Senior Javascript Engineer

Hamster; San Francisco (CA); On-site; USD 120,000 - 150,000; Full time

Job summary

A tech company in California is seeking an experienced JavaScript Engineer to lead web applications design and development. You will work primarily with Next.js and NestJS, focusing on creating scalable and high-performance applications, including real-time messaging solutions. The ideal candidate will have over 5 years of full-stack experience, strong proficiency in TypeScript and PostgreSQL, as well as proven expertise in AI prompt engineering. This role involves mentoring junior engineers and collaborating closely with cross-functional teams.

Qualifications

• 5+ years of experience as a JavaScript Engineer focused on full-stack development.
• Proficiency in TypeScript and experience with PostgreSQL.
• Understanding of real-time messaging systems and AI prompt engineering.

Responsibilities

• Lead the design, development, and deployment of web applications.
• Develop efficient backend services with Node.js.
• Implement and maintain real-time messaging solutions.

Skills

Full-stack development

TypeScript

JavaScript frameworks

AI prompt engineering

PostgreSQL

Communication

Problem-solving

Education

Bachelor's degree in Computer Science or related field

Tools

Next.js

NestJS

Node.js

Docker

Kubernetes

Job description

You will need a strong background in modern JavaScript frameworks and a deep understanding of full-stack development. You will be instrumental in designing, developing, and maintaining scalable and high-performance applications, with a particular focus on integrating cutting-edge AI capabilities.

Responsibilities

• Lead the design, development, and deployment of complex web applications using Next.js and NestJS.
• Develop robust and efficient backend services with Node.js, interacting with PostgreSQL databases.
• Implement and maintain real-time messaging solutions.
• Apply expertise in AI prompt engineering to optimize interactions with large language models.
• Contribute to the training and fine-tuning of machine learning models.
• Develop and integrate features related to embedding, chunking, and Retrieval Augmented Generation (RAG).
• Write clean, maintainable, and well-documented code in TypeScript.
• Collaborate closely with product managers, designers, and other engineers to define, design, and ship new features.
• Mentor junior engineers and contribute to best practices within the team.
• Participate in code reviews to ensure code quality and adherence to standards.

Required Skills and Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
• 5+ years of experience as a JavaScript Engineer, with a focus on full‑stack development.
• Proficiency in TypeScript.
• Strong experience with PostgreSQL.
• Extensive experience with Next.js for front‑end development.
• Demonstrated experience with NestJS for backend development.
• Proven experience with AI prompt engineering.
• Familiarity with model training concepts and practices.
• Experience implementing and managing real‑time messaging systems.
• Understanding and practical application of embedding and chunking techniques.
• Experience with Retrieval Augmented Generation (RAG) implementation.
• Solid understanding of software design principles, data structures, and algorithms.
• Excellent problem‑solving skills and attention to detail.
• Strong communication and interpersonal skills.

Preferred Qualifications

• Experience with cloud platforms (AWS, Azure, GCP).
• Familiarity with containerization technologies (Docker, Kubernetes).
• Experience with testing frameworks (e.g., Jest, React Testing Library).