Full-Stack Developer

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• Design and implement modern user interfaces using React, TypeScript, and Tailwind CSS.
• Develop scalable backend services and APIs using Python and FastAPI.
• Build and maintain RESTful APIs with proper authentication, pagination, and error handling.
• Create and manage database models and migrations using SQLAlchemy and Alembic.
• Write complex SQL queries and optimize performance in PostgreSQL environments.
• Implement dashboards and data visualizations using Chart.js or equivalent libraries.
• Integrate with external services such as Stripe, HubSpot, Microsoft OAuth, and SendGrid.
• Contribute to infrastructure and deployment processes across DEV, UAT, and PRD environments.
• Participate in testing strategies including unit testing and end-to-end testing.
• Extend and enhance an established production platform while maintaining coding standards and architectural consistency., Backend / API / Database (35%):
• Python 3.11+ with FastAPI (routes, middleware, Pydantic models, JWT authentication)
• SQLAlchemy ORM and Alembic migrations
• PostgreSQL including complex queries, joins, and multi-tenant data models
• Strong understanding of REST API design principles
• Must be comfortable with:

• Schema design
• Migrations
• Ongoing evolution of data models

Infrastructure / Integrations / Testing (20%): \u00a0

• Azure:\u00a0 Synapse Analytics (data warehouse queries) \u2013 for large scale data processing, App Service, Azure Functions, Pipelines (CI/CD)

• AWS Cloud Infrastructure would also be considered in lieu of Azure Cloud experience

• Docker Containerization
• NGINX \u2013 for connecting front-end clients to backend services
• Third-party integrations: Stripe, HubSpot, Microsoft OAuth (MSAL), SendGrid
• QA Testing - Playwright (E2E testing of modern web applications) or Vitest (unit testing)

• Thrives in a full ownership model, delivering features from database to UI to deployment
• Is comfortable navigating and enhancing a large existing production codebase
• Writes clean, efficient, maintainable code and follows established development conventions
• Works effectively across multiple environments including development, testing, and production, * React 18+ (functional components, hooks, Context API) \u2013 primary framework in use
• TypeScript with strict typing, interfaces, and generics
• Tailwind CSS for responsive, utility-first styling
• Chart.js or similar visualization libraries for dashboards and time-series data
• Experience with React Router, Axios, and Vite
• Working with Git for version control and source code management, * Experience building or supporting multi-tenant SaaS platforms
• Domain exposure to petrochemical or commodity trading markets, preferred not required
• Familiarity with AI-assisted tools such as Copilot, Claude, or similar tools used development workflows

Vaco by Highspring is seeking an experienced Full-Stack Developer to help build and enhance a modern SaaS platform focused on data-driven applications and analytics for a client based in Benbrook, TX (Southwest Fort Worth, TX). This role involves a full-ownership model working across the entire stack\u2014from user interface development to backend APIs and Azure cloud infrastructure.\u00a0 The position requires a self-directed developer who is comfortable wearing multiple hats (Developer, BA, QA, etc.) working within an existing codebase and taking ownership of full feature delivery, including database design, API development, frontend implementation, and deployment.\u00a0 Your responsibilities will include feature development, bug fixing, maintaining existing integrations, building new integrations, and supporting ongoing enhances as new data streams are introduced. This position is hybrid onsite 2-days per week in Benbrook, TX; candidates must pass a criminal background check and drug screen and be legally authorized to work in the United States, as our client is unable to sponsor at this time.\u00a0, Determining compensation for this role (and others) at Vaco/Highspring depends upon a wide array of factors including but not limited to the individual\u2019s skill sets, experience and training, licensure and certifications, office location and other geographic considerations, as well as other business and organizational needs. With that said, as required by local law in geographies that require salary range disclosure, Vaco/Highspring notes the salary range for the role is noted in this job posting. The individual may also be eligible for discretionary bonuses, and can participate in medical, dental, and vision benefits as well as the company\u2019s 401(k) retirement plan. Additional disclaimer: Unless otherwise noted in the job description, the position Vaco/Highspring is filing for is occupied. Please note, however, that Vaco/Highspring is regularly asked to provide talent to other organizations. By submitting to this position, you are agreeing to be included