April 26, 2026

Principal Software Engineer (Interior Design)

Senior • Remote

Warsaw, Poland

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.

Responsibilities

  • 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

Qualifications

  • 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

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Warsaw, Poland

25,600 - 28,800 PLN/hr

🏢 Summary: The offer is for a Principal Software Engineer to lead technical strategy and architecture for a high-impact US-based project within the Sightline domain. The role combines hands-on development in .NET and Azure with strategic leadership, driving scalable, secure solutions and integrating AI/GenAI capabilities. It involves system design ownership and guiding engineering teams in complex, global environments. 🗂️ Requirements: Extensive experience as Principal Engineer or Engineering Manager, Strong hands-on experience with .NET, Strong hands-on experience with Azure, Proven experience in large, complex global organizations, Practical experience with AI and GenAI in software development, Strong architecture and system design expertise, Ability to lead technical strategy and system design decisions 📃 Skills: .NET, Azure, AI, GenAI, Architecture, SystemDesign, Cloud, C# 🏢 Description: Working as a Principal Software Engineer, you will: Lead and drive technical strategy for a high-impact US-based project within the Sightline domain Operate at a senior leadership level, partnering with stakeholders across a complex, global organization Provide hands-on technical guidance in .NET and Azure environments, ensuring scalable and secure solutions Champion the adoption and integration of AI and GenAI capabilities across the product and engineering workflows Collaborate with cross-functional teams to define architecture, technical direction, and best practices Act as a key decision-maker in system design, balancing business needs with technical excellence Mentor senior engineers and support the growth of engineering teams Navigate and influence large organizational structures, ensuring alignment across multiple stakeholders Communicate effectively with both technical and non-technical audiences, translating complex concepts into clear insights Contribute to building a strong engineering culture focused on innovation, collaboration, and continuous improvement About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a global technology and management consultancy specializing in driving digital transformation in the financial services industry. It operates at the intersection of business and technology by combining innovative thinking with unrivalled industry knowledge to deliver endto-end data-driven solutions and fast-track digital initiatives for banking and payments, capital markets, wealth and asset management, insurance, and the energy sector. Qualifications Extensive experience as a Principal Engineer, Engineering Manager, or Senior Manager-level leader Strong hands-on expertise in .NET and Azure Proven experience working in large, global organizations with complex structures (e.g., companies like PwC or similar) Solid understanding and practical experience with AI/GenAI solutions and their application in software development Strong architectural and system design experience Excellent communication skills, with the ability to engage confidently with diverse stakeholders Balanced personality: communicative and open, yet thoughtful and professional Experience mentoring and influencing senior engineers and technical teams Ability to operate strategically while remaining close to the technology English proficiency at C1 level We offer Rate up to 180,00 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

Technology

OEConnection

Senior Software Engineer (Java/Kotlin)

Senior

Remote

Krakow, Poland

🏢 Summary: Senior Software Engineer role focused on building and scaling cloud-native e-commerce solutions for the automotive repair industry. The position involves designing backend systems, developing microservices and APIs, and shaping system architecture in a modern AWS-based environment. You will contribute to high-load distributed systems while applying best engineering practices in a fully remote setup. 🗂️ Requirements: 5+ years of backend development experience, Strong proficiency in Java or Kotlin, Experience building and optimizing microservices, Experience developing APIs (REST, SOAP, gRPC), Experience with AWS cloud services, Experience with Kubernetes and Docker, Knowledge of TDD and CI/CD practices, Experience with high-load distributed systems, Experience with relational and NoSQL databases 📃 Skills: Java, Kotlin, Ktor, Spring, Gradle, gRPC, REST, SOAP, MariaDB, Redis, dbMate, Kubernetes, Docker, ArgoCD, Grafana, Prometheus, OpenTelemetry, ELK, GitHub, AWS, ECR, EKS, RDS, S3 🏢 Description: Team We are seeking a highly skilled and experienced Senior Software Engineer to join our dynamic team working on PartsTech solution. You will develop e-commerce solutions revolutionizing the automotive repair industry with cutting-edge, scalable software solutions. We’re on a mission to simplify and modernize how repair shops source and manage parts. About You You will play a key role in shaping our backend systems and technical direction, working with a modern tech stack in a collaborative, fast-paced environment. You will play a key role in developing cloud-native applications, mentoring engineers, and contributing to the development of scalable system architectures. The ideal candidate will have strong background in backend programming languages ( Java/Kotlin ), building and optimizing microservices, developing APIs (REST, SOAP, gRPC) , implementing best practices like TDD and CI/CD and utilizing Amazon Web Services (AWS) . We value strong problem-solving skills, experience with high-load distributed systems, and a proactive approach to software development. Tech stack Programming & frameworks: Kotlin, Ktor/Spring Boot, Gradle, gRPC Databases: MariaDB, dbMate, Redis Containers & orchestration: Kubernetes (K8s), Docker, ArgoCD Monitoring: Grafana, Prometheus, OpenTelemetry, ELK Stack Version Control: GitHub Actions Cloud Platforms: AWS (ECR, EKS, RDS, S3) If you have 5+ years of experience, enjoy solving complex problems, and want to contribute to innovative projects, we would love to connect! We offer the opportunity to work fully remotely.