Senior Software Engineer - Python / PySpark

Senior Software Engineer – Python / PySpark (Contract)

Genesis10 is currently seeking a Senior Software Engineer - Python / PySpark for a contract position with a Global Financial Institution located in San Francisco, CA. This is a 12+ month contract opportunity.

We are seeking a Senior Software Engineer with deep backend expertise to join a Scrum-based delivery team modernizing a mission-critical financial system. This role is heavily backend-focused, with strong emphasis on Python and PySpark, while also contributing to frontend development using React and Angular as needed. This individual will serve as a technical SME, guiding a team that is actively upskilling from mainframe technologies into modern Python-based platforms, requiring strong mentorship, technical guidance, and exceptional communication skills.

Responsibilities

• Consult on complex initiatives with broad impact and large‑scale planning for Software Engineering
• Review and analyze complex multi‑faced, larger scale or longer‑term Software Engineering challenges
• Design, develop, and modernize backend services to replace legacy mainframe functionality on a distributed platform
• Build and maintain data ingestion, validation, and transformation pipelines using Python and PySpark
• Develop and support APIs using FastAPI and/or Flask
• Collaborate within a Scrum team, partnering closely with Product Owners, LOB stakeholders, and Operations
• Act as a Python SME, mentoring engineers transitioning from mainframe technologies
• Contribute to frontend development using React and Angular when required
• Ensure data accuracy and integrity for financial feeds flowing into general ledger systems
• Participate in technical design discussions, code reviews, and architecture decisions
• Communicate effectively through documentation, presentations, and stakeholder discussions
• Support CI/CD pipelines and cloud‑native deployments using containerized platforms

Requirements

• 7+ years of relevant professional software engineering experience, or equivalent demonstrated through work or consulting experience, training, military experience, or education
• Strong expertise in Python, with production experience using PySpark
• Backend experience with FastAPI and/or Flask
• Frontend experience with React and/or Angular
• Experience with SQL Server and/or Exadata
• Hands‑on experience with Kafka or other streaming platforms
• Experience working in Agile / Scrum delivery models
• Strong communication, presentation, and stakeholder engagement skills
• Ability to guide and mentor other engineers as a senior technical contributor

Desired Skills

• Experience in financial institutions or enterprise accounting environments is highly desirable
• Familiarity with financial data flows, general ledger concepts, and accounting terminology
• Agentic AI frameworks: LangGraph, LangChain, A2A
• Programming Languages: Java, Scala, SQL, HiveQL
• Big Data Technologies: Hadoop, Spark, HDFS, Hive, Cloudera, Hortonworks
• Cloud Platforms: AWS (Glue, Lambda, Redshift, S3, CloudWatch)
• ETL / ELT Tools: AWS Glue, PySpark, Databricks
• Data Integration & Migration: Hadoop ecosystems, Kafka, real‑time streaming, data lakes
• Data Modeling: dimensional models, structured and unstructured data processing
• CI/CD & Automation: GitHub Actions, Azure DevOps, Jenkins, Git, Autosys, Airflow
• Containerization & Orchestration: Kubernetes

Pay Range

$69.84 - $77.84 per hour

Only candidates available and ready to work directly as Genesis10 employees will be considered for this position.

Benefits

• Access to hundreds of clients, most who have been working with Genesis10 for 5‑20+ years.
• The opportunity to have a career‑home in Genesis10; many of our consultants have been working exclusively with Genesis10 for years.
• Access to an experienced, caring recruiting team (more than 7 years of experience, on average.)
• Behavioral Health Platform
• Medical, Dental, Vision
• Health Savings Account
• Voluntary Hospital Indemnity (Critical Illness & Accident)
• Voluntary Term Life Insurance
• 401K
• Sick Pay (for applicable states/municipalities)
• Commuter Benefits (Dallas, NYC, SF, and Illinois)

Genesis10 is an equal opportunity employer. Candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.