Node.js Senior Engineer (TypeScript & AWS)

About the Position

Node.js Senior Engineer (TypeScript & AWS)

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and UI design, managed services, product development, and software development.

We are seeking a Senior Backend Engineer with strong experience in Node.js/TypeScript and AWS serverless to design, build, and operate the backend services of Optimus 4.0.

The main focus will be on IoT telemetry ingestion and time-series data processing, APIs consumed by frontend and mobile applications, and ensuring operability of services in production.

This role involves real ownership of critical components. Architectural decisions are made collaboratively with the Tech Lead and Solution Architect, with mandatory documentation (ADRs) in the repository. It is not a pure execution role - we expect technical judgment, initiative, and the ability to raise standards across the team.

Responsibilities

• Design and implement APIs and serverless services in Node.js/TypeScript on AWS Lambda.
• Define and maintain event-driven architectures for IoT telemetry ingestion.
• Optimize Aurora PostgreSQL data models and manage time-series data efficiently.
• Implement observability end-to-end with actionable alarms, logs, metrics, and traces.
• Ensure security best practices: IAM least-privilege, secrets management, encryption.
• Build and maintain CI/CD pipelines with GitHub Actions and manage private npm packages with AWS CodeArtifact.
• Mentor engineers, elevate coding standards, and drive platform improvements.
• Manage operational risks: concurrency, cold starts, service limits, capacity planning.

Requirements

• Solid experience in backend development with Node.js/TypeScript, designing REST APIs and/or event-driven architectures.
• Proven expertise in AWS serverless: Lambda, IAM, VPC, CloudWatch, and at least two integration services (API Gateway, SQS/SNS, EventBridge, Kinesis, Step Functions).
• Strong knowledge of PostgreSQL and hands-on experience with Amazon Aurora PostgreSQL (modeling, indexing, performance, transactions, troubleshooting).
• Experience with high-frequency time-series data: ingestion, window queries, aggregations, retention policies.
• Daily use of GitHub: PRs, code reviews, branching strategies, CI/CD pipelines.
• Good practices in testing (unit/integration), observability, and security (secrets management, OWASP, authentication/authorization).
• Technical English for documentation, specifications, and code comments.

Nice to Have

• Experience with AWS IoT Core (MQTT), Device Shadows, Rules Engine.
• Production experience with TimescaleDB (hypertables, query optimization, cost control).
• Familiarity with AWS CodeArtifact, AWS CDK, and Lambda Powertools for TypeScript.
• Experience with monorepos (Turborepo, NX) and package managers like pnpm.
• Knowledge of OpenTelemetry/X-Ray, SRE practices (SLOs, error budgets, postmortems).
• Hybrid experience with containers (Docker, ECS).
• Industrial/IoT context: SCADA, MES, sensors, industrial protocols.

We Offer

• A long-term project with real ownership of mission-critical components.
• A collaborative environment where architecture decisions are shared and documented.
• Opportunities to grow expertise in IoT, serverless-first architectures, and time-series data processing.
• A culture that values innovation, teamwork, and continuous improvement.

About the Company

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic.

Application Process

1. APPLICATION: Send us your application, we are ready to hear your story and explore how we can grow together.
2. REVIEW: Our team carefully reviews every application with curiosity and care.
3. TALENT ACQUISITION INTERVIEW: You will meet our Talent team to talk about your goals and learn more about who we are, what we offer, and how we support our people.
4. TECHNICAL INTERVIEW: Our tech interview is all about diving deeper into your expertise and understanding your strengths, how you solve problems, and how you think – no trick questions, just a meaningful conversation.
5. CUSTOMER INTERVIEW: For some roles, especially when our clients are closely involved, you might also have a conversation with them – it’s a chance for everyone to align and get to know each other better.
6. JOB OFFER: If we both feel it’s the right match, we will send you an offer to join us. And even if it’s not the time just yet, you’ll always hear back from us.
7. WELCOME!: Your new team is excited to meet you, support you, and build something great together. Let’s make your first day the start of a journey that shapes a career that matters.

Locations

• Buenos Aires, AR
• Córdoba, AR

Remote Status

• Fully Remote