We support enterprises, product houses, and startups with custom software solutions development and IT consulting.
Principal/Senior Backend Engineer
Location
Brazil
Posted
2 days ago
Salary
0
Seniority
Senior
Job Description
Principal/Senior Backend Engineer
Sigma Software Group
• Design and implement core backend 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
Job Requirements
- 5+ years of relevant experience as a Backend Engineer in commercial projects
- Strong backend engineering experience with C++ or 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 (Aerospike, Redis, ElastiCache, etc.)
- Experience with PostgreSQL or similar relational databases
- Proven track record of 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
- Upper-Intermediate English level
Benefits
- Competitive benefits
- Flexible working arrangements
- Opportunities to work on challenging projects
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