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Senior Full-Stack Software Engineer

Software Development
JavaScript
Python
React
Node.js
SQL

This is a fully remote role, allowing you to work from anywhere in the world.

About Synthflow

At Synthflow we’re building the easiest way for businesses to create AI-powered phone agents. No coding, no fuss—just smarter automation. We’re passionate about delivering the future of voice technology with lightning-fast, scalable solutions. It’s an exciting time at Synthflow: we’re early, fast-growing, and laser-focused on impact. Join us to do the best work of your career while helping businesses thrive.

About the role

We’re looking for a Full-Stack Engineer with a strong focus on JavaScript and Python to build and scale Synthflow’s core platform.

Your responsibilities will include:

  • Build and maintain our full-stack architecture using React/Next.js, Node.js, and to deliver a robust, scalable, and high-performance platform.

  • Implement user-facing features and backend services that support our evolving product.

  • Collaborate closely with designers, product managers, and other engineers to deliver high-quality, user-friendly solutions.

  • Optimize SQL queries and database interactions to ensure efficiency across our application stack.

  • Leverage your experience in automated testing and CI/CD pipelines to drive quality and streamline deployment.

  • Work in a fast-paced, startup environment where innovation, speed, and scalability are key.

You Have:

  • A minimum of 4 years of professional experience as a Full-Stack Engineer with a strong focus on JavaScript and Python

  • Extensive experience with React, TypeScript, CSS, Go, and FastAPI.

  • Strong proficiency in SQL and optimizing complex queries.

  • Experience with cloud platforms such as GCP or AWS.

  • Familiarity with DevOps and containerization tools like Docker.

  • Strong verbal and written communication skills, with a track record of effective collaboration in cross-functional teams.

  • Contribute to a culture of learning and knowledge-sharing, participating in code reviews and pair programming.

Beyond the basics:

  • Experience with Redis and relational databases for caching and data handling.

  • Experience with AI Tooling and Framework like Langchain or OpenAI SDK

  • Early-stage startup experience is a big plus, as we value adaptability and innovative problem-solving.

What We Offer:

  • Autonomy at speed: High-ownership roles in a fast-moving startup.

  • Remote-first flexibility: Contribute from anywhere, on your schedule.

  • Cutting-edge technology: Work on what interests you most.

  • Career growth: Scale your impact as the company grows.

  • Rewarding package: Competitive pay, equity options, and comprehensive benefits that reflect your skills and experience. 

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