Software Architect (AdTech)

Location: Warsaw, Masovian Voivodeship, Poland. Remote or hybrid cooperation can be discussed depending on location.

Company

Join Sigma Software’s AdTech Business Unit, which develops advertising technology platforms and solutions for SSPs, DSPs, RTB infrastructure, analytics, identity frameworks, and privacy-first systems.

What you will do

• Define and drive scalable AdTech architectures and distributed cloud platforms across multiple initiatives.
• Own architectural decisions, technical direction, standards, governance, and engineering best practices.
• Lead technical discovery, architecture assessments, solution design, estimations, and Proofs of Concept.
• Translate business requirements into scalable, secure, and future-proof technical solutions.
• Drive customer-facing pre-sales activities, including presentations, architecture workshops, proposals, and technology consulting.
• Guide and mentor engineering teams on architecture implementation, scalability, performance optimization, and distributed systems design.

Requirements

• At least 7 years of commercial software development experience, including at least 3 years in architecture or technical leadership roles.
• Strong hands-on expertise in at least two of: Golang, Rust, Node.js, or C++.
• Experience designing high-load, low-latency distributed systems and cloud-native architectures.
• Strong understanding of microservices architecture, messaging systems, caching, and API design principles.
• Hands-on experience with Docker, Kubernetes, Helm, and similar tools.
• Production experience with AWS, GCP, or Azure.
• Experience with REST APIs, gRPC, WebSockets, and event streaming technologies such as Kafka, Kinesis, or Pub/Sub.
• Experience in customer-facing technical consulting and pre-sales activities.
• Strong communication, presentation, stakeholder management, ownership, independent initiative, and mentoring skills.
• At least Upper-Intermediate English required.

Nice to have

• Commercial AdTech experience and knowledge of programmatic advertising ecosystems, including SSPs, DSPs, AdServers, Header Bidding, OpenRTB, Prebid, and VAST.
• Understanding of Real-Time Bidding systems, auction mechanics, mobile advertising ecosystems, and real-time data processing.
• Experience designing SDKs, APIs, libraries, or integration frameworks.
• Familiarity with advertising analytics, fraud detection, consent management, GDPR, CCPA, and privacy-first architectures.

Culture & Benefits

• Work with international customers and more than 300 AdTech professionals.
• Collaborate with experienced specialists in programmatic advertising, distributed systems, cloud-native technologies, and AI-driven solutions.
• Remote or hybrid cooperation format can be discussed depending on location.
• Participate in strategic architecture, pre-sales, knowledge-sharing, and professional community initiatives.