Sigma Software is seeking a Lead/Principal Go Developer to design and implement core backend services for real-time bidding, optimization, and ad delivery workflows on a high-load, low-latency platform. You will build custom bidding agents for real-time bid decisioning and develop components that support real-time auction and delivery mechanics. Responsibilities include implementing proprietary pacing, bid shading, and optimization logic to improve campaign efficiency, and designing and integrating forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning. You will 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, and implement observability, monitoring, and troubleshooting capabilities using LGTM/ELK stack. Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities. Qualifications include at least 7 years of backend development experience, strong production Go experience, building high-load distributed systems, experience with JSON-based integrations, protobuf or similar protocols, experience with low-latency data stores such as Aerospike, Redis, ElastiCache or similar, and PostgreSQL or similar relational databases. English at least Upper-Intermediate. Pluses include understanding of real-time bidding systems and AdTech domain, experience with DSP/SSP/ad exchange, and familiarity with observability stacks like LGTM/ELK. The role is on-site in Kra

Sigma Software is seeking a Lead/Principal Go Developer to design and implement core backend services for real-time bidding, optimization, and ad delivery workflows on a high-load, low-latency platform. You will build custom bidding agents for real-time bid decisioning and develop components that support real-time auction and delivery mechanics. Responsibilities include implementing proprietary pacing, bid shading, and optimization logic to improve campaign efficiency, and designing and integrating forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning. You will 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, and implement observability, monitoring, and troubleshooting capabilities using LGTM/ELK stack. Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities. Qualifications include at least 7 years of backend development experience, strong production Go experience, building high-load distributed systems, experience with JSON-based integrations, protobuf or similar protocols, experience with low-latency data stores such as Aerospike, Redis, ElastiCache or similar, and PostgreSQL or similar relational databases. English at least Upper-Intermediate. Pluses include understanding of real-time bidding systems and AdTech domain, experience with DSP/SSP/ad exchange, and familiarity with observability stacks like LGTM/ELK. The role is on-site in Kra