Principal Vue.js/Node.js Engineer (Swedish Ad Platform)

🏢 Summary: Senior TypeScript/Vue.js Developer role focused on leading front-end architecture for a next-generation AdTech platform transitioning from a monolithic system to a scalable, API-driven ecosystem. The position involves designing high-performance, modular Vue 3 applications, collaborating on API contracts, and deploying solutions within a microservices-based AWS environment. The role combines hands-on development, architectural ownership, and technical leadership. 🗂️ Requirements: 7+ years JavaScript experience, Strong Vue.js expertise, Strong TypeScript expertise, Deep knowledge of Vue3 CompositionAPI, Experience designing API contracts with backend teams, Experience with complex asynchronous data flows, Experience deploying frontend applications in AWS, Hands-on experience with Vite, Hands-on experience with Cypress, Hands-on experience with Vitest, AdTech domain knowledge, Upper-Intermediate English 📃 Skills: JavaScript, TypeScript, Vue, Vue3, CompositionAPI, AWS, Vite, Cypress, Vitest, APIs, Microservices, DevOps, AdTech, Architecture, Testing 🏢 Description: Are you passionate about building scalable, high-performance front-end solutions? At Sigma Software, we are looking for a Senior TypeScript/Vue.js Developer to join our distributed team and help shape the future of a next-generation AdTech platform. You will work alongside talented engineers and contribute to transforming a complex monolithic system into a modern, API-driven architecture. We at Sigma Software value innovation, collaboration, and professional growth. Joining us means working on impactful projects with global reach, while enjoying a supportive environment that encourages learning and knowledge sharing. Customer Our Customer is a Swedish AdTech company that transforms the way publishers and advertisers interact. They provide state-of-the-art self-serve advertising platforms that enable seamless, direct transactions between advertisers and some of the world’s largest publishers. Their mission is to make advertising more accessible, automated, and efficient through innovative technology. Together, we serve globally recognized clients, including TripAdvisor, Bloomberg, The Washington Post, Opera, Dow Jones, etc. Project The project represents a strategic transition to a Platform-First, API-driven architecture. The company is moving away from monolithic, client-specific codebases to a standardized ecosystem. As a Senior TypeScript/Vue.js Developer, you will be the technical visionary for the platforms, ensuring the technology remains high-performing and scalable. Responsibilities Define and lead front-end architecture strategy using Vue 3 with TypeScript, focusing on modularity, scalability, and performance Collaborate with the Platform Team to design, document, and enforce API contracts optimized for low-latency AdTech requirements Participate in system design to align front-end requirements with back-end architecture, supporting complex UI states and asynchronous data flows Partner with DevOps to deploy and scale front-end solutions in AWS, ensuring smooth integration within a microservices ecosystem Mentor and guide engineering teams, promoting an API-first mindset and rigorous TypeScript usage Requirements At least 7 years of hands-on experience in JavaScript and modern front-end development Strong expertise in Vue.js and TypeScript, including deep knowledge of Vue 3 Composition API Proven ability to collaborate with back-end/platform teams to design robust API contracts and manage complex data orchestration Experience deploying and scaling front-end applications in AWS environments Hands-on experience with Vite and modern testing tools (Cypress, Vitest) Solid AdTech domain knowledge, including advertising data models and workflows Upper-Intermediate English proficiency Personal Profile Strong leadership and mentoring skills Excellent communication and collaboration abilities Analytical mindset with a focus on scalability and maintainability

