Principal Engineer – AdTech

Sigma Software Group

Principal Engineer driving architectural transformation in AdTech at a Swedish company. Leading high-impact projects with remote flexibility across Europe.

Posted 6/9/2026full-timeRemote • 🇷🇴 RomaniaLeadWebsite

Tech Stack

Tools & technologies

AWSAzureCloudCypressDistributed SystemsJavaScriptMicroservicesNode.jsTypeScriptVue.js

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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
Fluent English communication skills for enterprise stakeholder management
Experience with other serverless frameworks (e.g., Azure Functions, Google Cloud Functions) will be a plus
Familiarity with enterprise e-commerce platforms will be a plus
Knowledge of performance optimization and security best practices will be a plus

Benefits

Comp & perks

Remote work flexibility across Europe

ATS Keywords

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Hard Skills & Tools

JavaScriptTypeScriptVue.jsNode.jsmicroservices architecturedistributed systems integrationAWS LambdaViteCypressVitest

Soft Skills

communicationmentoringleadershipcollaborationarchitectural oversightproblem-solvingstakeholder managementteam managementcode reviewtechnical guidance