Senior Python Developer (Fintech)

EPAM Systems; Polska; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Health insurance

Employee stock purchase plan

Hybrid/remote work within Poland

Relocation opportunities

English classes

Job summary

EPAM Systems Inc is seeking a Senior Python Developer (Fintech) to join our team in Poland. You will develop data pipelines, optimize trading-related SQL, and participate in CI/CD processes while handling large, complex datasets.

The role requires 5+ years of Python experience, strong Pandas/NumPy skills, and proficiency with Git and English at B2+ level. A hybrid work model and opportunities for remote work within Poland are offered.

Qualifications

• 5+ years of Python development experience.
• Experience with large, messy datasets such as loan-level tapes and model outputs.
• Experience with Git, PRs, and code reviews; familiarity with CI/CD.
• Proficient English (B2+).

Responsibilities

• Develop data processing workflows using Python and manage virtual environments.
• Write and optimize SQL queries for trading databases.
• Collaborate via Git, including branching, PRs, and code reviews.
• Participate in CI/CD pipeline operations: build, test, deploy, and rollback.
• Analyze large, complex datasets and reconcile results across sources.

Skills

Python

Pandas

NumPy

SQL

Tools

Conda

Poetry

Git

UV

Job description

We are hiring a Senior Python Developer (Fintech) to join us, with a strong technical background in application development and deployment pipelines, focusing on large-scale systems and trading databases.Working hours run until 8–9 PM.ResponsibilitiesDevelop data processing workflows using Python and manage virtual environmentsWrite and optimize SQL queries for trading databasesCollaborate via Git, including branching, creating Pull Requests, and conducting code reviewsParticipate in CI/CD pipeline operations, including building, testing, deploying, and rolling back changes when neededAnalyze large, complex datasets such as loan-level tapes and model outputsReconcile results from different sources and investigate underlying discrepanciesExplain and document differences found during data reconciliation processesRequirements5+ years of experience as a Python DeveloperProficiency in Python, Pandas, and NumPyFlexibility to use conda, poetry, and uv for packaging and virtual environment managementSkills in writing and optimizing SQL queriesBackground in analyzing large, messy datasets such as loan-level tapes and model outputsCapability to reconcile two results and explain the differenceExperience with Git, including branching, Pull Requests, and code reviewsProficiency in English at a B2+ levelNice to haveKnowledge of SQL Server/T-SQLFamiliarity with Linux command line, SSH, and mixed Windows/Linux file shares (SMB/NFS)Understanding of CI/CD pipeline functions, including building, testing, deploying, and rolling back changesBackground in fixed income basics: price/yield, duration and convexity, spreads (OAS, Z spread), coupon vs yield, and accrued interestWe offerWe gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusivelyEPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.