Software Engineer, Full Stack

Posted Yesterday
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Warsaw, Warszawa, Mazowieckie, POL
In-Office
253K-343K Annually
Junior
AdTech • Artificial Intelligence • Big Data • Marketing Tech
The Role
Build and operate full-stack features spanning frontend interfaces, backend services, APIs, data pipelines, caching, authentication, and cloud infrastructure. Write analytical SQL over large datasets, manage GCP and AWS integrations, maintain Firebase, Auth0, and Firestore authorization, and ensure testing, observability, and reliability. Participate in architecture reviews, contribute to technical roadmaps, mentor junior engineers, and develop or integrate production LLM-powered workflows and AI agents.
Summary Generated by Built In
Samba’s Product Engineering team builds the software that puts our data to work — customer-facing platforms, internal tooling, and the APIs and services that connect them. Our engineers own meaningful systems end-to-end, ship production code every week, and work directly with product, data science, and go-to-market teams to deliver outcomes that matter.
As a Full Stack Engineer, you will own features and systems across the stack — from web frontends to backend services, data pipelines, and cloud infrastructure. The backend work here is not just CRUD: it spans analytical SQL over large-scale TV viewership datasets, Firestore-backed caching pipelines, a multi-cloud environment (GCP and AWS), and a non-trivial auth model. We care about engineers who think in systems, take ownership of correctness and reliability, and are comfortable doing the archaeology that real production codebases require.

What You'll Do:
  • Own features end-to-end — frontend interfaces, backend services and APIs, data models, and the infrastructure that runs them
  • Write and maintain analytical SQL over large-scale datasets (BigQuery); understand the domain well enough to extend measurement logic correctly
  • Design and operate data pipelines and caching layers that sit between raw data and the product surface
  • Maintain and evolve the auth and authorization model across Firebase, Auth0, and Firestore security rules
  • Manage multi-cloud integrations across GCP (BigQuery, Cloud Functions, Firestore, Cloud Storage) and AWS (S3)
  • Hold a high bar for testing, observability, and reliability — you instrument what you ship and own its behavior in production
  • Participate in architecture reviews, contribute to the technical roadmap, and mentor junior engineers

Who you are: 
  • 2+ years of experience building and operating production software
  • Strong command of TypeScript or JavaScript across frontend and backend
  • Experience building backend services and APIs — RESTful design, authentication patterns, token-based auth flows
  • Comfortable writing non-trivial SQL — window functions, aggregations, query optimization; BigQuery or similar analytical datastore experience a plus
  • Hands-on experience with cloud infrastructure: serverless or managed compute, object storage, secret management, scheduled jobs
  • Familiarity with eventual consistency and cache invalidation patterns in distributed systems
  • Proficient in agentic development — building or integrating LLM-powered workflows, tool-use patterns, or AI agents in production
  • Comfortable doing archaeology in production codebases — reading unfamiliar code, identifying live vs. legacy paths, and making safe changes



Compensation
The base pay range for this role is zł253,000 – zł343,000 per year.

Skills Required

  • 2+ years of experience building and operating production software
  • Strong command of TypeScript or JavaScript across frontend and backend
  • Experience building backend services and RESTful APIs
  • Experience with authentication patterns and token-based authentication flows
  • Ability to write non-trivial SQL, including window functions, aggregations, and query optimization
  • Experience with BigQuery or a similar analytical datastore
  • Hands-on experience with cloud infrastructure, including serverless or managed compute, object storage, secret management, and scheduled jobs
  • Familiarity with eventual consistency and cache invalidation patterns in distributed systems
  • Proficiency in agentic development, including building or integrating LLM-powered workflows, tool-use patterns, or AI agents in production
  • Ability to read unfamiliar production code, identify live and legacy paths, and make safe changes
Am I A Good Fit?
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The Company
430 Employees
Year Founded: 2008

What We Do

Samba is a media-intelligence company that combines consented first-party viewership data from streaming, linear TV, the web, and video games with AI to map content, audiences, and outcomes. Its platform gives advertisers, publishers, and media platforms insight into audience behavior and supports campaign planning, targeting, measurement, and optimization across channels. Samba’s data and analytics help clients understand audiences and make marketing decisions.

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