Senior Software Engineer I (Data and Reporting)

As a Senior Software Engineer on our Data and Reporting team, you'll be responsible for designing, building, and maintaining high-performance, scalable data systems and data infrastructure. You will collaborate closely with cross-functional teams, including product management, engineering leadership, to enhance existing platforms and develop innovative solutions for complex data-driven applications.

On a daily basis you will:

• Architect, develop, and maintain scalable software solutions for our reporting and analytics platforms.
• Design and implement data pipelines, ETL processes, and integrations using ClickHouse, Streamkap, PostgreSQL, Snowflake, MongoDB, Kafka, and AWS.
• Write and Optimize SQL queries that drive merchant reporting outcomes and improve database performance across large-scale, distributed systems.
• Contribute to defining and refining system architectures, including cloud infrastructure and containerization strategies.
• Implement robust data observability monitoring, logging, and alerting solutions using tools like Grafana, Metaplane, and OpenTelemetry.
• Mentor junior and mid-level engineers, promoting technical excellence and best practices.

What skill are we looking for?

• 5+ years of professional software and data engineering experience.
• Proficient in Python; experience with GO and TypeScript or JavaScript is highly beneficial.
• For candidates located within approximately 50 km of the Kraków or Gdańsk offices, we offer hybrid model (2–3 times per week). For candidates based in other cities in Poland we offer opportunity to work remotely. 
• Extensive experience with databases and data warehouses such as ClickHouse, PostgreSQL, and MongoDB.
• Strong understanding of real-time data streaming and messaging systems, especially Kafka.
• Experience designing and implementing robust ETL pipelines and handling large-scale data migrations.
• Familiarity with cloud services, especially AWS, including IAM roles, S3, RDS, and MSK.
• Proven ability in performance tuning and optimization for high-volume, low-latency data systems.
• Experience applying core data observability principals to create a transparent and resilient data platform.
• Comfortable with containerization technologies such as Docker and orchestration tools like Kubernetes.
• Strong experience with infrastructure as code (IaC) tools and best practices.
• Deep understanding of software development best practices, CI/CD pipelines, and DevOps methodologies.

  Perfect candidate also has:

• Experience in building frontend components or familiarity with React and Next.js.
• Knowledge of monitoring and observability tools, including Grafana and OpenTelemetry.
• Background or interest in data analytics, machine learning applications, and causal analysis.
• Experience in the restaurant or hospitality technology sector.

Here’s a bit about what we have to offer:

• Competitive pay: 19 500 - 24 400 PLN net on B2B; 16 500 - 20 000  PLN gross on CoE.
• Training budget 3500 PLN gross per year.
• Access to e-learning platforms (O’Reilly).
• Fully paid private healthcare in LuxMed.
• Access to the Worksmile platform with a monthly top-up.
• Company free breakfasts/lunches in the office once a week.
• Group English classes with a native speaker.
• New Macbook Pro, 4K monitors or whatever tools you need.
• Flexible working hours.
• New, modern, bright and comfortable office space in the city centre.
• A lot of free parking spots around the office.
• Access to the company’s library.
• Great working atmosphere.
• Chill out room with a PlayStation and games.
• Free snacks and beverages in a kitchen.
• Company parties and social activities.
• Employee referral program.
• Relocation Package within Poland.

The controller of your personal data included in your job offer and others collected during the recruitment process is SpotOn Poland spółka z ograniczoną odpowiedzialnością with its registered office in Kraków, Aleja 29 listopada 20, 31-401 Kraków, e-mail address:
[email protected]. We will process your personal data for the purpose of current or, if you voluntarily agree, also future recruitment processes. More information about how we proccess your data, including the basis for processing and your rights in relation to the processing, can be found on our website: https://pl.spoton.com/privacy-and-cookies-policy.

Administratorem podanych danych osobowych, w tym danych zawartych w dokumentach aplikacyjnych i zebranych w toku procesu rekrutacji, jest SpotOn Poland Sp. z o.o. z siedzibą w Krakowie (ul. Aleja 29 listopada 20, 31-401 Kraków; adres e-mail do kontaktu:
[email protected]. Dane osobowe będą przetwarzane w celu realizacji obecnych lub – jeżeli wyrazisz na to dobrowolną zgodę – także przyszłych procesów rekrutacji. Więcej informacji o tym, jak przetwarzamy Twoje dane, w tym także informacje o podstawach prawnych przetwarzania oraz o prawach przysługujących Ci w związku z przetwarzaniem danych, znajdziesz na stronie:
https://pl.spoton.com/privacy-and-cookies-policy.