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: Full-time remote Principal Full-Stack Engineer role with a frontend focus, leading the architecture and development of a next-generation analytics dashboard for a large-scale distributed data platform. The position combines technical leadership, hands-on development, and mentoring while building high-performance, data-driven web applications. 🗂️ Requirements: 8+ years of experience as a Full-Stack Developer, Proven experience with React, GraphQL, TypeScript, and Node.js, Experience building reporting or analytics dashboards, Hands-on experience with SQL, Looker, dbt, and Python, Strong frontend engineering and UI architecture expertise, Experience designing and deploying large-scale web applications, Ability to own features from technical design to production, Experience conducting code reviews and mentoring engineers, Experience profiling, debugging, and optimizing web applications, Knowledge of web application security best practices 📃 Skills: React, GraphQL, TypeScript, Node.js, JavaScript, SQL, Looker, dbt, Python, ETL, DistributedSystems, Security, APIs, AI 🏢 Description: Are you ready to lead the development of cutting-edge analytics dashboards? We are looking for a Principal Full-Stack Engineer with a frontend focus to join our Software Development Team. This is a full-time remote opportunity based in Warsaw, Poland, with flexibility to work from anywhere. At Sigma Software, we partner with global innovators to deliver high-performance solutions across industries. In this role, you will architect, build, and optimize a next-generation analytics dashboard for a large-scale distributed data platform, enabling customers to uncover meaningful patterns and insights. Why join us? You’ll benefit from remote work flexibility, professional growth opportunities, and the chance to work on international projects with a talented, collaborative team. Customer Our customer is a global technology provider specializing in large-scale, distributed platforms that process high volumes of data and transform raw signals into actionable insights. Their solutions serve diverse industries worldwide, enabling organizations to detect patterns, optimize operations, and respond quickly to emerging issues. They are recognized for their ability to handle extremely high and variable traffic loads with reliability and precision. Project The project focuses on designing, developing, and maintaining a next-generation analytics dashboard for a large-scale distributed data platform. This dashboard enables customers to explore and analyze their data, uncover meaningful patterns, and identify potential issues. The role involves technical leadership, architecture design, and mentoring, as well as hands-on development using modern JavaScript frameworks and APIs. Responsibilities Serve as the primary technical lead for dashboard development Design and architect the next-generation dashboard platform Lead post-mortems and coach team members on conducting thorough root cause analyses Partner closely with Product and Research teams to align features with business needs Profile, debug, optimize, and strengthen the security of web applications Contribute to an agile development process and create clear documentation Mentor junior engineers and support their professional growth Collaborate with a high-caliber engineering team focused on learning, experimentation, and technical excellence Foster a high-performance engineering culture emphasizing efficiency, collaboration, and quality Requirements 8+ years of relevant experience as a Full-Stack Developer Proven experience building modern web applications with React, GraphQL, TypeScript, and Node.js Experience creating reporting dashboards and working with data tools such as SQL, Looker, dbt, and Python Strong frontend engineering expertise with deep understanding of UI architecture and common design pitfalls Commitment to correctness, performance, and delivering clean, high-quality solutions Ability to independently own large features from technical design to production deployment Experience mentoring teammates through code reviews, design discussions, and hands-on support Problem-solving mindset with curiosity and rigor, using experimentation to find innovative solutions Familiarity with AI-assisted development tools for productivity and quality improvement Upper-Intermediate English level Will be a plus Experience with large-scale distributed systems Background in analytics platforms and ETL workflows Knowledge of security best practices for web applications Personal profile Strategic thinker with strong technical leadership skills Collaborative and supportive mentor for engineering teams Detail-oriented with a focus on correctness and performance Innovative problem solver who embraces experimentation

