Data Engineer - Data Platform

Allegro; Poznań; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Flexible hours

Occasional remote work

MacBook Pro / Dell workstation

Cafeteria plan benefits

English classes

Training budget

Volunteer day

Social events

Job summary

Allegro is seeking a skilled Data Engineer to join the Vento team in Poznań. You will design and manage data validation pipelines for clickstream data, ensure data quality, and collaborate with cross-functional teams across data & backend domains.

You will contribute to data quality, event validation, and AI-assisted tooling, while working in a hybrid environment with flexible hours and frequent collaboration. Polish (C1) and English (B2) are required.

Qualifications

• Proven production experience in Big Data ecosystems and building stable data pipelines.
• Proficient in Python and Spark; familiarity with Java backend applications is a plus.
• Strong understanding of data quality, event contract validation, anomaly detection, and streaming data processing.

Responsibilities

• Design, scale, and maintain data validation pipelines for high-volume clickstream data in the Vento service.
• Implement anomaly detection to ensure data quality before core data assets intake.
• Collaborate with cross-functional stakeholders to reconcile data requirements and participate in code reviews.

Skills

Big Data

Python

Spark

Java

Data quality

Event contracts

Anomaly detection

Streaming

Code reviews

Autonomy

AI coding tools

Polish language

English language

Tools

Kubernetes

Docker

Consul

GitHub

GitHub Actions

Job description

• Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work.
• The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost):
• Annual bonus based on your annual performance and company results.

We are looking for a skilled and proactive Data Engineer to join our Vento team.

The role is critical for the development of the Vento service, which standardizes and validates all Allegro clickstream events. The Data Engineer ensures the high quality of data consumed by AI agents and core business dashboards (Board-level metrics).

This is the right job for you if you:

• Have solid, production-proven experience in Big Data ecosystems and building stable data pipelines.
• Are proficient in Python, Spark (Scala is nice to have) and open to navigating or aligning with Java backend applications.
• Understand data quality principles, event contract validation, anomaly detection, and data processing within streaming environments (Clickstream).
• Are open to feedback, keen to participate in code reviews, and eager to develop your skills.
• Are a proactive communicator who naturally signals technical problems and takes ownership of your tasks with a high level of autonomy.
• Show a broad technical perspective and are interested in how Big Data, Backend, and Frontend pillars interconnect.
• Are enthusiastic about utilizing AI coding tools to automate repetitive tasks and optimize your daily workflow.
• Speak Polish at a minimum C1 level and English at a minimum B2 level.

In your daily work you will handle the following tasks:

• Designing, scaling, developing, and maintaining data validation pipelines for high-volume clickstream data within the Vento service.
• Implementing robust anomaly detection mechanisms to ensure data integrity and quality processing before ingestion into the core Data Assets layer.
• Collaborating with cross-functional stakeholders to reconcile data requirements.
• Actively participating in engineering discussions, code reviews, and cross-team initiatives.

What's in it for you:

• Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work.
• Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms).
• A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories.
• A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers).
• English classes that we pay for related to the specific nature of your job.
• A training budget, inter-team tourism (see more here), hackathons, and an internal learning platform where you will find multiple trainings.
• An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal.
• Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy.

#goodtobehere means that:

• You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA.
• You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create.
• You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job.
• You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support).
• You will create solutions that will be used (and loved!) by your friends, family and millions of our customers.
• You will meet the Allegro Scale, which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning.
• You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about!