🏢 Summary: Senior TypeScript/Vue.js Developer role focused on leading front-end architecture for a next-generation AdTech platform transitioning from monolithic to API-driven architecture. The position involves building scalable, high-performance Vue 3 applications, defining API contracts, and ensuring seamless integration within a microservices ecosystem on AWS. You will drive technical strategy and support modernization of a complex advertising platform. 🗂️ Requirements: 7+ years of JavaScript and modern front-end development experience, Strong expertise in Vue.js and TypeScript, Deep knowledge of Vue 3 Composition API, Experience designing and integrating API contracts with back-end teams, Experience with AWS deployment and scaling of front-end applications, Hands-on experience with Vite, Experience with Cypress and Vitest, AdTech domain knowledge including advertising data models and workflows 📃 Skills: JavaScript, TypeScript, Vue, Vue3, CompositionAPI, AWS, Vite, Cypress, Vitest, APIs, Microservices, AdTech 🏢 Description: Are you passionate about building scalable, high-performance front-end solutions? At Sigma Software, we are looking for a Senior TypeScript/Vue.js Developer to join our distributed team and help shape the future of a next-generation AdTech platform. You will work alongside talented engineers and contribute to transforming a complex monolithic system into a modern, API-driven architecture. We at Sigma Software value innovation, collaboration, and professional growth. Joining us means working on impactful projects with global reach, while enjoying a supportive environment that encourages learning and knowledge sharing. Customer Our Customer is a Swedish AdTech company that transforms the way publishers and advertisers interact. They provide state-of-the-art self-serve advertising platforms that enable seamless, direct transactions between advertisers and some of the world’s largest publishers. Their mission is to make advertising more accessible, automated, and efficient through innovative technology. Together, we serve globally recognized clients, including TripAdvisor, Bloomberg, The Washington Post, Opera, Dow Jones, etc. Project The project represents a strategic transition to a Platform-First, API-driven architecture. The company is moving away from monolithic, client-specific codebases to a standardized ecosystem. As a Senior TypeScript/Vue.js Developer, you will be the technical visionary for the platforms, ensuring the technology remains high-performing and scalable. Responsibilities Define and lead front-end architecture strategy using Vue 3 with TypeScript, focusing on modularity, scalability, and performance Collaborate with the Platform Team to design, document, and enforce API contracts optimized for low-latency AdTech requirements Participate in system design to align front-end requirements with back-end architecture, supporting complex UI states and asynchronous data flows Partner with DevOps to deploy and scale front-end solutions in AWS, ensuring smooth integration within a microservices ecosystem Mentor and guide engineering teams, promoting an API-first mindset and rigorous TypeScript usage Requirements At least 7 years of hands-on experience in JavaScript and modern front-end development Strong expertise in Vue.js and TypeScript, including deep knowledge of Vue 3 Composition API Proven ability to collaborate with back-end/platform teams to design robust API contracts and manage complex data orchestration Experience deploying and scaling front-end applications in AWS environments Hands-on experience with Vite and modern testing tools (Cypress, Vitest) Solid AdTech domain knowledge, including advertising data models and workflows Upper-Intermediate English proficiency Personal Profile Strong leadership and mentoring skills Excellent communication and collaboration abilities Analytical mindset with a focus on scalability and maintainability

🏢 Summary: Senior TypeScript/Node.js Developer role focused on transforming a global AdTech platform into a scalable, API-first, multi-tenant microservices architecture on AWS serverless. The position involves designing high-performance services, governing API standards, and driving architectural standardization toward a reusable platform model. Work centers on performance, reliability, cost-efficiency, and strict data isolation at scale. 🗂️ Requirements: 7+ years production experience as Back-End Developer, Strong expertise in TypeScript, Strong expertise in Node.js, Experience designing API-first microservice architectures, Deep knowledge of AWS serverless: Lambda, API Gateway, DynamoDB, EventBridge, Experience with IaC tools: CloudFormation or Terraform, Experience designing RESTful APIs, Experience designing GraphQL APIs, Understanding of multi-tenant architecture, Experience with logical data isolation patterns, AdTech domain knowledge, Experience building standardized multi-client platforms, Focus on performance and reliability in distributed systems, Upper-Intermediate English level 📃 Skills: TypeScript, Node.js, AWS, Lambda, APIGateway, DynamoDB, EventBridge, CloudFormation, Terraform, REST, GraphQL, OpenAPI, JWT, AdCP, Microservices, Serverless, IaC 