Senior Software Engineer I

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, Snowflake, 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. We’re not just building restaurant tech—we’re giving independent restaurants the tools to compete and win. From our award-winning point-of-sale to AI-powered profit tools, everything we do helps operators boost profit, work smarter, and keep their best people. And every solution is backed by real humans who actually give a sh*t about helping restaurants succeed. Named the #1 Restaurant POS by G2 (Fall 2025), based on ratings from real users Rated the top-rated point-of-sale (POS) for restaurants, bars, retail, and small businesses by Capterra users Awarded Great Places to Work and Built In’s Best Workplaces for multiple years running We move fast, care hard, and fight for independent restaurant operators to do what they love, and love doing it. If you’re looking to make an impact with heart and hustle, SpotOn is the place for you. 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. 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. ,[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.] Requirements: Python, Golang, TypeScript, JavaScript, AWS Additionally: Training budget, Private healthcare, MacBook, English lessons, Support for relocation, Employee referral bonus, Flexible working hours, Small teams, Lunch card, Free snacks, Free parking, Modern office, Kitchen, Free coffee, Bike parking, Playroom, Shower, Free beverages, No dress code.