Senior Software Engineer (Data Platform)

StepStone Group; Warszawa; On-site; PLN 10,155,600 - 12,164,400; Full time

Benefits offered by this job

Premium medical and dental care

Tech and sport communities

Events and integration parties

Game room and chillout zone

Job summary

The Stepstone Group Polska sp. z o.o. is seeking a Senior Software Engineer (Data Platform) to design, build and own core Data Platform components. You will collaborate with Staff/Principal Engineers, Eng Managers and Product Managers, delivering scalable, production‑ready solutions.

You will spend time writing code, reviewing peers, and solving complex engineering challenges while growing the team’s capability and code quality. This hands‑on role emphasizes practical impact and governance.

Qualifications

• Proven experience as a Senior Engineer with data platform or platform engineering background.
• Ability to work with cross‑functional teams to drive quality and delivery.
• Hands‑on with cloud/infrastructure tech, particularly AWS and Terraform.
• Strong knowledge of data platforms, processing tech (Kafka, Airflow, Spark) and lakehouse architectures.

Responsibilities

• Design, build and own key Data Platform components with scalable, production‑ready solutions.
• Write clean, well‑tested, observable code and promote engineering standards.
• Ensure reliability and performance via reviews, testing and monitoring.
• Own end‑to‑end delivery and mentor less‑experienced engineers.
• Leverage AI-assisted tools and automation to boost productivity and quality.

Skills

Senior Engineer experience

Data Platform engineering

Cloud infra (AWS)

Terraform

Kafka / MSK

Apache Airflow

Spark / Data Lakes

DBT knowledge

Observability (Datadog)

Tools

Terraform

Kafka

Airflow

Datadog

DBT

Spark

Glue

Iceberg

Job description

Senior Software Engineer (Data Platform)

• Legal Entity: The Stepstone Group Polska sp. z o.o.
• Compensation: PLN 0 - PLN 1,000,000 - monthly

Who we are

At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for job seekers and companies around the world to find a perfect match, in a fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring.

At our Tech Hub, located near Wilanowska Metro, we are here as more than 300 ambitious specialists who work on the development of our IT products. We are proud to be part of The Stepstone Group, a global expert in job-tech platforms and e-recruiting.

Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the world’s leading job-tech platform.

Our job at a glance

Join our team and you’ll be a key technical contributor within our Data Platform team, designing, building and maintaining scalable, reliable and well-governed data platform capabilities that power analytics, AI and business‑critical products.

Working in the Data Platform department, you will collaborate closely with Staff and Principal Engineers, Engineering Managers and Product Managers. You will take ownership of significant platform components, drive technical quality within your squad and help grow the engineering capability of those around you.

This is a hands‑on role. You will spend most of your time writing code, designing systems, reviewing peers’ work and solving complex engineering challenges.

This is so important to us. By joining our team, you will be playing a vital role as together we reimagine the labour market to make it work for everybody.

Your responsibilities

• Design, build and own key Data Platform components, making sound architectural decisions and delivering scalable, production‑ready solutions.
• Write clean, well‑tested and observable code while driving engineering standards, best practices and reusable patterns across the team.
• Ensure high levels of quality, reliability and performance through code reviews, testing, monitoring and proactive management of technical debt.
• Own technical delivery end‑to‑end, collaborating with cross‑functional teams, contributing to planning and risk management, and supporting less experienced engineers through mentoring and knowledge sharing.
• Leverage and promote AI‑assisted development tools and engineering automation practices to improve productivity, code quality and team efficiency.

Your skills and qualifications

• Proven experience as a Senior Engineer (or equivalent) with a strong track record in data platform or platform engineering and delivering complex solutions end‑to‑end.
• Demonstrated ability to work effectively with cross‑functional teams, including Product, Analytics and Infrastructure, while driving engineering quality, reliability and delivery excellence.
• Hands‑on experience with cloud and infrastructure technologies, particularly AWS and Terraform.
• Strong expertise in modern data platforms and processing technologies, including Kafka/Amazon MSK, Apache Airflow, AWS Glue, Apache Spark, Data Lakes, Lakehouse architectures and Apache Iceberg.
• Knowledge of data quality, governance, cataloguing, observability (e.g. Datadog), batch and streaming processing, with DBT considered a plus.

Benefits

• Premium medical and dental care
• Tech and sport communities
• Events and integration parties
• Game room and chillout zone

Our commitment

Equal opportunities are important to us. We believe that diversity and inclusion at The Stepstone Group are critical to our success as a global company, so we want to recruit, develop, and keep the best talent. We encourage applications from everyone, regardless of background, gender identity, sexual orientation, disability status, ethnicity, belief, age, family or parental status, and any other characteristic.