Kustomer · 20 hours ago
Software Engineer, Full Stack
United States
Full-time
Remote
Senior Level
$155K/yr - $215K/yr
5+ years expKustomer is an industry-leading conversational CRM platform focused on enhancing customer experiences through intelligent tools. The Full Stack Software Engineer will be responsible for designing, developing, and deploying robust web applications while collaborating with cross-functional teams to deliver high-quality features.
CRMCustomer ServiceSaaS
Responsibilities
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
Qualification
Required
5+ 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
Preferred
Familiarity with integrating AI or ML-powered capabilities into web applications, even at a prototype or feature level
Exposure to integrating third-party AI APIs or frameworks (e.g., OpenAI, Anthropic, LangChain, or vector databases like Pinecone)
Interest in exploring how AI can enhance developer workflows and improve product functionality
Experience with testing frameworks and methodologies (e.g., Jest, Playwright, Cypress, Mocha, Selenium) and a focus on code quality through unit testing and integration testing
Strong Proficiency in AWS services such as EC2, S3, Lambda, API Gateway, and CloudFormation
Strong understanding of NoSQL databases, particularly MongoDB, including data modeling and query optimization
Familiarity with containerization technologies like Docker and container orchestration frameworks like Kubernetes
Familiarity with CI/CD pipelines and automation tools for building, testing, and deploying applications
Familiarity with authentication and authorization mechanisms (e.g., OAuth, JWT)
Github activity showing thoughtful, relevant contributions
Benefits
Kustomer offers an array of benefits including competitive salaries and stock options.
In the U.S. we offer 100% healthcare coverage, 401K, WiFi and Mobile reimbursement, and a generous vacation policy;
In the UK we also offer pension, supplemental health insurance and other perks.
Company
Kustomer
Kustomer is an omnichannel Software-as-a-Service (SaaS) CRM platform specializing in customer service.
201-500 employees
H1B Sponsorship
Kustomer has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (5)
2024 (5)
2023 (3)
2022 (3)
2021 (5)
2020 (2)
Funding
Current Stage
Late StageTotal Funding
$233.5MKey Investors
Battery Ventures,RedpointCoatueTiger Global Management
2025-07-23Series Unknown
2023-05-15Series Unknown· $60M
2020-11-30Acquired
Leadership Team
Brad Birnbaum
Chief Executive Officer
Jeremy Suriel
Chief Technology Officer
Recent News
2025-12-18
Destination CRM
2025-12-12
Company data provided by crunchbase