Lead/Principal Go Developer

About the Role

Sigma Software is seeking a Lead/Principal Go Developer to design and build a high-load, low-latency real-time bidding platform for a strategic advertising technology project. You will shape backend architecture and own critical components for bidding, optimization, and ad delivery.

What You'll Do

• Design and implement core Back-End services for real-time bidding, optimization, and ad delivery workflows
• Build custom bidding agents for real-time bid decisioning
• Develop high-load, low-latency components supporting real-time auction and delivery mechanics
• Implement proprietary pacing, bid-shading, and optimization logic to improve campaign efficiency
• Design and integrate forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning
• Work with OpenRTB, JSON, protobuf, and other ad-tech protocols and data formats
• Integrate with data and metrics pipelines to support real-time optimization and reporting
• Implement observability, monitoring, and troubleshooting capabilities (LGTM/ELK stack)
• Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities
• What We're Looking For
• At least 7 years of relevant experience as a Back-End Developer in commercial projects
• Strong production experience with Golang
• Experience designing and building high-load, low-latency distributed systems
• Hands-on experience with JSON-based integrations, protobuf or similar protocols
• Experience with low-latency data stores and caching technologies such as Aerospike, Redis, ElastiCache or similar
• Experience with PostgreSQL or similar relational databases
• Experience building production-grade services with strong reliability, scalability and observability requirements
• Ability to work independently, reason through complex system trade-offs and contribute to architecture decisions
• At least an Upper-Intermediate level of English
• Nice to Have
• Understanding of real-time bidding systems, auction mechanics and AdTech domain
• Understanding of pacing, bid optimization, forecasting or performance advertising delivery mechanics
• Experience working on DSP, SSP, Ad Exchange, ad server or performance marketing platforms
• Experience with integration of LGTM/ELK or similar observability stacks
• Compensation & Benefits
• Competitive benefits, flexible working arrangements, and opportunities to work on challenging projects that push the boundaries of technology