Senior Scala Developer

Senior Scala DeveloperMiejsce pracy: WarszawaTechnologies we useExpectedScalaOptionalPrometheusGrafanaELK stackAbout the projectSalary: 1100 - 1300 PLN/day on B2BWork model: hybrid from Gdynia / Gdańsk / Warszawa (2/3 days per week from the office)The project focuses on building and optimizing large-scale data processing pipelines in a complex financial services environment, leveraging Scala, Apache Spark, and modern orchestration tools such as Airflow and Oozie. The engineer will design, develop, and maintain high-performance distributed data workflows, ensuring data quality, scalability, and reliability across multi-terabyte datasets. The role also involves close collaboration with analysts and data scientists to support advanced analytics, regulatory reporting, and AML/KYC use cases.Your responsibilitiesDesign, build, and optimize large-scale distributed data processing pipelines using Scala and Apache SparkDevelop and maintain ETL/ELT workflows orchestrated in Airflow and OozieEnsure performance, scalability, and reliability of Spark jobs, including tuning, partitioning, and memory optimizationImplement high-quality, testable code with strong unit and integration test coverageCollaborate with data scientists, analysts, and engineering teams to support analytics, AML/KYC, and regulatory reporting use casesMonitor data quality, perform profiling, and manage schema consistency across datasetsParticipate in CI/CD workflows, code reviews, and best-practice engineering processesSupport migration efforts, legacy workflow modernization, and improvements in data governance and securityOur requirements5–8+ years of software development experience (Scala)3+ years of hands-on experience with big data technologiesProven experience working with large-scale data processing (multi-terabyte datasets)Background in financial services or RegTech (preferred)Experience working in Agile environments (Scrum, SAFe, or similar)OptionalExperience with the Quantexa platformExperience migrating workflows from Oozie to AirflowKnowledge of data governance and security best practicesFamiliarity with monitoring tools such as Prometheus, Grafana, and the ELK stackUnderstanding of graph analytics and entity resolution techniquesExposure to regulatory reporting and compliance systemsDevelopment opportunities we offerassistance in preparation to public speechesconferences abroadconferences in Polanddevelopment budgetexternal trainingintracompany trainingmentoringsoft skills trainingsubstantive support from technological leaderssupport of IT eventstechnical knowledge exchange within the companyWhat we offerYou can expect a flexible work organizationThe international work environment will give you the opportunity to interact with the English language on a daily basisScandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)The Jit community will bring you a nice time during regular integration meetingsBenefitssharing the costs of sports activitiesprivate medical caresharing the costs of professional training & courseslife insuranceintegration eventscorporate sports teamcorporate librarychristmas giftsbirthday celebrationemployee referral programopportunity to obtain permits and licensesJit Team Summer OfficeJit CommunitiesEnglish lessonsRecruitment stagesHR InterviewTechnical TalkMeeting with the ClientThe OfferClient – why choose this particular client from the Jit portfolio?Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.Jit Team sp. z o.o.The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme.Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.