Principal Engineer (AdTech)

Sigma Software

17h • Remote

About The Position

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. 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.

Requirements

• 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

Nice To Haves

• 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

Responsibilities

• 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

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed