Sigma Software

AdTech

PrincipalEngineer(AdTech)

€200–320k ~AI est. Bucharest, Bucharest, Romania FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for executive candidates.

The Brief

“Principal Engineer (AdTech) at Sigma Software. Skills: AdTech platforms, API-driven architecture, TypeScript, Vue.js. Drive architectural transformation. Lead high-impact projects”

Industry & Context.

AdTech
Problems you'll solve

Problem-solving skills; Unblock dependencies

What They're Looking For.

Must Have

6+ years of experience in JavaScript / TypeScript, 6+ years of experience in Vue. js, 6+ years of experience in Node. js, Experience in microservices architecture, Experience in distributed systems integration, Hands-on experience with AWS Lambda, Deep understanding of plugin-based systems, Proven ability to customize and extend existing solutions, Experience in AdTech environments, Knowledge of Vite, Knowledge of Cypress, Knowledge of Vitest, Experience with AWS S3, Experience with CloudFront, Commercial acumen, Fluent English communication skills

Nice to Have

Experience with other serverless frameworks, Familiarity with enterprise e-commerce platforms, Knowledge of performance optimization, Knowledge of security best practices, Prior work in media publishing technology solutions

What You'll Do.

Drive architectural transformation

Lead high-impact projects

Act as technical liaison

Translate commercial goals

Evaluate publisher technical environments

Design scalable architectures

Design maintainable architectures

Prepare client-ready proposals

Lead cross-functional delivery teams

Provide architectural oversight

Manage distributed teams

Guide technical growth

Make architectural decisions

Communicate choices clearly

How You'll Work.

Team & Collaboration

Cross-functional teams; Distributed teams; Multiple time zones

Communication Scope

Enterprise stakeholder management

Process & Methodology

Technical direction

Full Job Description

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. * 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-functi

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