Lead/Principal Go Developer

About the Position

Are you ready to take on a high-impact role in building cutting-edge advertising technology? We are looking for a Lead/Principal Go Developer to join our team and design a high-load, low-latency real-time bidding platform.

At Sigma Software, we deliver innovative, scalable solutions that empower industries and drive measurable results. You will work alongside talented professionals in a culture that values expertise, collaboration, and continuous growth.

Why join us? We offer competitive benefits, flexible working arrangements, and opportunities to work on challenging projects that push the boundaries of technology.

Responsibilities

• 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

Requirements

• 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

We Offer

• Competitive benefits
• Flexible working arrangements
• Opportunities to work on challenging projects that push the boundaries of technology

About the Company

Our customer is a globally recognized technology-driven company operating in the digital advertising space. They specialize in delivering scalable, high-performance solutions that empower advertisers to optimize campaigns in real time. With a strong culture of innovation and excellence, they are committed to building platforms that shape the future of programmatic advertising.

The project is a strategic self-service advertising solution designed to make streaming inventory more accessible, measurable, and performance-driven for advertisers of all sizes. It includes a real-time bidding and optimization platform capable of handling high-load, low-latency auction mechanics. The system integrates forecasting.

Why Us

• Diversity of domains and business
• Wide selection of technologies
• Medical and legal support
• Cool and vibrant community of professionals
• Continuous education and growth opportunities
• Flexible schedule
• Remote work
• Stylish and comfortable office (for your choice of where to work)
• Sports events and communities

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