Jobs in the United States

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Added 1 min ago
AI Operations, Applied AI Research and Design Developer
Apple
Cupertino, CA
Strong Python skills, including data manipulation and analysis (pandas, SQL), REST APIs, and structured data (JSON/XML).
Added 2 mins ago
Data Engineer
ACE American Insurance Company
Philadelphia, PA · Jersey City, NJ · NY · Whitehouse Station, NJ
Python: Expert-level proficiency; strong command of data engineering libraries (pandas, PySpark, SQLAlchemy), code quality practices, and packaging.
Added 2 mins ago
Sr. Data Scientist
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Added 2 mins ago
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Knowledge of Shell or Python scripting for network testing and automation is a plus.
Added 2 mins ago
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3+ years of experience with manually auditing source code to find security issues or programming skills in one or more of: Java, .NET, Python or JavaScript frameworks.
Added 3 mins ago
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Data analysis experience with Python, MATLAB, Minitab or other data analysis tools
Added 4 mins ago
IG
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- From $39 USD / hour
2+ years C/C++ and/or Python, with strong C/C++ programming
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IG
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TCL/Python or similar Scripting experience is a plus.
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Added 4 mins ago
Data Scientist
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Strong proficiency in Python and/or R and experience working with large relational databases using SQL.
Added 4 mins ago
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- $117,800 to $200,300 USD / year
Programming Languages: Proficiency in C++, C#, Java, Python or R.
Added 5 mins ago
Software Engineer
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…and reporting solutions using a variety of languages such as Python, JavaScript, and CSS. Excellent candidates will have experience with React or other JavaScript/TypeScript…
Added 5 mins ago
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Senior Engineering Manager, DC Buying
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Familiarity with our stack: Python, TypeScript, React, GraphQL, Databricks, Azure.
Added 9 mins ago
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Boise, ID
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Experience with Python or other statistical programming tools.
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- $160,000 to $200,000 USD / year
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Added 10 mins ago
Principal Architect
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Added 10 mins ago
Cyber Security Engineer (5462)
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Experience developing automation with Python, PowerShell, REST APIs, infrastructure-as-code, or cloud-native services.
Added 10 mins ago
Advanced Forward Engineering - Implementation Engineer - Senior
EY
Washington, DC
Write and review production‑quality code (e.g., LangGraph, Python, orchestration glue, integration layers) aligned with enterprise delivery standards.
Added 10 mins ago
Lead Software Engineer
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5 years in at least two modern programming languages (Java, Python, JavaScript, ACE, IIB/ITX, Informatica preferred), and experience with at least three of the following: React, Angular…

Cognizant

Senior Python Developer (Onsite)

Washington, DC, United States

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Job details

Experience: Minimum 8 years of professional Python development experience delivering secure, scalable, production-quality backend applications or calculation services.
Posting language: English
Posted: Nov 6, 2026

Original job description

About the Role

We are seeking a Senior Python Developer to design, build, and support the modular services and REST APIs behind the EDGE V4 Calculation Engine. You will turn validated building science formulas, rules, and assumptions into accurate, maintainable, and testable Python components that serve global, high-volume use.

Key Responsibilities

Calculation Services and APIs

Design, develop, enhance, and support modular Python services and REST APIs for the EDGE V4 Calculation Engine.
Translate validated building science formulas, rules, assumptions, and dependency flows into accurate, maintainable, and testable Python components.
Develop and integrate calculation capabilities for energy, water, materials, embodied carbon, baseline standards, scenario simulation, explainability, anomaly management, and cost-related functions, as prioritized by the product backlog.

Architecture and Data

Build reusable calculation libraries, data models, validation rules, configuration services, and version-controlled datasets using Python, FastAPI, Pydantic, SQL, and PostgreSQL (or approved equivalent technologies).
Integrate calculation services with the EDGE V4 application through well-defined API contracts, structured inputs and outputs, secure authentication, and reliable error handling.
Optimize calculation performance, database queries, caching, asynchronous processing, and service scalability.

Quality and Testing

Create and maintain automated unit, integration, regression, and API tests using PyTest (or approved equivalent frameworks).
Support system integration testing and user acceptance testing.

Operations and Documentation

Implement production-grade logging, monitoring, auditability, exception handling, retries, configuration management, and operational support procedures.
Maintain technical documentation, API specifications, calculation traceability, data dictionaries, setup guides, deployment notes, and support runbooks.

Team Collaboration

Participate in solution design, code reviews, backlog refinement, sprint ceremonies, release planning, deployment, defect resolution, and post-deployment support.

Required Qualifications

Minimum 8 years of professional Python development experience delivering secure, scalable, production-quality backend applications or calculation services.
Strong proficiency in modern Python, object-oriented design, modular architecture, reusable libraries, type validation, dependency management, and coding standards such as PEP 8.
Hands-on experience developing REST APIs with FastAPI (or an approved equivalent), including request validation, API versioning, authentication, structured error responses, and OpenAPI documentation.
Strong knowledge of SQL and PostgreSQL, including data modeling, queries, functions, indexing, transaction management, and performance optimization.
Proven ability to identify opportunities for engineering automation and productivity gains using AI, Generative AI, intelligent agents, scripting, and developer tooling, with practical solutions that reduce manual effort, improve code quality, accelerate testing, and enhance team effectiveness.
Experience with Pydantic, PyTest, importlib, caching, configuration management, and development of reusable Python utilities and packages.
Experience translating complex formulas, business rules, dependency graphs, or scientific models into deterministic, traceable, and testable software components.

Preferred Qualifications

Experience designing automated unit, integration, regression, and API tests, with disciplined defect analysis and test evidence.
Experience with Microsoft Azure services, App Service or approved container platforms, Azure DevOps, CI/CD pipelines, secrets management, logging, monitoring, and application support.
Strong understanding of secure software development, data protection, auditability, resilience, performance, and production support practices.
Working knowledge of building science, energy and water efficiency, materials, embodied carbon, cost calculations, or sustainability standards.
Ability to collaborate with product owners, architects, building science specialists, QA teams, UX teams, DevOps teams, and business stakeholders.

Excellent analytical, documentation, communication, and problem-solving skills, with experience working in Agile and multicultural delivery teams across time zones.

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

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More about this job

Skills

Python
API development
Data models
SQL
PostgreSQL
ICT system integration
Documentation
Data modelling
Scientific modelling
Microsoft Azure
DevOps
CI/CD
Software development
Data protection
Communication skills
Problem solving
Agile

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