Kyiv, Ukraine · Hybrid
Company Description We are seeking a Senior/Principal AI Engineer to join our Stellar AdTech Business Unit at Sigma Software. This is a full-time role with a flexible hybrid/remote work option, ideal for an experienced p…
Skills: AI Architecture, Multi-agent Orchestration, RAG Pipelines, Python, TypeScript
São Paulo, São Paulo, Brazil · Remote OK
Company Description Are you a Senior React Native Developer passionate about building high-quality mobile applications with seamless user experiences? This role offers the opportunity to work remotely from anywhere in Br…
Skills: React Native, React, TypeScript, GitHub, Mobile UI/UX
Warsaw, Masovian Voivodeship, Poland · On-site
Company Description We’re looking for a Senior Full-Stack Developer to join our team and help build an innovative digital product for the interior decor industry. You will work on an advanced platform that allows custome…
Skills: TypeScript, Next.js, React, Redux, Three.js
Warsaw, Masovian Voivodeship, Poland · On-site
Company Description Are you ready to take ownership of impactful initiatives that shape the future of our company and deliver real value to global industries? We are looking for a Project Manager with proven experience i…
Skills: Project Management, Agile, Scrum, Waterfall, SDLC
Warsaw, Masovian Voivodeship, Poland · On-site
Company Description Join Sigma Software as a Senior Test Engineer and help shape the quality of a cutting-edge social shopping platform that blends e-commerce with social networking. This role offers the opportunity to w…
Skills: Exploratory Testing, Mobile App Testing, iOS Testing, Android Testing, Agile Workflows
Warsaw, Masovian Voivodeship, Poland · Remote OK
Company Description Are you passionate about building scalable, reliable data systems that power real-world solutions? We are looking for a Senior Data Engineer to join our team and work remotely from Europe, Ukraine, or…
Skills: Java, Scala, SQL, GCP Dataflow, REST APIs
Warsaw, Masovian Voivodeship, Poland · On-site
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Skills: SQL, Python, ELT Pipelines, Data Warehousing, Data Lakes
Warsaw, Masovian Voivodeship, Poland · On-site
Company Description We are looking for a Principal Software Engineer to join our team and work on an innovative interior decor visualization platform. You can become part of a team of over 300 experts in the AdTech domai…
Skills: Python, Kubernetes, PostgreSQL, AWS, Django
Kyiv, Ukraine · On-site
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Bucharest, Romania · On-site
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Warsaw, Masovian Voivodeship, Poland · On-site
Company Description We are looking for a skilled Embedded Engineer to join our growing team and support customers in delivering IoT-driven solutions. As our Embedded department continues to expand, we are seeking profess…
Skills: C, Cloud Connectivity, FOTA, LTE, BLE
Kyiv, Ukraine · On-site
Company Description Are you eager to take ownership of a portfolio of complex, high-impact projects? Do you excel at executive-level stakeholder management and driving results in dynamic environments? We have a great opp…
Skills: Project Management, Program Management, Portfolio Management, Stakeholder Management, Risk Management
Warsaw, Masovian Voivodeship, Poland · On-site
Company Description We are seeking a highly skilled Solution Architect to drive design and delivery of cutting-edge AdTech platforms and innovations. This role offers the opportunity to contribute to impactful AdTech ini…
Skills: Software Architecture, AdTech, Distributed Systems, C++, Golang
Warsaw, Masovian Voivodeship, Poland · On-site
Company Description We are looking for an experienced Principal Software Engineer with deep expertise in Ruby to lead the technical direction of our platform and drive the development of complex, scalable, and high-perfo…
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São Paulo, São Paulo, Brazil · Remote OK
Company Description Are you ready to shape the future of financial technology with cutting-edge frontend solutions? Join Sigma Software as a Senior Frontend Engineer and work on mission‑critical systems that power global…
Skills: React, Next.js, TypeScript, JavaScript, API Integration
Warsaw, Masovian Voivodeship, Poland · Remote OK
Company Description Are you ready to architect the future of global data platforms? Sigma Software is looking for a Big Data Architect to join our team on a full-time, remote basis. You will work on a high-impact moderni…
Skills: Data Architecture, Python, Apache Airflow, n8n, Google BigQuery
Rio de Janeiro, Southeast, Brazil · On-site
Company Description Are you passionate about building cutting-edge AI-powered solutions that make a real difference? We are looking for a Senior Product Engineer with strong Full Stack capabilities to join a small, high-…
Skills: JavaScript, TypeScript, React, NestJS, REST APIs
Warsaw, Masovian Voivodeship, Poland · Remote OK
Company Description Ready to take the lead while staying hands-on with cutting-edge code? Join Sigma Software as a Senior Software Engineer / Team Lead and help shape innovative cybersecurity solutions that protect high-…
Skills: Go, JavaScript, SQL, Microservices, Team Leadership
Warsaw, Masovian Voivodeship, Poland · Remote OK
Company Description Are you passionate about making the internet a safer place? We are looking for a Middle Security Operations Researcher to join our team and help protect enterprise clients from harmful bots and online…
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Brasília, Federal District, Brazil · Remote OK
Company Description Do you enjoy building sleek, high-performance web applications? We are looking for a Middle Frontend Developer to join our Front-end Development Team. This is a full-time remote opportunity based in B…
Skills: React.js, GraphQL, JavaScript, HTML5, CSS3
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Architect and implement production-grade agentic AI systems and multi-agent frameworks for global AdTech clients. Support presales activities by defining AI use cases, technical roadmaps, and solution architectures.
Requires 5+ years of experience in AI engineering with expertise in RAG pipelines and agentic frameworks. Proficiency in Python or TypeScript and experience with major cloud AI platforms like AWS, Azure, or GCP is essential.
We are seeking a Senior/Principal AI Engineer to join our Stellar AdTech Business Unit at Sigma Software. This is a full-time role with a flexible hybrid/remote work option, ideal for an experienced professional passionate about designing production-grade agentic AI systems and influencing solution architecture for global AdTech clients.
You will work with cutting-edge multi-agent orchestration frameworks, contribute to presales activities, and design custom AI models that power large-scale, enterprise-ready solutions.
Why Join Us: Be part of a 300+ strong AdTech competence center, collaborate with top-tier global clients, and help shape the future of AI in advertising technology.
Our Stellar AdTech Business Unit specializes in Advertising Technology solutions and has been delivering innovative systems to global AdTech leaders and startups since 2008.
In this role, you will architect scalable AI-powered systems, translate complex business problems into actionable LLM-based solutions, and support presales by defining AI use cases, architectures, risks, and implementation roadmaps.
Additional requirements:
We turn ideas into products that make the world a better place
Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 24 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,000 professionals in 40+ offices across 21 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs. Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts. Since 2002, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters.
Offices: Hornsgatan 1, Stockholm, 18 46, SE · 1 Ac. Proskury Str., Kharkiv, 61070, UA · 7 Lekha Kachynskoho Str., 3rd floor, Odesa, 65026, UA · 58 Yaroslavska Str., BC Astarta, Kyiv, Kyiv 04071, UA · 7d, Naukova Str., Lviv, UA
We turn ideas into products that make the world a better place
Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 24 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,000 professionals in 40+ offices across 21 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs. Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts. Since 2002, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters.
Offices: Hornsgatan 1, Stockholm, 18 46, SE · 1 Ac. Proskury Str., Kharkiv, 61070, UA · 7 Lekha Kachynskoho Str., 3rd floor, Odesa, 65026, UA · 58 Yaroslavska Str., BC Astarta, Kyiv, Kyiv 04071, UA · 7d, Naukova Str., Lviv, UA
