
Software Engineer, Full Stack – Senior, Staff
Kustomer
full-time
Posted on:
Location Type: Hybrid
Location: New York City • New York • United States
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Salary
💰 $130,000 - $215,000 per year
Job Level
About the role
- Design, develop, and deploy robust and scalable full-stack web applications using Node.js, React, Golang, MongoDB, and AWS
- Collaborate with cross-functional teams, including product managers, designers, and other engineers, to understand project requirements and translate them into technical solutions.
- Build efficient and reusable backend and frontend components and libraries
- Develop APIs and integrate with external services and databases, ensuring data integrity and security
- Write clean, maintainable, and well-documented code following best practices and coding standards
- Optimize application performance by implementing caching mechanisms, efficient algorithms, and database indexing
- Implement front-end interfaces with a focus on user experience, responsiveness, and accessibility
- Conduct thorough testing, including unit testing and integration testing, to ensure the quality and reliability of the application
- Collaborate with Infrastructure Engineers to deploy and maintain applications on AWS, ensuring high availability and scalability
- Monitor and troubleshoot production issues, providing timely resolutions and proactive bug fixes
- Stay up to date with the latest industry trends, tools, and technologies related to full-stack development and propose improvements to the development process
- Conduct code reviews, provide constructive feedback, and mentor junior developers to ensure code quality and continuous improvement
- Use AI tools to support day-to-day development, including writing, debugging, testing, and validating code
- Contribute to the design and implementation of AI-powered features where they enhance end-user experience or improve platform efficiency
- Stay current with emerging AI development tools and practices, and help the team adopt those that improve velocity and quality
Requirements
- 7+ years of progressive software development experience and a Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience)
- Proficiency in one of the modern server-side languages such as JavaScript, Go, Python, or Rust
- Experience in building web applications, preferably using React.js, and familiarity with front-end development principles including responsive design and cross-browser compatibility
- Deep understanding of software engineering principles, design patterns, and best practices for building scalable and maintainable code
- Experience with RESTful API development, integrating with external services and databases
- Familiarity with cloud platforms such as AWS or GCP, and experience with cloud services like AWS Lambda or Firebase
- Familiarity with version control systems, such as Git, and collaborative development workflows
- Ability to diagnose and debug complex issues, optimize application performance, and identify areas for improvement
- Experience using AI tools to support software development tasks such as code generation, debugging, testing, or documentation
- Hands-on experience with modern AI developer tools such as GitHub Copilot, Cursor, Claude Code, or similar
Benefits
- 100% healthcare coverage
- 401K
- WiFi and Mobile reimbursement
- Generous vacation policy
- Pension (in UK)
- Supplemental health insurance (in UK)
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Node.jsReactGolangMongoDBAWSRESTful API developmentJavaScriptPythonsoftware engineering principlesAI tools
Soft Skills
collaborationcommunicationmentoringproblem-solvingcode reviewconstructive feedbackuser experience focusresponsivenessproactive troubleshootingcontinuous improvement
Certifications
Bachelor's degree in Computer ScienceBachelor's degree in Software Engineering