Join a forward-thinking tech team that builds apps and digital experiences for some of the world’s biggest brands. Nine Twenty's client are looking for a Senior Developer who thrives on solving complex problems, shaping solutions, and mentoring others along the way. If you’re passionate about React, Node.js, and building high-quality software that makes a real impact, this is your chance to take ownership of exciting projects, work with cutting-edge technologies (including AI tools), and grow in a collaborative, innovative environment.
What you’ll do
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Lead by example within a team of talented developers—coding hands-on while mentoring and guiding others.
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Work closely with Project Managers and Technical Leads to deliver high-quality, on-time solutions—sometimes owning projects end-to-end.
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Collaborate directly with clients to gather requirements, scope work, and provide accurate estimates.
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Build and maintain robust, scalable applications—developing new features, improving existing functionality, and troubleshooting issues.
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Work across modern technologies like React.js, Node.js, Docker, MySQL (plus exposure to TypeScript, YAML, PHP).
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Drive technical improvements, adopt best practices, and champion clean, efficient, testable code.
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Get involved in AI-driven development, using tools like AWS AI, Azure AI, and OpenAI technologies.
What you’ll bring
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4+ years of experience in software development with a strong focus on React.js, Node.js, and React Native.
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Cloud platform expertise (AWS or Azure).
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Hands-on experience with AI toolchains and platforms (e.g., Amazon Bedrock, Azure AI Foundry, OpenAI ChatGPT).
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Proven track record in mentoring, leading small projects, and delivering high-quality results.
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Strong knowledge of DevOps and CI/CD practices.
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Excellent communication skills with the ability to work across technical and non-technical teams.
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Solid problem-solving skills, with the ability to manage multiple priorities effectively.
Nice to have: React Native, PHP, enterprise development with Microsoft platforms (Teams, M365/Graph API, Entra).
Why you’ll love it here
You’ll join a team that values innovation, collaboration, and personal growth. Expect to work on exciting projects for big-name clients, explore new tech, and be part of an environment that encourages ideas and supports career development.