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Senior Backend Engineer — AdTech & Real-Time Systems
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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on programmatic advertising and systems where milliseconds affect ad buying. The role is for a backend engineer working on high-throughput, low-latency services processing bid streams in real time. Required domain expertise in AdTech / RTB and proficiency in one of: Node.js/TypeScript, Go, Rust, Java, Python. Responsibilities include building and optimizing bidding services, identifying bottlenecks, improving throughput and latency, and contributing to technical decisions. Offers challenges in real-time processing and scalability, private healthcare and Multisport, with remote work and flexible hours.

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Senior Backend Engineer — AdTech & Real-Time Systems

Company: ITEAMLY SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

from: 30 October 2026
to: 29 November 2026
23 500 - 33 500 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland

Requirements

Expected technologies

Node.js
TypeScript
Go
Rust
Java
Python

Our requirements

  • Senior-level backend engineering experience, including work on high-throughput, low-latency production systems.
  • Strong experience in RTB or AdTech, particularly in programmatic advertising, media delivery or advertising marketplaces.
  • Solid backend engineering experience with Node.js/TypeScript, Go, Rust, Java or Python, and the ability to adapt quickly to new technologies.
  • The ability to investigate performance issues and make sound engineering trade-offs.
  • Strong software engineering fundamentals and a practical approach to solving complex technical problems.

Optional

  • Knowledge of OpenRTB 2.5/2.6, IAB standards and advertising formats.
  • Experience with DSPs, SSPs, ad exchanges, header bidding or Prebid.
  • Familiarity with OpenRTB Native, VAST, bid shading, pacing or frequency capping.
  • Understanding of IAB TCF 2.2 and GDPR consent handling in advertising systems.

Your responsibilities

  • Build and improve backend services supporting real-time ad-buying and delivery decisions.
  • Identify performance bottlenecks and improve throughput, latency and reliability.
  • Develop bidding flows, advertising integrations and services processing bid-stream data.
  • Contribute to technical decisions across performance-critical backend components.
  • Apply your domain knowledge to engineering challenges in programmatic advertising.

About the project

We’re looking for a Senior Backend Engineer to develop a programmatic advertising platform where milliseconds directly affect ad-buying decisions. You’ll work on high-throughput, low-latency backend systems, applying your AdTech or RTB expertise to challenges in real-time advertising.

This is how we organize our work

This is how we work

you have influence on the technological solutions appliedyou focus on product development

Team members

backend developerarchitect

This is how we work on a project

  • performance tests
Company

What we offer

  • Work on a large-scale advertising platform where backend performance directly impacts product outcomes.
  • The opportunity to solve demanding challenges in real-time processing, scalability and ad delivery.
  • A role that values your AdTech or RTB expertise beyond a single programming language.
  • Multisport card.
  • Private healthcare.

Development opportunities we offer

  • development budget
  • external training
  • mentoring
  • technical knowledge exchange within the company
  • time for development of your ideas

Benefits

  • remote work opportunities
  • flexible working time

ITEAMLY SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

As Venture Building, we create profitable technology companies from scratch. We collaborate with partners who share similar aspirations and are open to leveraging the potential of their networks, cultivated over years. We regularly launch new projects founded on long-term, amicable relationships with our associates.
Senior Backend Engineer — AdTech & Real-Time Systems
23.5k–33.5k zł / mth. (B2B)
I apply to:
ITEAMLY SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Kraków, Lesser Poland

Need more information?

  • Make sure the body of the offer doesn’t already include what you’re looking for.
  • Ask a question if you need more information you’re interested in.
  • We’ll forward your question to the employer and aim to provide a response within 3 business days.

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