legacy PHP backend. This role sits at the intersection of architecture, performance, and delivery - ideal for someone who thrives in a fast paced, hands-on environment and can help define engineering standards for Go development.
RESPONSIBILITIES:Backend Development Design and implement high-performance REST APIs in Go using clean architecture principles. Develop and maintain containerized microservices running on AWS ECS/Fargate. Implement authentication, authorization, and input/output validation against Open API schemas. Integrate external systems (e.g., Hub Spot) via REST/webhooks. Write efficient and secure database queries in Postgre SQL.
Architecture & Infrastructure Collaborate with the CTO and Dev Ops to evolve the new AWS-based backend platform. Apply and extend infrastructure-as-code practices (Terraform) to ensure service consistency. Participate in blue/green deployments, CI/CD pipeline improvements (Git Hub Actions), and observability instrumentation.
Quality & Reliability Write unit, integration tests using gomock, testify, or similar frameworks. Contribute to API versioning, backward compatibility, and schema evolution. Participate in code reviews, enforce Go best practices, and ensure performance and security standards.
Collaboration Work closely with mobile and frontend teams using generated Open API clients. Partner with Dev Ops and QA engineers to ensure reliable releases and zero-downtime rollouts. Participate in technical design reviews, post-mortems, and documentation on Confluence
QUALIFICATIONS:5+ years of experience in backend engineering, with 3+ years in Golang. Strong understanding of Go concurrency, memory model, and idiomatic practices. Experience building RESTful APIs and working with Open API specifications. Hands-on experience with AWS services — ECS/Fargate, API Gateway, Secrets Manager, RDS, SQS/Event Bridge. Proficiency with Postgre SQL, including migrations and schema versioning. Experience with containerization and IaC (Terraform). Familiarity with CI/CD pipelines (Git Hub Actions or similar). Solid understanding of microservice communication, scalability, and observability (logs, metrics, tracing). Soft Skills Ownership mindset - you care about production stability, not just code. Clear communication - can explain architectural decisions and trade-offs. Collaboration with product, Dev Ops, and mobile teams. Comfortable working in a remote-first, async communication environment.
KEY SKILLS:Experience with PHP → Go migrations or legacy refactoring. Experience with Hub Spot APIs or CRM integrations. Knowledge of Graph QL, g RPC, or event-driven architectures. Familiarity with Prometheus, Grafana, and Cloud Watch for observability. Experience in multi-tenant or multi-region system design.