Senior JavaScript Engineer (Backend/Node.js)

• *About Us**

Josonseth Digital Consulting (JDC) is a technology delivery and talent advisory firm providing high-quality engineering, product, and data capability to consulting firms, scale-ups and enterprise teams.

• *Join our Talent Community!**

We are in a phase of exciting growth and are looking to connect with talented Senior JavaScript Engineers (Backend / Node.js) for future openings. If you are passionate about designing, developing, and optimizing scalable backend services and APIs powering mission-critical applications, and want to join our talent pool, please submit your resume.

• *Overview**

We are looking for a highly skilled Senior JavaScript Engineer with strong backend expertise in Node.js to join our engineering team. You will design, develop, and optimize scalable backend services and APIs powering mission-critical applications. The ideal candidate is experienced in distributed systems, cloud architecture, and modern JavaScript tooling, with a strong emphasis on performance, reliability, and security.

• *Key Responsibilities
• Architect, build, and maintain scalable backend services using Node.js and modern frameworks.
• Design and implement RESTful and/or GraphQL APIs with clean, maintainable code.
• Optimize backend performance, reliability, logging, and observability.
• Collaborate with frontend, DevOps, product, and data teams to deliver complete solutions.
• Write and maintain technical documentation, perform code reviews, and enforce coding standards.
• Manage deployments, CI/CD pipelines, and cloud resources as needed.
• Mentor junior engineers and drive backend engineering best practices.
• Participate in architectural discussions and contribute to long-term system strategy.
• *Required Qualifications
• 7+ years of professional experience building backend systems with JavaScript or TypeScript.
• Advanced expertise in Node.js, asynchronous programming, and event-driven architecture.
• Experience with Express.js, Fastify, NestJS, or similar backend frameworks.
• Strong understanding of databases (PostgreSQL, MySQL, MongoDB, Redis, etc.).
• Experience with message queues and event-driven patterns (Kafka, RabbitMQ, SQS, etc.).
• Knowledge of containerization and orchestration (Docker, Kubernetes, ECS).
• Solid understanding of authentication/authorization patterns (OAuth2, JWT, RBAC).
• Experience with distributed systems, microservices, and API versioning.
• *Preferred Qualifications
• Experience with TypeScript at scale.
• Hands-on knowledge of cloud platforms (AWS, GCP, or Azure).
• Experience with serverless technologies (AWS Lambda, Cloud Functions).
• Familiarity with monitoring tools like Prometheus, Grafana, Datadog, or OpenTelemetry.
• Background in high-throughput or low-latency systems.
• Experience implementing automated testing using Jest, Mocha, or similar frameworks.
• *Soft Skills
• Excellent problem-solving and debugging skills.
• Strong communication and cross-functional collaboration abilities.
• Leadership mindset and ability to influence technical decisions.
• High ownership, accountability, and attention to detail.
• Ability to thrive in fast-paced and evolving environments.