Job Description
Python Developer
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Onsite - 3 or 4 days per week / Sparta, NJ
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Perm Role
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Our client is looking for a Software Developer to help drive the Python/Django systems that power their business — billing, customer accounts, payments, and service management.
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You'll work on a small, senior development team, with the scope to shape architecture, mentor early-career engineers, and take the lead on both internal and external systems.
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Key Responsibilities:
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- Architect and own significant portions of our backend systems, from design through production
- Lead technical decision-making on new features, integrations, and system improvements
- Mentor and review the work of early-career developers; raise the team's overall code quality bar
- Drive engineering best practices — testing standards, CI/CD, code review discipline
- Own resolution of complex, ambiguous production issues, including in code you didn't write
- Partner directly with leadership on technical roadmap, prioritization, and trade-offs
- Evaluate and integrate third-party APIs and internal system integrations
- Drive database design and query/performance optimization across PostgreSQL and SQL systems
- Model effective use of AI coding tools (Copilot, Claude, Cursor) and help the team implement similar tools
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Skills & Qualifications:
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- 7+ years of professional software development experience
- Strong command of Python and Django (or a comparable web framework) in a production environment
- Deep working knowledge of SQL and relational databases, PostgreSQL preferred — schema design, query optimization
- Strong understanding of REST API design, integration patterns, and system architecture trade-offs
- Demonstrated ability to independently troubleshoot and resolve complex production issues
- Strong Git workflows and code review discipline
- Comfortable with Docker and Linux environments, including deployment pipelines
- Track record of technical mentorship or informal leadership
- Regular, effective use of AI coding tools to accelerate development without sacrificing quality
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Preferred Skills & Qualifications:
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- Experience with billing or payment systems in production
- Exposure to Celery/RabbitMQ or other background-task/async systems
- PostgreSQL/PostGIS experience
- Microsoft SQL Server experience
- ASP.NET MVC exposure
- React or other frontend framework experience
- Ownership of CI/CD pipelines and deployment processes
- Competitive programming, hackathons, or open-source contributions
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