🏢 Description: Are you passionate about building high-performance platforms that serve millions of users worldwide? We are looking for a Senior TypeScript/Node.js Developer to join our team and help transform a global AdTech product into a scalable, platform-first architecture. At Sigma Software, we value engineering excellence, innovation, and collaboration, offering the opportunity to work on cutting-edge projects with world-class customers. You will have the chance to work with advanced AWS serverless solutions, contribute to strategic architectural decisions, and enjoy a supportive environment with professional growth opportunities. CUSTOMER Our Customer is a Sweden-based AdTech company specializing in advanced self-serve advertising platforms that automate direct transactions between advertisers and major global publishers. Their technology removes traditional friction in ad sales by enabling automation, transparency, and operational efficiency at scale. Platforms are trusted by internationally recognized publishers including TripAdvisor, Bloomberg, The Washington Post, Opera, and Dow Jones, handling millions of transactions worldwide. PROJECT The project is a strategic architectural transformation toward a Platform-First approach. The company is transitioning from monolithic, client-specific implementations to a standardized, API-driven, multi-tenant ecosystem of reusable microservices. These services power the entire product suite, remaining independent, scalable, and decoupled from frontend or customer-specific customization. Key Technologies: TypeScript, Node.js, AWS Lambda, API Gateway, DynamoDB, EventBridge, IaC tools (CloudFormation or Terraform), RESTful/GraphQL APIs. RESPONSIBILITIES Own and govern API design by defining and maintaining strict OpenAPI specifications before implementation begins Design and implement high-performance microservices using TypeScript and Node.js within a serverless AWS architecture Drive FinOps excellence by architecting solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge to achieve a Scale-to-Zero cost model Enforce logical isolation patterns across services, ensuring strict tenant data separation via JWT policies and Row-Level Security Maintain adherence to the Ad Context Protocol (AdCP) across all data models for consistent AdTech data language Develop reusable “Golden Path” templates, shared libraries, and engineering best practices Conduct rigorous code reviews focusing on latency (<200ms), availability (99.99%), and observability Translate product and commercial requirements into scalable technical specifications Contribute to evolving the overall platform architecture toward standardization and reusability REQUIREMENTS At least 7 years of production experience as a Back-End Developer Strong hands-on expertise with TypeScript and Node.js Proven experience designing API-first microservice architectures Deep expertise in AWS serverless ecosystem: Lambda, API Gateway, DynamoDB, EventBridge, and IaC tools (CloudFormation or Terraform) Solid AdTech domain knowledge, including advertising data models and workflows Extensive experience designing RESTful and GraphQL APIs with versioning, backward compatibility, and documentation Strong understanding of multi-tenant architecture and logical data isolation patterns Experience building standardized platforms for multiple clients instead of custom solutions Strong focus on performance, reliability, and observability in distributed systems At least an Upper-Intermediate level of English WILL BE A PLUS Experience as a Lead Back-End Developer PERSONAL PROFILE Proactive and detail-oriented with a strong sense of ownership Enjoys solving complex architectural challenges Thrives in collaborative, cross-functional teams Committed to delivering high-quality solutions meeting demanding performance and reliability standards

