Full Stack Engineer

Long Finch Technologies

North Andover, MA

Posted On: Sep 30, 2025

Posted On: Sep 30, 2025

Job Overview

Job Type

Full-time

Experience

12 - 18 Years

Salary

$100,000 - $120,000 Per Year

Work Arrangement

On-Site

Travel Requirement

0%

Required Skills

  • MySQL
  • PostgreSQL
  • Cloud infrastructure
  • AWS
  • Node.js
  • React.js
  • Modern frontend
Job Description

We are seeking a Full Stack Engineer experienced in building and managing modern web applications with React, Node.js, AWS, MySQL, and PostgreSQL. The candidate will take responsibility for an existing application, understand it end-to-end, and ensure a seamless transition from the current resource.

The role requires strong technical depth across backend, frontend, and cloud infrastructure, combined with an ownership mindset to manage application health, enhancements, and stakeholder communication.

 

Key Responsibilities
  • Take complete ownership of an existing full-stack application hosted on AWS.
  • Work closely with the current resource to understand the system’s architecture, data model, APIs, and integrations.
  • Maintain and enhance backend services built with Node.js, ensuring scalability, reliability, and performance.
  • Develop and optimize frontend components using React for a seamless user experience.
  • Manage and optimize relational databases (MySQL and PostgreSQL) for high availability and efficient performance.
  • Implement application deployments, monitoring, and cost optimization strategies on AWS.
  • Troubleshoot issues across the stack (frontend, backend, database, cloud).
  • Collaborate with stakeholders and act as the single point of accountability for the application.

 

Required Skills/Experience
  • Strong experience with AWS services (EC2, RDS, S3, Lambda, API Gateway, etc.).
  • Proficiency in Node.js for backend development.
  • Expertise in React.js for modern frontend development.
  • Solid understanding and hands-on experience with MySQL and PostgreSQL (schema design, indexing, query optimization).
  • Knowledge of REST APIs, authentication, and integration best practices.
  • Ability to quickly analyze, document, and own existing systems.
  • Strong problem-solving and debugging skills.
  • Excellent communication skills for cross-functional collaboration. 

 

Preferred Qualifications
  • Familiarity with CI/CD pipelines and DevOps practices.
  • Experience with containerization (Docker, Kubernetes) on AWS.
  • Exposure to caching (Redis, Memcached) and messaging systems.
  • Background in application transition or ownership roles

Job ID: LF250108


Posted By

Mayank Rawat

Bilingual Recruiter


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