Sigma Software

Are you an experienced technical leader ready to shape the future of scalable AdTech platforms? We are seeking a Principal Engineer to drive architectural transformation and lead high-impact projects for a Sweden-based industry innovator.

This is a senior-level role with full remote flexibility across Europe. At Sigma Software, we partner with global leaders to deliver cutting-edge technology solutions that automate and optimize revenue-focused operations. You will work on strategic initiatives, collaborate with cross-functional teams, and influence technical direction in a fast-paced, evolving domain.

Why join us? You’ll have the opportunity to work on globally recognized platforms, contribute to architectural innovation, and enjoy a supportive culture with challenging projects.
 

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.

Job Description

• Act as a key technical liaison between business and engineering teams, translating commercial goals into actionable technical solutions
• Evaluate publisher technical environments and design scalable, maintainable architectures
• Prepare client-ready solution proposals, including features, integrations, and tools
• Lead cross-functional delivery teams, including developers, designers, DevOps, and technical PMs
• Provide architectural oversight throughout the development lifecycle to ensure continuity and quality
• Manage distributed teams across multiple time zones
• Mentor engineers, conduct code reviews, and guide technical growth
• Make architectural decisions at component and plugin levels, balancing trade-offs and communicating choices clearly

Qualifications

• At least 6+ years of hands-on experience in JavaScript / TypeScript, Vue.js, and Node.js
• Experience in microservices architecture and distributed systems integration
• Hands-on experience with AWS Lambda or similar serverless technologies
• Deep understanding of plugin-based systems and extensibility points
• Proven ability to customize and extend existing solutions without breaking core functionality
• Experience in AdTech environments with evolving requirements
• Knowledge of Vite, Cypress, and Vitest for modern development workflows and testing
• Experience with AWS S3 and CloudFront for scalable storage and content delivery
• Strong commercial acumen and ability to translate business goals into technical infrastructure
• Fluent English communication skills for enterprise stakeholder management

WILL BE A PLUS

• Experience with other serverless frameworks (e.g., Azure Functions, Google Cloud Functions)
• Familiarity with enterprise e-commerce platforms
• Knowledge of performance optimization and security best practices
• Prior work in media publishing technology solutions

PERSONAL PROFILE

• Proactive, solution-oriented mindset
• Strong problem-solving skills and ability to unblock dependencies
• Comfortable working in fast-paced environments with evolving requirements
• System-thinking approach — seeing beyond individual tasks to the bigger picture

Are you passionate about shaping the future of digital advertising?

We are looking for a Business Analyst to join our high-load AdTech project, supporting a global self-serve advertising platform used by thousands of advertisers worldwide. This role offers the flexibility of remote work with occasional team meetups.

We at Sigma Software partner with leading technology companies to deliver cutting-edge solutions. Here, you will work alongside international publishers, advertisers, and cross-functional teams to streamline workflows and enable scalable platform growth.

You will be part of an innovative environment with professional development opportunities, competitive benefits, and the chance to make a tangible impact on an industry-leading platform.

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.

Job Description

• Map, analyze, and redesign publisher workflows (onboarding, billing, campaign approval) using BPMN
• Create and manage the business rules document for core platform capabilities
• Design standardized workflows “Golden Path” to optimize the multi-tenant architecture
• Collaborate with the Head of Data & AI to identify automation opportunities
• Audit live automated processes to verify efficiency and ROI outcomes, tracking metrics such as cycle time, auto-approval rate, and rework percentage
• Facilitate requirements gathering sessions with internal and external stakeholders
• Translate complex business needs into actionable specifications for engineering teams
• Support testing and validation of new features against defined business rules

Qualifications

• At least 3 years of experience as a Business Analyst
• Deep understanding of AdTech and/or white-label SaaS operational workflows
• Proficiency in BPMN, UML, and Swimlane diagramming
• Advanced ability to interview stakeholders and extract complex business rules and requirements
• Familiarity with Agile/Scrum methodologies
• Experience defining and managing API contracts and data models (REST/GraphQL, JSON)
• Familiarity with A/B testing or experimentation frameworks
• Proficiency in analytics and BI tools (SQL, Looker, Tableau)
• At least an Upper-Intermediate level of English

WILL BE A PLUS

• Experience with cloud-native SaaS (AWS/Azure) and CI/CD tooling
• Background in process governance, release management, RACI matrices, and change control

PERSONAL PROFILE

• Proactive, analytical professional with strong attention to detail
• Performs effectively in dynamic, high-load environments
• Translates business needs into clear, actionable technical solutions

We are looking for a skilled Embedded Engineer to join our growing team and support customers in delivering IoT-driven solutions. As our Embedded department continues to expand, we are seeking professionals with strong analytical thinking and solid technical expertise.

In this role, you will collaborate with a team of experienced Embedded Engineers to design and implement high-quality solutions that address real-world challenges. This role suggests working with embedded systems, cloud connectivity, and modern communication technologies.

If you’re a motivated Embedded Developer ready to take the next step in your career, we would be excited to collaborate with you!