🏢 Summary: Senior TypeScript/Node.js Developer role focused on transforming a global AdTech product into a scalable, platform-first, API-driven microservices architecture. The position involves designing high-performance serverless solutions on AWS, enforcing strict API standards, and ensuring multi-tenant data isolation. You will drive architectural decisions to build reusable, scalable services powering millions of transactions worldwide. 🗂️ Requirements: 7+ years production experience as Back-End Developer, Strong expertise in TypeScript and Node.js, Experience designing API-first microservice architectures, Deep knowledge of AWS serverless (Lambda, API Gateway, DynamoDB, EventBridge), Experience with IaC tools (CloudFormation or Terraform), Experience designing RESTful and GraphQL APIs with versioning and backward compatibility, Understanding of multi-tenant architecture and logical data isolation, Knowledge of AdTech data models and workflows, Focus on performance, reliability, and observability in distributed systems, Upper-Intermediate English level 📃 Skills: TypeScript, Node.js, AWS, Lambda, APIGateway, DynamoDB, EventBridge, CloudFormation, Terraform, REST, GraphQL, OpenAPI, JWT, AdCP, Microservices, Serverless, IaC 🏢 Description: Are you passionate about building high-performance platforms that serve millions of users worldwide? We are looking for a Senior TypeScript/Node.js Developer to join our team and help transform a global AdTech product into a scalable, platform-first architecture. At Sigma Software, we value engineering excellence, innovation, and collaboration, offering the opportunity to work on cutting-edge projects with world-class customers. You will have the chance to work with advanced AWS serverless solutions, contribute to strategic architectural decisions, and enjoy a supportive environment with professional growth opportunities. CUSTOMER Our Customer is a Sweden-based AdTech company specializing in advanced self-serve advertising platforms that automate direct transactions between advertisers and major global publishers. Their technology removes traditional friction in ad sales by enabling automation, transparency, and operational efficiency at scale. Platforms are trusted by internationally recognized publishers including TripAdvisor, Bloomberg, The Washington Post, Opera, and Dow Jones, handling millions of transactions worldwide. PROJECT The project is a strategic architectural transformation toward a Platform-First approach. The company is transitioning from monolithic, client-specific implementations to a standardized, API-driven, multi-tenant ecosystem of reusable microservices. These services power the entire product suite, remaining independent, scalable, and decoupled from frontend or customer-specific customization. Key Technologies: TypeScript, Node.js, AWS Lambda, API Gateway, DynamoDB, EventBridge, IaC tools (CloudFormation or Terraform), RESTful/GraphQL APIs. RESPONSIBILITIES Own and govern API design by defining and maintaining strict OpenAPI specifications before implementation begins Design and implement high-performance microservices using TypeScript and Node.js within a serverless AWS architecture Drive FinOps excellence by architecting solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge to achieve a Scale-to-Zero cost model Enforce logical isolation patterns across services, ensuring strict tenant data separation via JWT policies and Row-Level Security Maintain adherence to the Ad Context Protocol (AdCP) across all data models for consistent AdTech data language Develop reusable “Golden Path” templates, shared libraries, and engineering best practices Conduct rigorous code reviews focusing on latency (<200ms), availability (99.99%), and observability Translate product and commercial requirements into scalable technical specifications Contribute to evolving the overall platform architecture toward standardization and reusability REQUIREMENTS At least 7 years of production experience as a Back-End Developer Strong hands-on expertise with TypeScript and Node.js Proven experience designing API-first microservice architectures Deep expertise in AWS serverless ecosystem: Lambda, API Gateway, DynamoDB, EventBridge, and IaC tools (CloudFormation or Terraform) Solid AdTech domain knowledge, including advertising data models and workflows Extensive experience designing RESTful and GraphQL APIs with versioning, backward compatibility, and documentation Strong understanding of multi-tenant architecture and logical data isolation patterns Experience building standardized platforms for multiple clients instead of custom solutions Strong focus on performance, reliability, and observability in distributed systems At least an Upper-Intermediate level of English WILL BE A PLUS Experience as a Lead Back-End Developer PERSONAL PROFILE Proactive and detail-oriented with a strong sense of ownership Enjoys solving complex architectural challenges Thrives in collaborative, cross-functional teams Committed to delivering high-quality solutions meeting demanding performance and reliability standards

