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Lead Python Software Develop Jobs (NOW HIRING)

CYNET SYSTEMS

Lead Python Developer

Seattle, WA · On-site

$45 - $50/hr

Strong understanding of secure software development, data protection, auditability, resilience ... Design, develop, enhance, and support modular Python services and REST APIs for the calculation ...

Next Matter

Software Engineer (Python)

Los Angeles, CA · On-site

Develop and maintain a Python software framework for engineers to write automated tests * Design and maintain systems for data aggregation and analysis * Build UIs that interface with hardware and ...

Jobsbridge

Python Software Developer

San Jose, CA · On-site

$59 - $81.25/hr

Self-directed work style with minimum supervision More than 8 years of experience developing/testing/deploying secure production quality software products Expert level programming (Python, Java) and ...

Fitch Solutions

Python Software Engineer

Manhattan, NY · On-site

$140K - $160K/yr

Develop, test and maintain high-quality software using Python programming language. * Participate in the entire software development lifecycle, building, testing and delivering high-quality solutions.

Jobsbridge

Python Software Developer

San Jose, CA · On-site

$59 - $81.25/hr

Self-directed work style with minimum supervision More than 8 years of experience developing/testing/deploying secure production quality software products Expert level programming (Python, Java) and ...

Amtex Enterprises Inc

South San Francisco/PST Experience: 7+ years in full-stack software/product engineering, including ... We are seeking an experienced Python Full Stack Architect with strong expertise in Python, FasAPI ...

Apex Informatics

Lead Python Developer

$143K - $176K/yr

Title: Python Lead with MongoDB Location: West Coast- Remote Duration: 6-12 months extendable ... Develop and maintain robust and efficient Python-based applications and APIs. * Design and ...

AnySignal

Software Engineer (Python)

Los Angeles, CA · On-site

$120K - $170K/yr

The Company AnySignal is developing the next generation of RF products and services for some of the ... The Role As a Python Software Engineer, you will own AnySignal's data aggregation, test, and ...

MANTECH

CNO Python Software Engineer

Hanover, MD · On-site

Debug, troubleshoot, and modify software, and assist with developing and executing test procedures ... Experience with Python programming * Experience with Docker and Kubernetes and Ansible * Experience ...

Endygo

Python Software Developer

Arlington, TX · On-site

$45.25 - $62.25/hr

We are looking for a Python Developer to lead our programming efforts and help us develop and maintain our internal and proprietary ERP. The developer responsibilities include writing and testing ...

MANTECH

CNO Python Software Engineer

Hanover, MD · On-site

Debug, troubleshoot, and modify software, and assist with developing and executing test procedures ... Experience with Python programming * Experience with Docker and Kubernetes and Ansible * Experience ...

Endygo

Python Software Developer

Arlington, TX · On-site

$45.25 - $62.25/hr

We are looking for a Python Developer to lead our programming efforts and help us develop and maintain our internal and proprietary ERP. The developer responsibilities include writing and testing ...

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How much do lead python software develop jobs pay per year?

As of Sep 9, 2026, the average yearly pay for lead python software develop in the United States is $156,127.00, according to ZipRecruiter salary data. Most workers in this role earn between $140,000.00 and $172,000.00 per year, depending on experience, location, and employer.

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Infographic showing various Lead Python Software Develop job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 88% Full Time, 8% Part Time, and 3% Contract. Highlights an 85% Physical, 3% Hybrid, and 12% Remote job distribution, with an average salary of $156,127 per year, or $75.1 per hour.

Lead Python Developer

Seattle, WA • On-site

CYNET SYSTEMS
IT Services • 501 - 1,000 employees
Learn more about CYNET SYSTEMSexternal

$45 - $50/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Posted 7 days ago

Key responsibilities

  • Design, develop, enhance, and support modular Python services and REST APIs for the 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.