Requirements

• 4+ years of experience with C
• Experience with cloud connectivity applications, including monitoring and Firmware-Over-the-Air (FOTA) solutions
• Strong background in communication technologies such as LTE, BLE, OpenThread, MQTT, and cybersecurity
• Practical experience with Yocto Linux
• Experience in debugging and troubleshooting embedded systems, including software debugging on real devices (using J-Link, ST-Link) and resolving system-level issues
• Upper-Intermediate level of English

WOULD BE A PLUS:

• Hardware knowledge
• Experience with Docker, GitLab, and Jira

Responsibilities

• Design separate components, modules, classes, devices
• Code, debug, document, and maintain portions of software and hardware
• Perform different types of testing
• Participate in estimation and planning sessions
• Contribute to the development of technical project documentation and user documentation
• Provide assistance to test engineers and support personnel in solving technical issues of software installation and its operation
• Participate in conference calls and face-to-face meetings with the Customer and Customer partners
• Comply with the best engineering practices, technical standards, and quality criteria set forth on the project
• Report status and progress according to the project and company demands
• Spot current deficiencies in the development process, adopted procedures, and engineering practices, environment configurations, etc., and suggest improvements
• Escalate technical issues to the Architect, Team Lead, and Project Manager

We’re looking for a dynamic and enthusiastic Project Manager to join our Design & Web Solutions Business Unit. In our fast-paced environment, things move quickly, so you’ll need to stay ahead by adapting to new tools and technologies with ease. Being results-driven and able to manage multiple tasks simultaneously will be key to your success.

Our Project Managers are professionals at bringing ideas to life. They not only understand the underlying business goals behind requirements but also provide teams with valuable user insights, drive projects to completion, and ensure we deliver exceptional experiences that delight our customers.

Requirements:

• At least 3 years of project management experience in a dynamic environment
• Proficiency in Agile, Scrum, and Kanban methodologies and tools
• Strong organizational and multitasking skills
• Critical thinking and problem-solving abilities
• Experience managing stakeholders and aligning team capabilities with client needs
• Excellent verbal and written communication skills
• Ability to meet tight deadlines while maintaining quality
• Quick learner, adaptable to new tools and processes
• Proven track record of delivering projects aligned with business objectives
• Strong interpersonal skills and ability to lead cross-functional teams
• Upper-Intermediate or higher level of English

Will be a plus:

• Knowledge of design workflows and tools (Figma, Sketch, Adobe Creative Suite)
• Experience communicating effectively with design teams

Personal Profile:

• Results-driven and proactive
• Flexible and adaptable to change
• Strong leadership and team motivation skills
• Detail-oriented with a focus on quality
• Excellent collaboration and interpersonal skills

Responsibilities:
 

Project estimation and planning:

• Lead the estimation process, defining project scope, timelines, and resource requirements for creative, graphic design, and web development projects (WordPress, WebFlow, etc.)
• Develop detailed project plans and schedules, ensuring all phases are accounted for — from concept to delivery

Project activities control, time, and effort tracking:

• Monitor project progress, ensuring tasks are completed on time and within budget
• Track team effort, project hours, and deliverables to ensure efficient use of resources and adherence to timelines
• Provide regular project status updates to stakeholders and management

Team coordination:

• Coordinate with cross-functional teams, including designers, developers, and marketing specialists, ensuring smooth collaboration
• Ensure all team members are aligned with project goals, timelines, and deliverables

People management:

• Lead and motivate the project team, providing guidance and support to ensure high performance
• Foster a positive work environment where team members can collaborate, solve problems, and grow professionally

Team utilization:

• Ensure optimal utilization of team members by assigning tasks based on skills, availability, and project needs
• Balance workloads across the team to prevent burnout and maintain productivity

Project risk management:

• Identify potential project risks early on, assess their impact, and develop mitigation strategies to minimize risks
• Proactively address issues as they arise, ensuring projects stay on track

Successful execution and delivery of projects:

• Ensure projects are executed efficiently and delivered within the agreed scope, budget, and timelines
• Maintain a high standard of quality in all deliverables, ensuring they meet both client and internal expectations

Customer business needs identification and product solution selection:

• Work closely with clients to understand their business needs and goals
• Collaborate with internal teams to recommend optimal solutions that align with client objectives and add value to their business

Support in developing marketing strategies:

• Contribute to the creation of marketing strategies, especially concerning internal branding and Sigma Software’s identity.

We are seeking a highly skilled Node.js expert, who excels as a collaborative team member. The role goes beyond coding, encompassing responsibilities such as handling feature aspects, specifications, technical design, development, testing, documentation, and maintenance.
 

Customer

Our client has rapidly become one of Europe’s most swiftly expanding FinTech companies. They oversee all aspects of financial operations, from generating virtual cards to facilitating wire transfers and maintaining customer account balances. As a payment institution, our client provides a platform that integrates financial services into its product, offering features such as account management, card payments, bank transfers, and additional services.

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
• Experience with AI Agentic systems and MCP (Model Context Protocol) integrations
• Strong experience in designing distributed and secure systems
• 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
• Strong experience working with AWS
• Good knowledge of testing best practices
• At least an Upper-Intermediate level of English

Would be a plus

• Experience with modern JavaScript and ES6 libraries