🏢 Summary: Seeking a Principal Software Engineer to lead the design and delivery of enterprise-scale software and AI-driven platform solutions within a global engineering team. The role focuses on technical leadership, scalable application development, CI/CD automation, and building AI-powered systems using large language models. Candidates will collaborate with architects and engineers to drive innovation, engineering standards, and continuous improvement initiatives. 🗂️ Requirements: 10+ years of experience in Software or Platform Engineering, Proficiency in C# or Java or Python, Experience designing and debugging enterprise applications, Hands-on experience with CI/CD pipelines, Experience with GitHub and Azure DevOps, Experience building AI-powered applications using LLMs, Experience fine-tuning language models, Knowledge of embedding models and semantic search, Experience designing agentic AI systems, Ability to design AI evaluation frameworks and A/B testing, Strong understanding of software engineering principles and architecture 📃 Skills: C#, Java, Python, GitHub, Azure, DevOps, LLMs, AI, CI/CD, Kubernetes, Docker, AWS, GCP, Agile 🏢 Description: About the Client Our client is a global professional services organization that helps leading enterprises deliver digital transformation, technology modernization, and AI-driven innovation. Operating across multiple international markets, the company partners with organizations to build scalable, secure, and business-focused technology solutions. About the Role We are looking for an experienced Principal Software Engineer to join a global engineering team delivering enterprise-scale technology solutions. In this role, you will take ownership of designing, developing, and maintaining complex software and platform solutions while ensuring they align with both business and technical requirements. You will collaborate closely with engineering and architecture teams, solve complex technical challenges, and provide technical leadership throughout the software development lifecycle. This position also involves driving engineering standards, mentoring team members, and contributing to continuous improvement initiatives. Key Responsibilities Lead the design, development, delivery, and maintenance of software and platform solutions. Develop high-quality, scalable, and maintainable code while performing debugging, testing, and troubleshooting. Provide technical leadership and guidance across engineering teams. Collaborate with software engineers and architects to design innovative technical solutions. Ensure engineering best practices, coding standards, and development processes are consistently followed. Drive continuous improvement initiatives across development and platform engineering. Support CI/CD implementation and software delivery automation. Requirements Must Have 10+ years of professional experience in Software or Platform Engineering. Strong programming skills in at least one of the following languages: C# Java Python Extensive experience designing, developing, and debugging enterprise applications. Hands-on experience with CI/CD pipelines and automation tools such as GitHub and Azure DevOps. Experience building AI-powered applications using Large Language Models (LLMs). Experience fine-tuning language models for use cases such as text generation, summarization, or question answering. Strong understanding of embedding models and their applications, including semantic search, similarity matching, clustering, and information retrieval. Experience designing and implementing agentic AI systems that integrate language models with external tools and services. Ability to design evaluation frameworks for AI models, including performance benchmarking, metrics development, and A/B testing. Strong understanding of software engineering principles, architecture, and development best practices. Nice to Have Experience with Kubernetes and Docker. Cloud certifications (Microsoft Azure, AWS, or Google Cloud). Experience working with Agile or other modern software delivery methodologies. Bachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related field. What We Offer Opportunity to work on large-scale international technology and AI transformation projects. Exposure to modern cloud technologies, enterprise platforms, and cutting-edge AI solutions. Collaborative environment with highly experienced engineering and architecture teams. Opportunities for continuous learning, technical growth, and professional development. A culture that encourages innovation, knowledge sharing, and continuous improvement. The opportunity to take ownership of complex technical initiatives and make a meaningful impact on enterprise-scale solutions.