🏢 Summary: Senior Node.js Engineer role focused on building and scaling a secure, high-performance FinTech platform used by businesses across Europe. The position involves designing distributed systems, developing backend and frontend components, and working within a distributed agile team using modern cloud and microservices architecture. The offer emphasizes technical leadership, code quality, and collaboration on complex financial solutions. 🗂️ Requirements: 5+ years Back-End development experience, 3+ years TypeScript experience, 4+ years Node.js experience, Experience designing distributed systems, Experience building secure and scalable systems, Strong AWS experience, Frontend development experience, Understanding of microservices architecture, Experience designing and maintaining APIs, Experience with REST and/or GraphQL APIs, Knowledge of DevOps practices, Knowledge of testing best practices, Upper-Intermediate English level 📃 Skills: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL, JavaScript, ES6, DevOps, API, Testing 🏢 Description: Are you ready to take on a key role in developing cutting-edge financial solutions? We are looking for a Senior Node.js Engineer to join our distributed agile team and work on a highly secure, scalable FinTech platform used by businesses across Europe. We at Sigma Software value innovation, technical excellence, and collaboration. This position offers the opportunity to work with modern technologies such as Node.js, TypeScript, React, AWS, and microservices architecture. You’ll have the chance to work on impactful projects, enjoy flexible working arrangements, and grow your expertise alongside talented professionals. CUSTOMER Our Customer is one of Europe’s fastest-growing FinTech companies, providing a comprehensive payment platform that integrates financial services into its products. Their solutions include account management, virtual cards, bank transfers, and other advanced features. The company is known for its innovative approach to simplifying financial operations for businesses, ensuring security, scalability, and user-centric design. PROJECT The project focuses on building and enhancing a secure, scalable, and user-friendly financial services platform used by businesses across Europe. The team is distributed and agile, with a strong emphasis on engineering best practices and code quality. Key Technologies: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL. RESPONSIBILITIES Design, develop, and implement large-scale software solutions using Node.js and React Ensure high quality and maintainability of code across all stages of development Collaborate closely with cross-functional teams to gain full context for complex tasks Adhere to engineering best practices, company policies, and client guidelines Provide mentorship, technical guidance, and coaching to less-experienced engineers Advocate for clean code principles, design patterns, and architectural best practices Design and maintain distributed and secure systems, ensuring scalability and performance Build and integrate APIs into the platform Work with AWS services and DevOps practices to ensure reliability and efficiency REQUIREMENTS Over 5 years of experience in Back-End software development At least 3 years of experience with TypeScript Over 4 years of experience working with Node.js Strong experience in designing distributed and secure systems Strong experience working with AWS Good Front-End development skills Good understanding of microservices architectures Experience in designing, building, and maintaining APIs Experience in building and consuming REST and/or GraphQL APIs Familiarity with DevOps practices Good knowledge of testing best practices At least an Upper-Intermediate level of English WILL BE A PLUS Experience with modern JavaScript and ES6 libraries PERSONAL PROFILE Proactive problem-solver with a strong sense of ownership Effective communicator and team collaborator Adaptable to changing priorities and requirements

🏢 Summary: Senior Node.js Engineer role focused on designing and developing a secure, scalable FinTech platform for European businesses. The position involves working in a distributed agile team using modern technologies to build and enhance financial services solutions. The offer emphasizes high-quality engineering practices, microservices architecture, and cloud-based infrastructure. 🗂️ Requirements: 5+ years Back-End development experience, 4+ years Node.js experience, 3+ years TypeScript experience, Experience designing distributed systems, Experience designing secure systems, Strong AWS experience, Front-End development skills, Understanding of microservices architecture, Experience designing and maintaining APIs, Experience with REST or GraphQL APIs, Familiarity with DevOps practices, Knowledge of testing best practices, Upper-Intermediate English level 📃 Skills: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL, JavaScript, ES6, DevOps, API, Testing 🏢 Description: Are you ready to take on a key role in developing cutting-edge financial solutions? We are looking for a Senior Node.js Engineer to join our distributed agile team and work on a highly secure, scalable FinTech platform used by businesses across Europe. We at Sigma Software value innovation, technical excellence, and collaboration. This position offers the opportunity to work with modern technologies such as Node.js, TypeScript, React, AWS, and microservices architecture. You’ll have the chance to work on impactful projects, enjoy flexible working arrangements, and grow your expertise alongside talented professionals. CUSTOMER Our Customer is one of Europe’s fastest-growing FinTech companies, providing a comprehensive payment platform that integrates financial services into its products. Their solutions include account management, virtual cards, bank transfers, and other advanced features. The company is known for its innovative approach to simplifying financial operations for businesses, ensuring