Senior Python Developer (ETL & Integration)

About the job

The Wissen team continues to expand its footprint in the USA, Canada, UK, Australia, and India. More openings to come as we continue to grow the team!

Please read below for a brilliant career opportunity.

Role: Senior Python Developer (ETL & Integration)

Title: AVP/VP

Location: New York , NY(Day 1 Onsite/Hybrid) – Fulltime

Mode of Work: 3 days/week onsite required

Work type - Fulltime & C2H(6 Months)

Required Experience: 7+ years

Role Overview

Wissen is hiring a Senior Python Developer to join a client engagement with a financial-services firm. You will be a Wissen employee working embedded in the client's engineering team, building and running the data pipelines and system integrations that move critical business data between platforms.

The work suits an engineer who has owned production ETL end to end and is comfortable working to the standards of a regulated environment.

• Design, build and maintain ETL/ELT pipelines in Python that ingest, transform and load data from databases, files, APIs and message queues.
• Build integrations between internal and third-party systems using REST/SOAP APIs, SFTP, and event streams (e.g., Kafka, MQ).
• Orchestrate and schedule workflows with tools such as Airflow, Prefect, Control-M or Autosys.
• Write performant SQL and optimize data models and queries across relational and analytical stores.
• Build data quality, reconciliation and validation checks so that downstream reports and systems can trust the data.
• Add logging, monitoring and alerting; own production support, root-cause analysis and incident fixes for your pipelines.
• Apply security and compliance controls: access management, encryption, masking of sensitive data, audit trails.
• Write unit and integration tests and ship through CI/CD pipelines with code review.
• Translate business and data requirements from client stakeholders into technical designs and estimates.
• Mentor junior engineers and contribute to coding standards and reusable frameworks.

What you need

• 7+ years of professional software development, with 4+ years of hands-on Python in production.
• Strong Python fundamentals: OOP, packaging, typing, async/concurrency, and libraries such as pandas, PySpark or Polars, SQL Alchemy and requests.
• Proven delivery of ETL/ELT pipelines handling large volumes (millions of records per day or more).
• Advanced SQL on at least one major RDBMS (Oracle, SQL Server, PostgreSQL, Sybase) and an understanding of data modelling.
• Experience building and consuming APIs (REST, JSON/XML) and working with file formats such as CSV, Parquet, Avro and fixed-width.
• Hands-on use of a workflow orchestrator (Airflow or similar) and job scheduling.
• Experience with Linux, shell scripting, Git and CI/CD tools (Jenkins, GitLab CI, GitHub Actions).
• Practical testing discipline (pytest) and production support experience.
• Bachelor's degree in Computer Science, Engineering or a related field, or equivalent experience.

Nice to have

• Cloud data platforms: AWS (Glue, Lambda, S3, Redshift), Azure (Data Factory, Synapse) or GCP, and Snowflake or Databricks.
• Streaming and messaging: Kafka, RabbitMQ, IBM MQ, or Spark Structured Streaming.
• Docker and Kubernetes; infrastructure as code (Terraform).
• Enterprise integration or ETL tools such as Informatica, Talend, MuleSoft or dbt.
• Experience with data governance, lineage and controls in a regulated environment.

How you work

• Clear communicator who can explain technical trade-offs to business and client stakeholders.
• Takes ownership of delivery and production stability, not only code.
• Comfortable working in a client environment and following its security, change-management and confidentiality policies.
• Works well in Agile teams and across time zones.

Benefits:

• Healthcare insurance for you and your family (medical, dental, vision).
• Short / Long term disability insurance.
• 401k
• Life Insurance.
• Accidental death & disability Insurance.
• 3 weeks of Paid Time Off.
• Support and fee coverage for immigration needs.
• Remote office set up stipend.
• Support for industry certifications.
• Additional cash incentives.
• Re-skilling opportunities to transition between technologies.

