Senior / Principal Software Development Engineer

ELB Learning•American Fork, UT

8h•Remote

About The Position

We are seeking a highly experienced Senior / Principal Software Development Engineer to support a large-scale Healthcare Communication Training Platform built on a modern MERN-stack architecture hosted within AWS. This is a hands-on engineering and technical leadership role focused on platform stabilization, architectural improvement, feature development, and long-term scalability. The ideal candidate brings deep expertise across full-stack JavaScript development, cloud-native AWS environments, and modern application architecture, while also being comfortable operating within complex, fast-moving client environments. This individual will work closely with technical leadership, project management, QA, DevOps, and business stakeholders to drive both ongoing maintenance efforts and new platform enhancements. This engagement includes ownership across two major phases: Platform stabilization, code audits, defect remediation, and architectural assessment; New module development, workflow enhancements, reporting functionality, and platform modernization. The role requires a strong balance of hands-on coding ability, technical strategy, problem-solving, and cross-functional collaboration.

Requirements

10+ years of software development experience (15+ years preferred for Principal-level candidates)
Strong experience building and maintaining production-grade MERN stack applications
Expert-level proficiency in: ReactJS, Next.js, TypeScript, Node.js, Express.js, MongoDB Atlas & Mongoose ODM
Hands-on experience with AWS cloud services and distributed systems
Experience with CI/CD pipelines using Bitbucket Pipelines, GitHub Actions, GitLab CI, or similar
Experience designing scalable cloud-based architectures and troubleshooting production issues
Strong understanding of WCAG 2.1 AA accessibility implementation in React applications
Experience working in Agile/Scrum development environments
Proven ability to independently own major platform components and deliver on schedule
Strong written and verbal communication skills

Nice To Haves

Experience working within EdTech, Healthcare, LMS, or training platform environments
Familiarity with SCORM and xAPI standards
Experience with vendor-transition or platform onboarding engagements
Experience with AWS ECS/Fargate container deployments
Familiarity with: AWS Cognito, Lambda, SQS, DynamoDB, AWS CDK, SendGrid API
Experience supporting multi-environment AWS deployments and environment parity remediation
Prior technical leadership or mentoring experience strongly preferred

Responsibilities

Design, develop, test, and deploy scalable full-stack application features and enhancements
Conduct detailed audits of existing systems and provide actionable remediation recommendations
Lead development of new application modules from architecture through deployment
Diagnose and resolve complex platform defects, performance bottlenecks, and deployment issues
Maintain and extend AWS-based infrastructure and services including Cognito, Lambda, SQS, DynamoDB, ECS, and related workflows
Design and maintain RESTful APIs and backend services using Node.js and Express.js
Build and maintain accessible, responsive UI components aligned with WCAG 2.1 AA standards
Write and maintain unit, integration, and E2E tests using Playwright, Jest, or Mocha
Participate in sprint planning, backlog grooming, architecture discussions, and code reviews
Create and maintain technical documentation, architecture diagrams, and environment configuration documentation
Collaborate cross-functionally with Product, QA, DevOps, PMs, and stakeholders
Identify technical risks and proactively propose mitigation strategies
Mentor and support junior and mid-level engineers
Support technical onboarding, vendor transition, and platform modernization initiatives
Contribute to technical strategy, architecture evolution, and engineering best practices