Full-Stack Team Lead in AdTech

Level

Senior

Department

Development

Type

Full Time

Project

NDA

Locations:

Kyiv

Ukraine

Warsaw

Poland

Romania

Bucharest

Job Details

Posted on:

June 10, 2026

Job ID:

About the Company

Established in 2004, ALLSTARSIT was founded with a clear vision: to enhance the landscape of global IT employment by bridging the gap between companies and skilled professionals. The core belief was that assembling a team shouldn't be hindered by geographical constraints. Fast forward to the present day, ALLSTARSIT stands as an international outstaffing service provider committed to change the way businesses recruit, compensate, and oversee top talent worldwide.

With operational hubs scattered across Europe, Asia, and LATAM, and its headquarters situated in San Francisco, US, the company boasts a workforce of over 1,000 adept professionals. Spanning across more than 20 countries, ALLSTARSIT offers a diverse range of skilled employees across various verticals, including AI, cybersecurity, healthcare, fintech, telecom, media, and so on.

About the Project

The platform is a unified advertising technology stack that connects advertisers, publishers and data partners across digital and connected TV environments. It enables buyers to plan, activate and measure full-funnel campaigns, while helping publishers maximize inventory and data monetization.

The platform combines a demand-side platform, supply-side platform and proprietary data capabilities, including ACR data and AI-driven optimization, to deliver measurable outcomes across screens for both brand and performance advertisers.

Specialization

Headquarters

Years on the market

Team size and structure

Current technology stack

Required skills:

5+ years of experience developing enterprise web applications and distributed systems in production
2+ years of experience leading engineering teams (team lead, tech lead, or equivalent), including mentoring engineers and driving technical execution
Strong experience with Java (Spring Boot)
Experience with Node.js (TypeScript, NestJS) - advantage
Proven experience designing and implementing scalable web system architectures
Solid understanding of REST APIs, async processing, and clean architecture principles
Experience monitoring, debugging and supporting production systems
Experience with modern UI frameworks (specifically, Angular 2+)
Experience with relational databases - must, non-relational - advantage (MySQL, Vertica, Redis, Elasticsearch, MongoDB)
Excellent communication and interpersonal skills, with the ability to influence across teams and stakeholders
Strong ownership mindset, able to balance hands-on work with leadership responsibilities

Scope of work:

You will lead and mentor a team of full-stack engineers, owning our end-to-end development process from design to production, driving platform infrastructure and architectural decisions, and establishing best practices in system design, code quality, and AI-assisted development.
You will guide the team in designing and implementing scalable backend services in Java (Spring Boot) and NestJS (Node.js/TypeScript), build RESTful and event-driven APIs, and deliver reliable systems supporting publishers management, bidding logic, reporting, and customer-facing dashboards.
You will oversee the development of modern frontend applications using Angular (15+), ensuring seamless integration with backend services and consistent UX performance.
You will lead research of core technologies, integrations with external APIs and third-party services, and provide effective solutions to production and scalability challenges.
You will set the bar for high-quality, testable code (unit, integration, E2E), drive improvements in observability (logs, metrics, tracing), lead design reviews and technical discussions, and conduct code reviews to grow the team's technical capabilities.
You will partner with Product, DevOps and other stakeholders to translate business requirements into technical roadmaps, plan sprints, and ensure timely delivery of high-impact features.
You will own team-level processes including 1:1s, feedback, hiring, and onboarding of new engineers.
50% hands-on tasks.