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Fullstack Software Engineer

Job in Brookline, Norfolk County, Massachusetts, 02445, USA
Listing for: Lever Test 11
Full Time position
Listed on 2026-04-17
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below

Job Title: Senior Full Stack Software Engineer (React, Mongo

DB, Type Script)

Location: [Remote / Hybrid / On-site – specify]
Employment Type: Full-Time
Experience Level: Senior (5+ years)

About the Role

We are seeking a highly skilled Senior Full Stack Software Engineer to design, build, and scale modern web applications using React, Mongo

DB, and Type Script. You will play a critical role in shaping architecture, mentoring developers, and delivering high-quality, performant software solutions. This role requires both deep technical expertise and strong collaboration skills.

Key Responsibilities
Full Stack Development
  • Design and develop scalable, high-performance web applications using React (frontend) and Node.js (backend).

  • Build and maintain RESTful and/or Graph

    QL APIs.

  • Develop reusable, modular, and maintainable components using Type Script across the stack.

  • Implement responsive UI/UX designs with a focus on usability and performance.

Backend & Database
  • Design, implement, and optimize Mongo

    DB schemas and queries.

  • Ensure data integrity, security, and performance in distributed systems.

  • Build robust backend services with proper error handling, logging, and monitoring.

Architecture & System Design
  • Lead system design discussions and contribute to architectural decisions.

  • Optimize applications for maximum speed and scalability.

  • Evaluate and introduce new technologies and best practices.

Code Quality & Best Practices
  • Write clean, testable, and well-documented code.

  • Conduct code reviews and enforce engineering standards.

  • Implement automated testing (unit, integration, end-to-end).

Collaboration & Leadership
  • Work closely with product managers, designers, and other engineers.

  • Mentor junior and mid-level developers.

  • Contribute to agile processes, sprint planning, and technical roadmaps.

Required Qualifications
  • 5+ years of professional experience in full stack development.

  • Strong proficiency in:

    • React (hooks, state management, component architecture)

    • Type Script (advanced typing, generics, interfaces)

    • Node.js (Express or similar frameworks)

    • MongoDB (schema design, aggregation pipelines, indexing)

  • Experience building and consuming RESTful or Graph

    QL APIs.

  • Solid understanding of HTML, CSS, and modern frontend tooling.

  • Familiarity with version control systems (Git).

  • Experience with cloud platforms (AWS, Azure, or GCP).

  • Strong problem-solving skills and attention to detail.

Preferred Qualifications
  • Experience with Next.js or other React frameworks.

  • Familiarity with microservices architecture.

  • Experience with Docker and container orchestration (Kubernetes).

  • Knowledge of CI/CD pipelines and Dev Ops practices.

  • Exposure to testing frameworks (Jest, Cypress, Playwright).

  • Experience with real-time technologies (Web Sockets, event-driven systems).

Soft Skills
  • Excellent communication and collaboration abilities.

  • Strong sense of ownership and accountability.

  • Ability to work independently and lead initiatives.

  • Mentorship and team leadership experience.

What We Offer
  • Competitive salary and equity (if applicable)

  • Flexible work environment (remote-friendly)

  • Health, dental, and vision insurance

  • Generous PTO and paid holidays

  • Professional development opportunities

  • Collaborative and innovative team culture

Success Metrics
  • Delivery of high-quality features on time

  • System reliability and performance improvements

  • Code quality and maintainability

  • Positive impact on team productivity and mentorship

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