security, scalability, and user-centric design. PROJECT The project focuses on building and enhancing a secure, scalable, and user-friendly financial services platform used by businesses across Europe. The team is distributed and agile, with a strong emphasis on engineering best practices and code quality. Key Technologies: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL. RESPONSIBILITIES Design, develop, and implement large-scale software solutions using Node.js and React Ensure high quality and maintainability of code across all stages of development Collaborate closely with cross-functional teams to gain full context for complex tasks Adhere to engineering best practices, company policies, and client guidelines Provide mentorship, technical guidance, and coaching to less-experienced engineers Advocate for clean code principles, design patterns, and architectural best practices Design and maintain distributed and secure systems, ensuring scalability and performance Build and integrate APIs into the platform Work with AWS services and DevOps practices to ensure reliability and efficiency REQUIREMENTS Over 5 years of experience in Back-End software development At least 3 years of experience with TypeScript Over 4 years of experience working with Node.js Strong experience in designing distributed and secure systems Strong experience working with AWS Good Front-End development skills Good understanding of microservices architectures Experience in designing, building, and maintaining APIs Experience in building and consuming REST and/or GraphQL APIs Familiarity with DevOps practices Good knowledge of testing best practices At least an Upper-Intermediate level of English WILL BE A PLUS Experience with modern JavaScript and ES6 libraries PERSONAL PROFILE Proactive problem-solver with a strong sense of ownership Effective communicator and team collaborator Adaptable to changing priorities and requirements

🏢 Summary: Senior-level Principal Engineer role focused on building and scaling full-stack web applications using the MERN stack within a cloud-native Azure environment. The position drives architecture, microservices, API-first and event-based integrations while leading complex technical initiatives in a Scrum team. The role combines deep technical expertise with hands-on leadership in DevOps, security, data, and modern web technologies. 🗂️ Requirements: Bachelor’s or Master’s degree in Computer Science, Engineering or related field, Around 10 years of experience in software engineering, Experience in senior technical leadership role (Senior/Principal/Team Lead), Strong experience with Azure Cloud and Azure services, Expertise in JavaScript and modern JS frameworks (React.js, Node.js, Remix.js), Experience with database technologies (MongoDB, PostgreSQL, MySQL), Experience with DevOps practices and infrastructure-as-code, Experience with containers and Kubernetes (AKS), Understanding of headless CMS architecture (Contentful), Experience with scripting in Python in cloud environments, Knowledge of DevSecOps security practices, Experience with Azure Data tools (Databricks, Synapse), Experience with code quality and security tools, Experience working in Agile/Scrum environments 📃 Skills: JavaScript, React, Node.js, Remix.js, MongoDB, PostgreSQL, MySQL, Azure, Databricks, Synapse, Python, Kubernetes, AKS, Terraform, GitHub, GitHubActions, SonarQube, Datadog, Contentful, PowerApps, SQL, Vue.js 🏢 Description: The Principal Engineer is experienced software engineer specialising in MERN tech stack to build scalable, high-performance web solutions. This individual will play a crucial role in the development process, accelerating delivery of full-stack web applications. The Principal Engineer will act as the highest skilled Individual Contributor and will cooperate closely with Media, Content and Commerce team supporting Marketing . The team operates within Scrum framework to deliver value to Consumer Healthcare business. The team supports variety of applications composed of different technologies like React.JS, Node.JS, Vue.JS, Python, Databricks, Kubernetes, PowerApps, Azure Synapse Analytics, database technologies like PostgreSQL, MongoDB, Microsoft SQL. 📍 Remote from Poland The Principal engineer will champion best practices in software engineering including micro-services architecture, API-First and event based integration, Cloud Native/SaaS hosting and Headless CMS. A Good candidate should have knowledge of: The Principal Engineer is the most senior Individual Contributor (IC) and excels through in depth technical knowledge of specific technical domains. Contributes to their team or domain meeting goals through successfully leading and consistently delivering on projects of highly ambiguous scope, high complexity and critical business impact. Can be deployed to highest priority business problems or fires, can quickly resolve them and help the business understand how to avoid them in future. Proactively contributes to the betterment of other engineers in the company, through sponsoring, mentoring and providing constructive, candid feedback. Proactively gives technical and strategic feedback on projects relevant to their expertise that leads to better outcomes. Directly impacts the trajectory of the company both through working on the most impactful problems and being able to bring about change with effective momentum. Links technical contribution back to