Lead Python Developer (Fintech)

EPAM Systems; Polska; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Health insurance

Multisport

Stock Purchase Plan

Relocation opportunities

Hybrid/Remote within Poland

Job summary

EPAM Systems Inc. is seeking a Lead Python Developer (Fintech) to design, build and optimize data processing workflows for large-scale trading datasets.

You will own Python-based pipelines, manage virtual environments, craft SQL queries and drive CI/CD through Git, testing, deployment and rollback processes. The role requires 7+ years in Python, strong Pandas/NumPy, and experience reconciling results from diverse sources.

Qualifications

• 7+ years as a Python Developer using Python, Pandas and NumPy.
• Experience crafting and refining SQL queries for large datasets.
• Hands-on with Git including branches, PRs, and code reviews.
• Experience with CI/CD, builds, tests, deployments, and rollbacks.
• Experience handling large, unstructured datasets such as loan-level tapes and model outputs.

Responsibilities

• Build data processing workflows leveraging Python and managing virtual environments.
• Craft and fine-tune SQL queries designed for trading databases.
• Collaborate through Git with branching, PR creation, and code review processes.
• Engage in CI/CD tasks including builds, testing, deployments, and rollbacks as needed.
• Examine large, intricate datasets and reconcile results across sources; document variances.

Skills

Python

Pandas

NumPy

Git

Linux CLI

SQL

Conda/Poetry

CI/CD

Data reconciliation

Tools

SQL Server/T-SQL

Conda/Poetry

Git

Linux

Job description

We're looking to add a Lead Python Developer (Fintech) to our team—someone with solid technical expertise in building applications and managing deployment pipelines, particularly for large-scale systems and trading databases.Please note that work hours extend to 8–9 PM.ResponsibilitiesBuild data processing workflows leveraging Python while managing virtual environmentsCraft and fine-tune SQL queries designed for trading databasesWork collaboratively through Git, covering branching, Pull Request creation, and code review processesEngage in CI/CD pipeline tasks, encompassing builds, testing, deployments, and rollbacks as necessaryExamine large and intricate datasets, including loan-level tapes and model outputsCross-check results originating from multiple sources and probe into any discrepancies foundDocument and clarify variances identified throughout data reconciliation workRequirementsA minimum of 7 years working as a Python DeveloperStrong command of Python, Pandas, and NumPyAdaptability in using conda, poetry, and uv for managing packages and virtual environmentsExpertise in crafting and refining SQL queriesExperience handling large, unstructured datasets such as loan-level tapes and model outputsAbility to reconcile two sets of results and articulate the reasoning behind differencesHands-on experience with Git, including branching, Pull Requests, and code review practicesEnglish proficiency at a B2+ level or higherNice to haveFamiliarity with SQL Server/T-SQLComfort working with Linux command line, SSH, and hybrid Windows/Linux file shares (SMB/NFS)Knowledge of how CI/CD pipelines operate, including builds, testing, deployment, and rollback proceduresFoundational understanding of fixed income concepts: price/yield relationships, duration and convexity, spread types (OAS, Z spread), the distinction between coupon and 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.