Freelance Python Api Developer Jobs in Germantown, WI

Every industry has a moment when technology finally catches up to the people doing the work.

We are building that moment for legal.

Neostella creates connected legal technology that brings together the data, workflows, and systems legal teams rely on every day.

Our platform helps firms move faster, collaborate more effectively, and focus on delivering stronger outcomes for their clients.

We believe the legal industry deserves more from its technology. That belief drives us to challenge the status quo and build systems designed for the way modern teams actually work.

We build with courage and measure our work by the impact it creates for our customers.

Recognized as one of Forbes' Best Startup Employers in the Americas for 2026, we are growing with people who want their work to matter.

If you want to build software that changes how an industry operates, you belong here. As we continue to expand, we are seeking a Python Developer to join our team!

Neostella is scaling fast, and as our platform grows in complexity and capability, the need for reliable, scalable, and well-integrated systems becomes critical. Our ability to deliver seamless experiences for our customers depends heavily on how effectively our backend services and integrations are designed and maintained.

This role exists because we need engineers who can build and support the foundational systems that power our platform. The Software Engineer will play a key role in developing APIs, integrating with third-party systems, and leveraging AWS services to ensure our applications are performant, scalable, and maintainable.

Your work will directly impact how quickly we can deliver new features, how well our systems communicate, and how effectively we scale as a business. This is an opportunity to contribute to meaningful technical work while growing your skills in a fast-paced SaaS environment.

As a Python Developer, you will be responsible for building, integrating, and maintaining backend services that support Neostella's platform. You'll work primarily in Python, developing APIs and serverless workflows that connect internal systems with third-party applications.

You will collaborate closely with other engineers, Technical Leads, and cross-functional teams to ensure code quality, system reliability, and successful delivery of features. This includes participating in integration testing, contributing to technical documentation, and maintaining alignment with sprint goals and timelines.

This role requires a balance of technical execution and collaboration. You'll be expected to write clean, production-ready code while also contributing to team processes, responding to feedback, and continuously improving your approach to development.

We're looking for an engineer who combines strong technical fundamentals with a growth mindset and collaborative approach. You are comfortable working with backend systems, APIs, and cloud services, and you're eager to deepen your expertise in modern, serverless architectures.

You take ownership of your work, write clean and maintainable code, and are proactive in solving problems. You're open to feedback, committed to continuous learning, and comfortable working in agile environments where priorities can evolve quickly.

You communicate clearly, work well with others, and understand the importance of building systems that are not only functional but scalable and maintainable.

• Write high-quality, production-ready code in Python, following best practices and established coding standards
• Collaborate with other developers to conduct integration testing and ensure code functionality within the development environment before deployment to QA
• Design and develop integrations between internal and third-party applications using REST APIs and AWS services
• Create and maintain AWS Lambda functions and workflows using AWS Step Functions to support scalable and reliable APIs
• Interact with AWS services such as API Gateway, SQS, Step Functions, and others to power application functionality
• Analyze API integration documentation and translate requirements into clear, functional implementation plans
• Contribute to technical documentation for features and systems to support maintainability and onboarding
• Participate in agile ceremonies, collaborating with cross-functional teams to meet sprint goals and timelines
• Continuously seek feedback, respond to peer code reviews, and contribute to a culture of learning and improvement

Requirements

• Bachelor's degree in Computer Science or related field preferred

• 2+ years of experience in software development
• Proficiency in Python and experience building APIs and backend services
• Experience with REST API integrations; familiarity with SOAP is a plus
• Understanding of object-oriented programming principles
• Exposure to or interest in serverless architecture and frameworks (e.g., Serverless Framework)
• Familiarity with AWS services such as Lambda, Step Functions, API Gateway, and SQS
• Basic understanding of agile methodologies (Scrum experience is a plus)
• Strong time management and problem-solving skills
• Excellent written and verbal communication skills in English
• Comfortable receiving feedback and committed to continuous growth

• Languages & Frameworks: Python, Serverless Framework
• Cloud: AWS (Lambda, Step Functions, API Gateway, SQS, etc.)
• Dev Tools: GitHub, Jira
• Monitoring/Logging: Coralogix
• APIs: REST, SOAP

Benefits

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k)
• Paid Time Off (Vacation & Holidays)
• Training & Development
• Work From Home
• Travel Bonus
• Maternity & Paternal Leave