Job description

Job Overview:

Pay Range: $45.00hr - $50.00hr

Requirement/Must Have:

  • Minimum 5+ years of professional Python development experience delivering secure, scalable, and 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 using FastAPI or an approved equivalent framework, including request validation, API versioning, authentication, structured error responses, and OpenAPI documentation.
  • Strong knowledge of SQL and PostgreSQL, including data modelling, queries, functions, indexing, transaction management, and performance optimization.
  • Proven ability to identify opportunities for engineering automation and productivity improvements using AI, Generative AI, intelligent agents, scripting, and developer tooling.
  • 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.
  • 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, continuous integration and deployment pipelines, secrets management, logging, monitoring, and application support.
  • Strong understanding of secure software development, data protection, auditability, resilience, performance, and production support practices.

Responsibilities:

  • Design, develop, enhance, and support modular Python services and REST APIs for the 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.
  • Build reusable calculation libraries, data models, validation rules, configuration services, and version-controlled datasets using Python, FastAPI, Pydantic, SQL, and PostgreSQL.
  • Integrate calculation services with the 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 for global usage and high-volume calculation scenarios.
  • Create and maintain automated unit, integration, regression, and API tests using PyTest or approved equivalent frameworks.
  • Maintain technical documentation, API specifications, calculation traceability, data dictionaries, setup guides, deployment notes, and support runbooks.
  • Participate in solution design, code reviews, backlog refinement, sprint ceremonies, release planning, deployment, defect resolution, and post-deployment support.
  • Implement production-grade logging, monitoring, auditability, exception handling, retries, configuration management, and operational support procedures.

Nice to Have:

  • Working knowledge of building science, energy and water efficiency, materials, embodied carbon, cost calculations, or sustainability standards is preferred.

Skills:

  • Python.
  • FastAPI.
  • SQL.
  • PostgreSQL.
  • Pydantic.
  • PyTest.
  • Microsoft Azure.
  • Azure DevOps.
  • REST APIs.
  • Generative AI.
  • Object-oriented design.
  • PEP 8.

Qualification And Education:

  • Strong verbal and written communication skills.
  • Excellent communication and presentation skills.
  • Ability to communicate effectively with stakeholders.

Benefits:

Our Benefits Include:

  • Medical, Dental, and Vision Insurance
  • 401(k) Retirement Plan
  • Health Savings Account (HSA)
  • Disability Insurance (Short-Term and Long-Term)
  • Life and AD&D Insurance
  • Paid Sick Leave (where required by applicable state or local law)
  • Supplemental Insurance Plans
  • Identity Theft Protection
  • Pet Insurance
  • Employee Wellness Programs
  • Employee Assistance Program (EAP)
  • Career Growth and Professional Development Opportunities

Disclaimer: Benefits eligibility, accrual rates, and usage limits may vary based on employment status, length of service, and work location. Paid Sick Leave is provided in strict accordance with applicable state and municipal mandates. Cynet Systems Inc. reserves the right to modify, amend, or terminate any benefit plans at any time in accordance with applicable laws.


About Cynet Systems


Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading technology staffing and workforce solutions company serving Fortune 500 companies, government agencies, and enterprise organizations across the United States and Canada. We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and professional staffing, powered by a high-performing recruitment engine operating across North America and Asia.

As a nationally and locally certified Minority Business Enterprise (MBE), Cynet Systems is committed to helping organizations build high-performing teams while empowering professionals to grow rewarding careers. Our organization is certified to ISO 9001, ISO 14001, ISO 27001, and SOC 2 Type II standards, reflecting our commitment to quality, security, operational excellence, and customer success.

Cynet Systems logo

About Cynet Systems

Sourced by ZipRecruiter

Cynet Systems Inc is a staffing and recruiting corporation nestled in Ashburn, VA, USA. Established in 2010, the company operates within the Information Technology and Services sector, specializing in providing effective workforce solutions to different business needs, including IT consulting, direct hire, and contract staffing services. Through the years, Cynet Systems has built an impressive portfolio, going beyond borders and expanding its operations internationally in Canada and India. Rooted in its core values of teamwork, leadership, and commitment, Cynet Systems helps businesses unlock their full potential by providing versatile and competent professionals that perfectly align with their needs. Fueled by their unwavering mission to deliver top-tier talent to businesses worldwide, Cynet Systems garnered various recognitions including SIA's fastest-growing staffing firms and Best Place to Work in Virginia for 2019.

Industry

It services

Company size

501 - 1,000 Employees

Headquarters location

Sterling, VA, US

Year founded

2010

Social media

Twitter

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