Schedule: Monday to Friday

Work Mode: Hybrid

Job Type: Full-time

We are: A high end technical consulting firm built and run by highly qualified technologists. Our workforce consists of 5000+ highly skilled professionals, with leadership from Wharton, MIT, IITs, IIMs, and NITs and decades of experience at Goldman Sachs, Morgan Stanley, MSCI, Deutsche Bank, Credit Suisse, Verizon, British Telecom, ISRO etc. Without any external funding or investments, Wissen Technology has grown its revenues by 100% every other year since it started as a subsidiary of Wissen Group in 2015. We have a global presence with offices in the US, India, UK, Australia, Mexico, and Canada.

You are: A true tech or domain ninja. Or both. Comfortable working in a quickly growing profitable startup, have a “can do” attitude and are willing to take on any task thrown your way.

You will:

• Develop and promote the company’s culture of engineering excellence.
• Define, develop and deliver solutions at a top tier investment bank or another esteemed client.
• Perform other duties as needed

Your Education and Experience:

• We value candidates who can execute on our vision and help us build an industry-leading organization.
• Graduate-level degree in computer science, engineering, or related technical field
• Wissen embraces diversity and is an equal opportunity employer. We are committed to building a team that represents a variety of backgrounds, skills, and abilities. We believe that the more inclusive our team is, the better our work will be. All qualified applicants, including but not limited to LGBTQ+, Minorities, Females, the Disabled, and Veterans, are encouraged to apply.

About Wissen Technology:

The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for diverse industries, including Banking, E-commerce, Telecom, Healthcare, Manufacturing, and Energy. We help clients build world-class products. We have offices in the US, India (Bangalore, Hyderabad, Chennai, Gurugram, Mumbai, Pune), UK, Australia, Mexico, Vietnam, and Canada.

We empower businesses with a dynamic portfolio of services and accelerators tailored to today’s digital demands and based on future ready technology stack. Our services include Industry Leading Custom Software Development, AI-Driven Software Engineering, Generative AI & Machine Learning, Real-Time Data Analytics & Insights, Interactive Data Visualization & Decision Intelligence, Intelligent Process Automation, Multi-Cloud & Hybrid Cloud Strategies, Cross-Platform Mobile Experiences, CI/CD-Powered Agile DevOps, Automated Quality Engineering, and cutting-edge integrations.

Certified as a Great Place to Work® for five consecutive years (2020-2025) and recognized as a Top 20 AI/ML vendor by CIO Insider, Wissen Group has delivered multimillion-dollar projects for over 20 Fortune 500 companies. Wissen Technology delivers exceptional value on mission-critical projects through thought leadership, ownership, and reliable, high-quality, on-time delivery.

Our industry-leading technical expertise stem from the talented professionals we attract. Committed to fostering their growth and providing top-tier career opportunities, Wissen ensures an outstanding experience and value for our clients and employees.

We Value:

• Perfection: Pursuit of excellence through continuous improvement.
• Curiosity: Fostering continuous learning and exploration.
• Respect: Valuing diversity and mutual respect.
• Integrity: Commitment to ethical conduct and transparency.
• Transparency: Open communication and trust.

Website : www.wissen.com

Glassdoor Reviews: https://www.glassdoor.com/Reviews/Wissen-Reviews-E2587444.htm

Wissen Thought leadership : https://www.wissen.com/articles/

Latest in Wissen in CIO Insider:

https://www.cioinsiderindia.com/vendor/wissen-technology-setting-new-benchmarks-in-technology-consulting-cid-1064.html

Employee Speak:

https://www.ambitionbox.com/overview/wissen-technology-overview

LinkedIn : https://www.linkedin.com/company/wissen-technology

About Wissen Interview Process:

https://www.wissen.com/blog/we-work-on-highly-complex-technology-projects-here-is-how-it-changes-whom-we-hire/

Wissen: A Great Place to Work

https://www.wissen.com/blog/wissen-is-a-great-place-to-work-says-the-great-place-to-work-r-institute-india

https://www.wissen.com/blog/here-is-what-ownership-and-commitment-mean-to-wissenites/

Wissen | Driving Digital Transformation

A technology consultancy that drives digital innovation by connecting strategy and execution, helping global clients to strengthen their core technology.