[Hiring] NodeJS Engineer @3Pillar

Role Description

Accomplished Tech Visionary: Elevate your expertise to new heights at 3Pillar, the premier destination for trailblazing senior software engineers like yourself. Picture collaborating with industry leaders, spearheading transformative projects that redefine urban living, establishing new media channels for enterprise companies, or driving innovation in healthcare. Our mission is to revolutionize the tech landscape, and your skills are integral to achieving this ambitious goal.

Your role extends beyond the realm of code composition; you will architect transformative solutions that reshape entire industries. Join us and spearhead the charge toward a tech future that transcends the ordinary.

Key Responsibilities

• Design, build, and maintain scalable AWS Lambda functions across the ecoATM accounts platform — covering authentication (Cognito), user profiles, orders, newsletters, and third-party integrations.
• Develop and operate containerized, event-driven communication systems supporting SMS/email workflows, webhooks, subscriptions, and scheduled campaigns (Twilio, SendGrid, Iterable, SNS, Fargate).
• Extend and maintain the serverless payment engine managing the full transaction lifecycle, including webhook processing, DynamoDB stream publishing, and multi-provider payment flows (PayPal, Venmo, gift cards).
• Build and evolve APIs and microservices using Node.js, GraphQL, and RESTful patterns; persist data in DynamoDB, MySQL, and Opensearch.
• Implement operational services — address verification, shipping label generation (S3), promo-code management (Voucherify) — that support internal workflows at scale.
• Manage and improve the Lerna-based monorepo architecture to maximize code reuse, dependency hygiene, and deployment consistency across Lambda services.
• Write comprehensive unit and integration tests using Vitest (mocks, spies, coverage), upholding CI/CD quality gates.
• Facilitate effective communication with client stakeholders regarding project status, technical trade-offs, and recommendations.
• Participate actively in Agile ceremonies — daily stand-ups, sprint planning, retrospectives — and contribute to engineering community initiatives (CoPs, mentoring).
• Leverage AI-assisted development tooling (Cursor, GitHub Copilot) to accelerate feature delivery and maintain high code quality.

Qualifications

• 5–7+ years of professional experience as an active participant on an Agile development team.
• Expert command of JavaScript / TypeScript (ES6+), Node.js, and modern async patterns.
• Expert experience building and operating AWS serverless applications: Lambda, API Gateway, DynamoDB, SNS, SQS, ECS/Fargate, S3, Cognito.
• Advanced experience with GraphQL schema design, resolvers, and REST-based web services.
• Advanced experience with relational databases (MySQL) and document/search stores (DynamoDB, Opensearch).
• Advanced experience with event-driven and microservice architectures targeting high availability and throughput.
• Advanced experience writing unit and integration tests; strong command of Vitest or equivalent frameworks (mocks, spies, coverage reporting).
• Working experience with Lerna or similar monorepo tooling for multi-package Lambda projects.
• Demonstrated ability to work on complex enterprise systems or successfully deliver a greenfield product.
• Ability to translate business requirements into technical requirements and communicate trade-offs clearly.

Additional Experience Desired

• Hands-on experience with third-party integrations: Twilio, SendGrid, Iterable, Shopify, or payment processors (PayPal, Venmo).
• Experience with promo/coupon engine integrations (Voucherify or similar).
• Experience with Docker, containerized ECS deployments, and CI/CD pipelines (GitHub Actions or similar).
• Familiarity with AI-assisted coding workflows (Cursor, GitHub Copilot, or equivalent).
• You're passionate about software development — it's not just your career, it's your hobby too.
• You're constantly striving to learn new things and stay current with emerging cloud and serverless patterns.

Benefits

• Flexible work environment – whether it's the office, your home, or a blend of both.
• Part of a global team, learning from top talent around the world and across cultures.
• Focus on well-being with fitness offerings, mental health plans, and generous time off.
• Professional services model enables career growth and development opportunities across projects, offerings, and industries.
• Commitment to diversity and values like Intrinsic Dignity and Open Collaboration.