business impact for their team or area and helps others to buy into this. Consistently leads their team to good outcomes from a technical perspective, ensuring appropriate engineering decisions are made to factor in technical debt, systems design, stability/reliability, monitoring/observability and business need. Is regularly recognized in their team and collective for highly impactful technical contributions of the highest quality. Proposes changes to technical scope to handle changing business priorities or urgency. Leads the refactoring of complex systems or problems when it is warranted. Can make pragmatic trade-offs between perfection and technical debt which aligns with our priorities as a business, including how to repay debt. Has the skills to competently work on complex and unknown problems under pressure (e.g. debugging complex production issues at speed, or leading the resolution of critical or major incidents) Can demonstrate their technical skills outside of code, and leads the design process for complex technical problems in their team or collective. Contributes to architecture forums, takes part in initiatives to improve the practices of the engineering discipline. Can clearly and confidently articulate risk of technical problems to non technical stakeholders (e.g legal, compliance) Communicates effectively when representing Engineering to external stakeholders (e.g auditors, regulators, third-parties, or industry groups) when appropriate Actively and regularly offers well considered contributions to the roadmap of their team or business area. Fosters effective collaboration between product, engineering and architecture. Demonstrates product-awareness. Offers valuable contributions to quarterly planning rituals, and works with the PM or team lead on setting the vision for a team. Ensures their team is focusing on work that will drive forward quarterly goals or business objectives, whilst reducing the operational impact for engineers and Ops. Repeatedly consulted for advice by engineers from different teams or collectives. Proactively stays up to date with technology trends in their area, and uses this knowledge to contribute thoughts on their team’s strategy. Works to enable groups of others to improve coding standards and awareness of best practices around non-functional requirements (e.g. performance, testability, scale, security) Tackles problems before they can do harm, knowing which levers to pull to make change happen. Key Roles & Responsibilities Leads the refactoring of complex systems or problems when it is warranted. Can make pragmatic trade-offs between perfection and technical debt which aligns with our priorities as a business, including how to repay debt. Has the skills to competently work on complex and unknown problems under pressure (e.g. debugging complex production issues at speed, or leading the resolution of critical or major incidents) Can demonstrate their technical skills outside of coding, and leads the design process for complex technical problems in their team or collective. Articulates risk of technical problems to non technical stakeholders (e.g legal, compliance) and  Communicates effectively when representing Engineering to external stakeholders (e.g auditors, regulators, third-parties, or industry groups) when appropriate Actively and regularly offers well considered contributions to the roadmap of their team or business area. Fosters effective collaboration between product, engineering and architecture. Qualifications and skills Strong experience with Azure Cloud and Azure services Technical expertise in one or more technology domains and programming languages (e.g. Java, Javascript) , database technologies (e.g. MongoDB, PostgreSQL, MySQL) and release & configuration management tools. Technical expertise in JavaScript frameworks (Remix.js. Node.js, React.js) Understanding of  headless CMS architecture, i.e. Contenful Experience with scripting languages (preferably Python) in cloud environments with a focus on IaaS, PaaS Comprehensive understanding of modern DevOps platform technologies (e.g. GitHub Actions) incl. infrastructure-as-code (e.g. Terraform) and containers (e.g. Kubernetes, AKS) Knowledge of Security Practices for DevSecOps Knowledge of Azure Data (DataBricks , Synapse Studio) , AI (Open AI , AI Search) tools Experience with code quality and code security tools (i.e.: SonarQube, Github Advanced Suite). Experience with observability tools e.g. Datadog Experience with Atlassian suite Extensive experience with agile methodologies Experience working in a cloud native environment (Azure desirable) Working knowledge of Scrum based Agile development Job Requirements and Qualifications: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical field – or equivalent practical experience. Around 10 years of experience in software engineering, with experience in leadership role (e.g. Senior/Principal Software Engineer, Team Lead). Proven experience with architecture and solution design in software engineering. Deep domain & Engineering management expertise and experience. Demonstrable tech leadership. Experience working with geographically distributed teams or vendor partners. Exposure in managing web hosting platforms/teams. