CareerPlanGet AI match score →

Software Development Engineer III

💼 Full-time🗓 2026-06-25

Core

Designing, building, and scaling critical platform services using the MERN stack with an emphasis on server-side architecture and API development.

Role type

Senior IC Software Development Engineer (MERN stack)

Builds

Scalable client- and server-side solutions, APIs, backend services, and database integrations

Domain

Internet / SaaS / Platform Engineering

Deliverable

production ML models | product features | infrastructure

Required skills

JavaScript (ES6+), Node.js, Express, React.js, MongoDB, RESTful API design, SPA development, unit and integration testing, CI/CD pipelines, Git

Preferred skills

Fastify, NestJS, TDD

Technologies

MongoDB, Express, React.js, Node.js, Fastify, NestJS

Responsibilities

Design and implement scalable client- and server-side solutions; Write high-quality, testable, and maintainable code across the full stack; Develop and maintain comprehensive unit, integration, and end-to-end tests; Diagnose and troubleshoot production issues; Participate in Agile ceremonies; Engage in architectural discussions and technical design reviews; Identify opportunities to improve system performance and reliability; Partner cross-functionally with product managers, designers, and QA; Actively participate in peer code reviews; Demonstrate ownership mindset for long-term technical roadmap discussions

Seniority

Senior, hands-on IC

Rewrite
## About the Role As a Software Development Engineer III at Palmetto, you will play a key role in designing, building, and scaling critical platform services using the MERN stack (MongoDB, Express, React.js, Node.js). You'll work hands-on across the stack, with a stronger emphasis on server-side architecture and API development, while collaborating closely with product, design, and engineering teammates. This role is ideal for a passionate, growth-minded engineer who thrives in an Agile environment, brings ideas to the table, and has the technical depth to contribute to platform evolution and system scalability. You'll work alongside, not for, other team members – contributing your ideas, code, and energy to shape solutions that drive business outcomes and customer satisfaction. ## Location This position will be located in Mexico City, Mexico. ## Reporting This position will report to the VP, Engineering. ## Responsibilities - Design and implement scalable client- and server-side solutions, with an emphasis on APIs, backend services, and database integration. - Write high-quality, testable, and maintainable code across the full stack. - Develop and maintain comprehensive unit, integration, and end-to-end tests. - Diagnose and troubleshoot production issues and propose robust solutions. - Participate in Agile ceremonies (planning, grooming, retrospectives) and contribute to meaningful story estimations. - Engage in architectural discussions, technical design reviews, and contribute to Palmetto's engineering standards. - Identify and advocate for opportunities to improve system performance, reliability, and developer productivity. - Partner cross-functionally with product managers, designers, and QA to deliver well-rounded user-centric solutions. - Actively participate in peer code reviews with a focus on knowledge sharing, mentorship, and maintaining high-quality code standards. - Collaborate openly with others to help cultivate a culture of learning, innovation, and continuous improvement. - Demonstrate an ownership mindset by anticipating future needs and contributing to long-term technical roadmap discussions. ## Requirements ### Minimum Qualifications - 5+ years of professional software engineering experience. - Strong proficiency in JavaScript (ES6+) and understanding of the JavaScript object model. - Proficiency with Node.js, Express, and experience designing/consuming RESTful APIs. - Experience building and maintaining Single Page Applications (SPAs) with React.js. - Hands-on experience working with NoSQL/document-based databases (e.g., MongoDB). - Solid understanding of core web fundamentals (HTML, CSS, security, performance). - Strong unit and integration testing discipline; TDD experience a plus. - Familiarity with CI/CD pipelines, code versioning (Git), and modern development workflows. - Excellent written and verbal communication skills. - Strong problem-solving skills, a continuous learner mentality, and a commitment to team success. ### Preferred Qualifications - Experience with Fastify, NestJS or ot
Sourced via wellfound · Listed on CareerPlan, which tracks 70,000+ jobs from 20+ sources.
Apply on Wellfound ↗