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# Senior Software Engineer (Full Stack - TypeScript / React)

- **Company:** SimpleConsign, LLC
- **Location:** Dedham, MA, United States
- **Experience:** Expert
- **Salary:** $135,000.0 - $165,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Software as a Service, Software Quality, Code Review, Persistent Data Structure, Pair Programming, Next.js, Software Engineering, TypeScript, ReactJS, Technical Debt, Backend, Production Code, Restful APIs
- **Published:** October 13, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=e8e8689d07028602

## About the Role

* Bachelor's degree or equivalent practical experience.
 * 5+ years of professional software engineering experience (with a proven track record of delivering complex features).
 * Strong expertise in TypeScript and modern JavaScript/React ecosystems.
 * Solid understanding of backend development, RESTful APIs, and data persistence.
 * Strong communication skills and a highly collaborative mindset., * Production experience with Next.js and full-stack web applications.
 * Familiarity with AWS infrastructure and deployment.
 * Experience with Java.
 * Familiarity with SaaS platforms, transactional systems, or data-heavy applications.
 * Experience maintaining or improving production systems used by real customers.
 * Background in retail, resale, or inventory-driven systems is a plus.

## Description

We are looking for a Senior Software Engineer who will be a core contributor to the delivery and day-to-day health of the SimpleConsign platform. This is a hands-on role with a direct impact on our product feature roadmap and codebase. You will work primarily in TypeScript and Next.js, implementing robust full-stack solutions, promoting strong engineering practices, and helping guide technical decisions within the team. Experience with Java is a plus, particularly for backend or legacy system work., Technical Delivery & Execution

 * Design, build, and maintain robust, scalable full-stack features using TypeScript and Next.js.
 * Contribute to backend services, APIs, and data models that support complex resale workflows.
 * Write high-quality, production-ready code that is reliable, secure, and well-tested.
 * Provide thoughtful, constructive code reviews to maintain high engineering standards.

Engineering Practices & Quality

 * Help define and adhere to team engineering standards for code quality, performance, and reliability.
 * Identify technical debt and operational risks within your scope and proactively implement sustainable fixes.
 * Improve system performance, observability, and the day-to-day developer experience.
 * Balance efficient, near-term feature delivery with the long-term maintainability of the codebase.

Collaboration & Mentorship

 * Partner closely with product, support, and operations to deeply understand customer needs and refine feature requirements.
 * Translate business problems into practical, elegant technical solutions.
 * Mentor mid-level and junior engineers through collaborative design discussions, paired programming, and code reviews.
 * Actively contribute to a healthy, supportive, and growth-oriented team culture., * Real-world impact: Your work directly supports resale businesses that rely on accuracy, trust, and operational efficiency every day
 * Meaningful technical ownership: You'll help shape the architecture and technical direction of a mature, revenue-generating SaaS platform
 * Small, capable team: Work alongside experienced engineers where your decisions and contributions have visible impact