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Remote Software Engineer role focused on building AI-powered data products and backend services for the logistics domain. The position involves integrating AI/ML models into production, developing AI-driven features such as chatbots and recommendation engines, and orchestrating AI pipelines. You will work with TypeScript/JavaScript, Node.js, and Python to deliver scalable, intelligent solutions. 🗂️ Requirements: 3–4 years of experience with TypeScript/JavaScript, Proven commercial experience with Node.js, Professional experience with Python, Hands-on experience integrating AI/ML models into production systems, Experience building backend services consuming AI outputs, Experience orchestrating AI pipelines, Experience designing chatbots or recommendation engines, Experience integrating LLMs into applications, Upper-Intermediate English level 📃 Skills: TypeScript, JavaScript, Node.js, Python, AI, ML, LLMs, React, Backend, APIs, Chatbots, Recommendation, Pipelines 🏢 Description: Are you passionate about building intelligent systems that transform industries? We are looking for a Software Engineer to join our team and work on cutting-edge AI-powered solutions in the logistics domain. This is a remote position, offering flexibility and the opportunity to collaborate with international teams. We at Sigma Software value innovation, quality, and teamwork, and provide our specialists with challenging projects and professional growth opportunities. Why join us? You will work on impactful AI-driven products, gain exposure to advanced technologies, and be part of a company that supports continuous learning and career development. Customer Our customer is one of Europe’s leading logistics providers, headquartered in Germany. They specialize in developing and implementing integrated supply chain systems, leveraging advanced data analytics to optimize logistics operations. Recognized for innovation and efficiency, they deliver solutions that enhance operational performance across diverse industries. Project The project focuses on developing advanced data products, including an AI assistant capable of performing analysis and providing insights based on user queries. The team is also building tools to support the client’s internal processes, integrating AI/ML models into production systems, and designing AI-powered features such as chatbots and recommendation engines. Requirements 3–4 years of development experience with TypeScript/JavaScript technology stack Proven experience with Node.js Experience with Python Hands-on experience integrating AI/ML models into production systems Experience building backend services that consume AI outputs and orchestrate AI pipelines Experience designing AI-powered features such as chatbots or recommendation engines Familiarity with integrating LLMs into applications Strong communication and multitasking skills Strong problem-solving and decision-making abilities with a focus on results Upper-Intermediate level of English WILL BE A PLUS: Experience with React Personal Profile Motivated, self-driven, and positive individual Strong communication skills Ability to multitask and manage priorities effectively Skilled in solving complex problems under tight deadlines Passionate about leveraging technology to deliver impactful results Responsibilities Design, develop, and maintain backend services using TypeScript/JavaScript and Node.js Integrate AI/ML models into production environments to support business processes Build and orchestrate AI pipelines that consume model outputs and deliver actionable insights Develop AI-powered features such as chatbots and recommendation engines Collaborate closely with cross-functional teams to ensure seamless integration of AI solutions into applications Participate in architectural discussions and contribute to solution design Ensure high-quality code through testing, reviews, and adherence to best practices Communicate effectively with stakeholders and team members to align on requirements and deliverables

🏢 Summary: Senior Full-stack Engineer role focused on building and scaling a modern B2B SaaS platform for subscription-based e-commerce. The position involves end-to-end feature delivery, architectural decisions, and improving system scalability and reliability. High-impact role with strong ownership over technical direction and product evolution. 🗂️ Requirements: 7+ years engineering experience in complex systems, Strong system design skills, Experience designing scalable architectures, Full-stack development experience, Experience building SaaS platforms, Experience with e-commerce systems 📃 Skills: JavaScript, TypeScript, SaaS, Architecture, Scalability, Reliability, APIs, Ecommerce, Payments, Cloud 🏢 Description: Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities Build and evolve a scalable SaaS platform Design and deliver new features end-to-end Improve performance, reliability, and system architecture Collaborate with product, design, and growth teams Requirements 7+ years of engineering experience in complex systems Strong architectural and system design skills Ability to choose appropriate technologies per problem Experience working in cross-functional teams Strong communication in Polish and English Startup mindset: ownership, speed, adaptability Experience with e-commerce platforms is a plus Offer High-impact role in a senior engineering team with real product ownership and influence. Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. Direct access to founders, investors, and advisors.