🏢 Summary: Senior Principal Software Engineer role focused on designing and delivering enterprise-scale software and AI-powered platform solutions in a global engineering environment. The position involves technical leadership, software architecture, CI/CD automation, and development of AI systems using large language models and embedding technologies. The role also includes mentoring engineers, driving engineering standards, and contributing to large-scale cloud and digital transformation initiatives. 🗂️ Requirements: 10+ years of Software Engineering or Platform Engineering experience, Proficiency in C# or Java or Python, Experience designing, developing, and debugging enterprise applications, Hands-on experience with CI/CD pipelines, Experience with GitHub, Experience with Azure DevOps, Experience building AI-powered applications using LLMs, Experience fine-tuning language models, Knowledge of embedding models and semantic search, Experience designing agentic AI systems, Ability to create AI evaluation frameworks and benchmarking, Strong understanding of software engineering principles and architecture, Bachelor's degree in Computer Science, Engineering, IT, Mathematics, or related field 📃 Skills: C#, Java, Python, GitHub, Azure, AzureDevOps, CI/CD, LLMs, AI, Kubernetes, Docker, AWS, GCP, Agile 🏢 Description: About the Client Our client is a global professional services organization that helps leading enterprises deliver digital transformation, technology modernization, and AI-driven innovation. Operating across multiple international markets, the company partners with organizations to build scalable, secure, and business-focused technology solutions. About the Role We are looking for an experienced Principal Software Engineer to join a global engineering team delivering enterprise-scale technology solutions. In this role, you will take ownership of designing, developing, and maintaining complex software and platform solutions while ensuring they align with both business and technical requirements. You will collaborate closely with engineering and architecture teams, solve complex technical challenges, and provide technical leadership throughout the software development lifecycle. This position also involves driving engineering standards, mentoring team members, and contributing to continuous improvement initiatives. Key Responsibilities Lead the design, development, delivery, and maintenance of software and platform solutions. Develop high-quality, scalable, and maintainable code while performing debugging, testing, and troubleshooting. Provide technical leadership and guidance across engineering teams. Collaborate with software engineers and architects to design innovative technical solutions. Ensure engineering best practices, coding standards, and development processes are consistently followed. Drive continuous improvement initiatives across development and platform engineering. Support CI/CD implementation and software delivery automation. Requirements Must Have 10+ years of professional experience in Software or Platform Engineering. Strong programming skills in at least one of the following languages: C# Java Python Extensive experience designing, developing, and debugging enterprise applications. Hands-on experience with CI/CD pipelines and automation tools such as GitHub and Azure DevOps. Experience building AI-powered applications using Large Language Models (LLMs). Experience fine-tuning language models for use cases such as text generation, summarization, or question answering. Strong understanding of embedding models and their applications, including semantic search, similarity matching, clustering, and information retrieval. Experience designing and implementing agentic AI systems that integrate language models with external tools and services. Ability to design evaluation frameworks for AI models, including performance benchmarking, metrics development, and A/B testing. Strong understanding of software engineering principles, architecture, and development best practices. Nice to Have Experience with Kubernetes and Docker. Cloud certifications (Microsoft Azure, AWS, or Google Cloud). Experience working with Agile or other modern software delivery methodologies. Bachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related field. What We Offer Opportunity to work on large-scale international technology and AI transformation projects. Exposure to modern cloud technologies, enterprise platforms, and cutting-edge AI solutions. Collaborative environment with highly experienced engineering and architecture teams. Opportunities for continuous learning, technical growth, and professional development. A culture that encourages innovation, knowledge sharing, and continuous improvement. The opportunity to take ownership of complex technical initiatives and make a meaningful impact on enterprise-scale solutions.

