Senior Software Engineer - Backend (Scala)

Quick Facts

Senior Software Engineer role on the Engineering team with a focus on building, scaling, shipping, and monitoring a reliable platform.

Description

You will work on a high-scale platform processing tens of billions of requests and asynchronous events, and ingesting billions of social messages daily, with frequent production deployments. The role emphasizes collaboration across front-end, back-end, and site reliability engineering to deliver reliable, quality products.

Responsibilities

• Ensure we build, scale, ship, and monitor our platform reliably using technologies such as Scala, Python, MySQL, Clickhouse, Redis, Kafka, Qdrant, Solr.
• Partner with product managers, designers, and other engineers to define requirements and complete feature work.
• Improve processes, systems, and tools to deliver quality products; champion technical initiatives and direction.
• Uphold project quality and planning by meeting deadlines, breaking down work, and ensuring proper testing and monitoring.
• Mentor and support other engineers through knowledge sharing and feedback on PRs and technical designs.

Requirements

• 4 years experience developing and supporting software in a production environment
• 3 years experience programming in object oriented languages such as Scala or other JVM languages
• 3 years experience with functional programming paradigms and ecosystems (e.g., Scala Cats, ZIO)
• Professional English proficiency in verbal and written communication
• Based in or near Kraków, with occasional availability to work from the office

Preferred Qualifications

• 3 years experience developing and supporting scalable, distributed backend services
• 3 years experience working with SQL databases and relational databases
• Professional Polish proficiency in verbal and written communication

Benefits

• Stock Ownership (RSUs): eligibility for Restricted Stock Units (RSUs)
• Generous Paid Time Off: 26 paid days off annually, plus bank holidays and extra company-wide “Rest & Recharge” days
• Paid Parental Leave: 20 weeks for birthing parents and 16 weeks for non-birthing parents
• Lifestyle Spending Account (LSA): $600 USD annual fund for well-being
• Remote & Hybrid Work Support: one-time $550 USD home office setup stipend and monthly internet reimbursement
• Mental Health & Well-being: access to dedicated mental health resources and company-wide wellness programs
• International Travel: opportunities to travel to Chicago HQ for team meetups and collaboration
• Kraków Office Perks: daily 50 zł lunch stipend when working from the office