Senior Golang Developer

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 OpenAPI schemas. Integrate external systems (e.g., HubSpot) via REST/webhooks.
• Write efficient and secure database queries in PostgreSQL.

Architecture & Infrastructure

• Collaborate with the CTO and DevOps 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 (GitHub 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 OpenAPI clients.
• Partner with DevOps 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 OpenAPI specifications.
• Hands-on experience with AWS services — ECS/Fargate, API Gateway, Secrets Manager, RDS, SQS/EventBridge.
• Proficiency with PostgreSQL, including migrations and schema versioning.
• Experience with containerization and IaC (Terraform). Familiarity with CI/CD pipelines (GitHub 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, DevOps, and mobile teams. Comfortable working in a remote-first, async communication environment.

KEY SKILLS:

• Experience with PHP → Go migrations or legacy refactoring.
• Experience with HubSpot APIs or CRM integrations.
• Knowledge of GraphQL, gRPC, or event-driven architectures.
• Familiarity with Prometheus, Grafana, and CloudWatch for observability.
• Experience in multi-tenant or multi-region system design.