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 domain by joining our Stellar team. What is Stellar? It’s a community, a network, and a dedicated business unit within Sigma Software that specializes in advertising technology solutions. Over the years, we’ve had the opportunity to work with some of the largest AdTech companies in the world. We’ve helped tons of AdTech startups transform from ideas into thriving businesses. Since 2008, we’ve been working with advertising technology businesses to help them envision, build, and support their technology.

PROJECT

The project is an advanced interior decor visualization platform that allows customers to preview furniture and decor items in their home environment before purchasing. Imagine being in a store and instantly seeing how a sofa, carpet, or other items fit into your interior design — this solution makes it possible. The system integrates high-performance data pipelines, machine learning models, and visualization tools to deliver a seamless user experience.

• Lead cross-functional initiatives across multiple engineering teams
• Drive the design and architecture of complex backend systems supporting large-scale 3D and computer vision experiences
• Partner with product and engineering leadership to translate business needs into actionable engineering plans
• Conduct architecture reviews and ensure adherence to engineering excellence practices
• Mentor senior engineers, fostering technical growth and leadership skills
• Ensure backend systems are scalable, reliable, and fault-tolerant
• Oversee integration of high-throughput ETL flows and data processing pipelines
• Collaborate closely with frontend and 3D teams to deliver seamless user experiences

• 8+ years of IT experience building scalable and reliable systems
• Expert-level skills in Python, Kubernetes, PostgreSQL, AWS
• Strong hands-on experience with Django
• Proven expertise in complex ETL flows and high-throughput systems
• Deep understanding of algorithms, data structures, networking, and databases
• Experience designing fault-tolerant systems at scale
• Advanced level of English

WOULD BE A PLUS

• Background in computer vision or 3D graphics
• Familiarity with microservices architecture
• Experience with real-time rendering systems
• Knowledge of CI/CD pipelines and DevOps practices

PERSONAL PROFILE

• Strong leadership and mentorship skills
• Strategic thinker with an ownership mindset
• Excellent communication and collaboration abilities
• Passion for innovation and engineering excellence
• Adaptability to fast-paced project environments