🏢 Summary: Senior engineering role focused on designing and delivering enterprise-scale software and AI-powered platform solutions. The position involves technical leadership, hands-on development, CI/CD automation, and building applications using large language models and agentic AI systems. Candidates will work on global digital transformation and cloud modernization projects in a collaborative engineering environment. 🗂️ Requirements: 10+ years in Software or Platform Engineering, Proficiency in C# or Java or Python, Experience designing and debugging enterprise applications, Hands-on experience with CI/CD pipelines, Experience with GitHub, Experience with Azure DevOps, Experience building AI-powered applications with LLMs, Experience fine-tuning language models, Knowledge of embedding models and semantic search, Experience designing agentic AI systems, Ability to create AI evaluation frameworks and benchmarking, Strong understanding of software engineering principles and architecture 📃 Skills: C#, Java, Python, GitHub, Azure, DevOps, LLMs, AI, Kubernetes, Docker, AWS, GCP, CI/CD, Agile 🏢 Description: About the Client Our client is a global professional services organization that helps leading enterprises deliver digital transformation, technology modernization, and AI-driven innovation. Operating across multiple international markets, the company partners with organizations to build scalable, secure, and business-focused technology solutions. About the Role We are looking for an experienced Principal Software Engineer to join a global engineering team delivering enterprise-scale technology solutions. In this role, you will take ownership of designing, developing, and maintaining complex software and platform solutions while ensuring they align with both business and technical requirements. You will collaborate closely with engineering and architecture teams, solve complex technical challenges, and provide technical leadership throughout the software development lifecycle. This position also involves driving engineering standards, mentoring team members, and contributing to continuous improvement initiatives. Key Responsibilities Lead the design, development, delivery, and maintenance of software and platform solutions. Develop high-quality, scalable, and maintainable code while performing debugging, testing, and troubleshooting. Provide technical leadership and guidance across engineering teams. Collaborate with software engineers and architects to design innovative technical solutions. Ensure engineering best practices, coding standards, and development processes are consistently followed. Drive continuous improvement initiatives across development and platform engineering. Support CI/CD implementation and software delivery automation. Requirements Must Have 10+ years of professional experience in Software or Platform Engineering. Strong programming skills in at least one of the following languages: C# Java Python Extensive experience designing, developing, and debugging enterprise applications. Hands-on experience with CI/CD pipelines and automation tools such as GitHub and Azure DevOps. Experience building AI-powered applications using Large Language Models (LLMs). Experience fine-tuning language models for use cases such as text generation, summarization, or question answering. Strong understanding of embedding models and their applications, including semantic search, similarity matching, clustering, and information retrieval. Experience designing and implementing agentic AI systems that integrate language models with external tools and services. Ability to design evaluation frameworks for AI models, including performance benchmarking, metrics development, and A/B testing. Strong understanding of software engineering principles, architecture, and development best practices. Nice to Have Experience with Kubernetes and Docker. Cloud certifications (Microsoft Azure, AWS, or Google Cloud). Experience working with Agile or other modern software delivery methodologies. Bachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related field. What We Offer Opportunity to work on large-scale international technology and AI transformation projects. Exposure to modern cloud technologies, enterprise platforms, and cutting-edge AI solutions. Collaborative environment with highly experienced engineering and architecture teams. Opportunities for continuous learning, technical growth, and professional development. A culture that encourages innovation, knowledge sharing, and continuous improvement. The opportunity to take ownership of complex technical initiatives and make a meaningful impact on enterprise-scale solutions.

🏢 Summary: Principal Software Engineer role focused on leading the design and architecture of a scalable interior decor visualization platform integrating high-performance data pipelines and machine learning. The position involves building and overseeing complex backend systems that support large-scale 3D and visualization experiences. The engineer will drive technical excellence across cross-functional teams and ensure reliability and fault tolerance at scale. 🗂️ Requirements: 8+ years of experience building scalable and reliable systems, Expert-level proficiency in Python, Expert-level proficiency in Kubernetes, Expert-level proficiency in PostgreSQL, Expert-level proficiency in AWS, Strong hands-on experience with Django, Proven experience with complex ETL flows, Experience with high-throughput systems, Deep understanding of algorithms, Deep understanding of data structures, Deep understanding of networking, Deep understanding of databases, Experience designing fault-tolerant systems at scale 📃 Skills: Python, Kubernetes, PostgreSQL, AWS, Django, ETL, Algorithms, DataStructures, Networking, Databases 🏢 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 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. Requirements 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 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

