Sr. NodeJS React Developer - REMOTE within USA

LTM

$120K — $150K *
US-AnywhereRemote in Boston, MA
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 10+ years of software engineering experience; 3+ years in a senior/principal role.
  • Expertise in API design: REST, GraphQL, OpenAPI and related security and versioning protocols.
  • Strong background in integrations, especially with event-driven architectures and complex third-party APIs.
  • Proficient in full-stack development using modern frameworks and backend languages like Node.js, Python, or Java.
  • Familiar with cloud solutions (AWS, Azure, GCP) and tools for CI/CD and infrastructure management.
  • Solid understanding of data systems, both SQL and NoSQL, with experience in performance tuning.
  • Hands-on experience with modern AI development tools and their effective application in software projects.

Responsibilities

  • Lead the design and evolution of our API platform, treating APIs as products.
  • Own the entire integration process, ensuring smooth connectivity with external and internal systems.
  • Create and ship full-stack features, emphasizing backend integration solutions.
  • Establish and uphold technical standards for API design, testing, and security.
  • Mentor engineers through collaborative practices like code reviews and design discussions.
  • Collaborate with product security, platform, and data teams to align on technical roadmaps and architecture.
  • Utilize AI tools thoughtfully to enhance design and development workflows.

Benefits

  • Flexible work arrangements to ensure work-life balance.
  • Opportunities for professional development and training in new technologies.
  • Collaboration with a talented team of engineers and tech leads.
  • Access to the latest tools and technologies in software development.
  • A culture of innovation that encourages the adoption and exploration of AI-assisted development.
Full Job Description
Role description

  • We're looking for a Principal Software Engineer to own the systems that connect everything we do.
  • You'll spend most of your time designing APIs building integrations with third-party platforms and shaping the end-to-end experience on top of them.
  • This is a senior individual contributor role with real technical leadership scope.
  • You'll set technical direction mentor a small team and partner closely with product security and data.
  • AI assisted development is part of how we work. You'll be expected to use Claude Codex GitHub Copilot Claude Code and similar tools as force multipliers not curiosities

What You'll Do
  • Lead the API platform Design build and evolve our REST and GraphQL surface including webhooks and async event driven patterns Treat APIs as products with developer users not plumbing
  • Own integrations end-to-end Build and maintain connections with external systems vendors data providers and internal legacy platforms including contracts versioning observability retries and graceful failure
  • Ship full stack features across backend services data layer and modern web frontends with a strong bias toward the backend and integration tier
  • Set the technical standard for API design guidelines integration patterns testing strategy code review culture and threat modelling
  • Multiply the team by mentoring 36 engineers through pairing RFCs and design reviews Raise the bar without slowing people down
  • Partner across the organization with product security platform and data teams on roadmap SLAs and architecture decisions
  • Use AI tools thoughtfully across design exploration code generation refactoring review test generation and documentation Know where to trust them and where not to

Required Qualifications
  • 10 years of professional software engineering experience with at least 3 years in a senior or principal capacity
  • Deep API expertise REST and GraphQL, OpenAPI Swagger authentication patterns OAuth2 OIDC mTLS versioning rate limiting idempotency pagination and error semantics
  • Strong integration background event driven architectures message queues such as Kafka SQS RabbitMQ or similar webhooks ETLELT retries dead letter strategies and integrating with complex third-party APIs and legacy systems
  • Fullstack production experience with a modern frontend framework such as React, Nextjs with TypeScript or equivalent and a primary backend language such as Nodejs Python Java Go or C
  • Cloud native fluency with AWS Azure or GCP including container orchestration infrastructure as code such as Terraform or Pulumi and CICD pipelines
  • Solid data fundamentals including relational and NoSQL stores SQL fluency schema design query tuning and performance tuning
  • Handson fluent use of modern AI development tools such as Claude Codex GitHub Copilot Claude Code Cursor or similar You can speak concretely about what youve shipped with them how your workflow works and where youve learned not to trust them
  • Demonstrated technical leadership through mentoring engineers writing design documents driving crossteam decisions and influencing without formal authority

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