🏢 Summary: Principal Software Engineer role focused on leading the architecture and development of a large-scale interior decor visualization platform. The position involves designing scalable backend systems, high-throughput data pipelines, and supporting 3D and computer vision experiences. The engineer will drive cross-team technical initiatives and ensure system reliability and performance at scale. 🗂️ Requirements: 8+ years of experience building scalable and reliable systems, Expert-level proficiency in Python, Strong hands-on experience with Django, Expert-level knowledge of Kubernetes, Expert-level knowledge of PostgreSQL, Expert-level knowledge of AWS, Proven experience with complex ETL flows, Experience with high-throughput data processing systems, Deep understanding of algorithms and data structures, Strong knowledge of networking and databases, Experience designing fault-tolerant systems at scale 📃 Skills: Python, Django, Kubernetes, PostgreSQL, AWS, ETL, Algorithms, DataStructures, Networking, Databases, Microservices 🏢 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 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

🏢 Summary: Principal Site Reliability Engineer role leading infrastructure strategy for an AI-driven SaaS platform in the finance domain. The position focuses on scaling, securing, and optimizing cloud-based systems while driving automation, reliability, and performance. You will shape CI/CD, observability, and infrastructure practices in a high-growth environment. 🗂️ Requirements: 8+ years in Site Reliability Engineering or DevOps, 2+ years in Principal or Lead role, Experience in infrastructure modernization and scaling, Strong proficiency in Python, Expertise in AWS cloud platforms, Experience with AWS ECS and EKS, Experience designing and optimizing CI/CD pipelines, Experience with Terraform for infrastructure-as-code, Strong knowledge of monitoring and observability practices 📃 Skills: Python, AWS, ECS, EKS, Terraform, GitHub, Buildkite, CICD, Monitoring, Observability 🏢 Description: Are you ready to lead infrastructure strategy for a cutting‑edge AI‑driven SaaS platform? We are looking for a Principal Site Reliability Engineer with a proven track record in scaling, optimizing, and securing cloud‑based systems. This senior role offers the opportunity to shape the reliability and performance of a platform used by finance teams worldwide. In this role, you will be part of a dynamic engineering environment where your expertise will directly influence product stability and growth. You will work with advanced cloud technologies, automation tools, and AI-driven solutions, contributing to projects that push the boundaries of innovation. If you are ready to take on strategic responsibility and make a tangible impact, apply now and join us in building the future of reliable, scalable systems. Customer Sigma Software is partnering with a fast‑growing AI‑driven SaaS platform serving finance and accounting teams in high‑growth businesses. The platform automates critical workflows — from billing and collections to revenue recognition and reporting, ensuring compliance and accelerating cash flow. Leveraging advanced AI, it reduces manual work, increases operational efficiency, and supports scalability for customers worldwide. Project The project focuses on building and scaling an AI-powered SaaS solution for finance automation. It integrates advanced machine learning models with robust cloud infrastructure to deliver secure, compliant, and high‑performance services. The engineering culture emphasizes automation, resilience, and operational excellence. Requirements At least 8 years of experience in Site Reliability Engineering or DevOps roles, including 2+ years in a Principal or Lead position Proven experience in infrastructure modernization and scaling initiatives for high‑growth environments Strong proficiency in Python Deep expertise in cloud platforms and container orchestration tools such as AWS ECS and EKS Solid experience in CI/CD pipeline design and optimization using tools like GitHub Actions and Buildkite Proficiency in infrastructure‑as‑code tools such as Terraform Strong knowledge of monitoring, observability, and performance optimization practices Upper-Intermediate level of spoken and written English Would be a plus: Experience with monorepos (Turborepo, pnpm) Familiarity with modern TypeScript tools (swc, biome, oxc) Knowledge of NestJS, NextJS, and testing frameworks (Jest, Vitest) Personal Profile Excellent leadership, communication, and decision‑making abilities Ability to work independently and make pragmatic build‑vs‑buy decisions in fast‑paced environments Responsibilities Define and lead infrastructure and reliability strategy across the platform Design scalable, resilient systems in collaboration with engineering teams Optimize build, testing, and deployment processes for speed and stability Establish and uphold best practices for CI/CD, monitoring, and observability Lead incident response and drive continuous improvement post‑incident Automate workflows to reduce operational toil and risk Mentor engineers and foster a culture of operational excellence Make strategic build‑vs‑buy decisions balancing speed, quality, and sustainability