Jobs Node.js

About the Role

We're looking for a hands-on Senior Backend Engineer / Tech Lead to own core backend development on the Backslash platform. This is a high-ownership role — you'll drive architectural decisions, implement customer-facing features, and keep systems performant and secure at scale. The right person is analytical, self-sufficient, and comfortable working end-to-end with minimal hand-holding.

Key Responsibilities

• Take full ownership of backend development in Node.js and TypeScript
• Lead architectural improvements and simplification of existing systems
• Implement and deliver customer feature requests end-to-end
• Ensure high performance — memory optimization, throughput, and scalability
• Maintain strong application security practices (AppSec) across the codebase
• Participate in an on-call rotation (week-by-week basis)
• Guide technical decisions and mentor team members as a Tech Lead
• Collaborate cross-functionally with product, security research, and customer teams

Requirements

• 6+ years of backend development experience
• Deep expertise in Node.js and TypeScript
• Experience in or readiness to step into a Tech Lead role
• Strong analytical and problem-solving skills — a must
• Solid understanding of application security (AppSec) principles and practices
• Hands-on experience with memory optimization and performance tuning
• Able to work independently, own tasks from spec to production
• English B2+ — clear written and verbal communication

Nice to Have

• Experience in an AppSec-focused product environment — significant advantage
• Familiarity with security packages and vulnerability management tooling (e.g. npm audit, Snyk, OSV, SAST/SCA concepts)
• Background in customer-facing or feature-driven development
• Exposure to code analysis, static analysis, or software supply chain security concepts

About us:
 

BetterMe — a global wellness ecosystem empowering millions to become better — physically, mentally, and emotionally. We build what makes people better and keep challenging ourselves to inspire others.
 

Your impact:

• Develop clean, maintainable, and well-tested backend solutions using Node.js.
• Design technical solutions based on product requirements and participate in architecture discussions.
• Proactively identify and drive system improvements (performance, scalability, reliability).
• Work with distributed systems (databases, messaging, caching).
• Leverage AI tools to improve development efficiency and code quality.
• Drive product-oriented thinking by contributing to delivery of impactful user-facing features.
   

About you:

• 2+ years of experience with Node.js in production environments.
• Strong proficiency in TypeScript.
• Hands-on experience with NestJS.
• Solid experience with relational databases (preferably PostgreSQL or MySQL).
• Experience working with Redis or other caching solutions.
• Understanding of message brokers (e.g., RabbitMQ or similar).
• Experience writing tests (unit/integration).
• Hands-on experience with cloud environments (AWS or similar).
• Familiarity with containerization and orchestration (e.g., Kubernetes).
• Understanding of DevOps practices and CI/CD pipelines (e.g., GitHub Actions).
• Familiarity with observability practices and tools (e.g., Elastic Stack, OpenTelemetry, Sentry).
• Ability to collaborate effectively within a cross-functional team.
   

Will be a plus:

• Experience with performance optimization and scalability in high-load systems.
   

What you get at BetterMe: 

A mission that inspires. Every line of code, every design, every idea helps millions of people become healthier and more confident.
Trust without micromanagement. You manage your time and make decisions independently. We value outcomes, not online hours.
Growth opportunities. 90% of our leads have grown within the company. There’s space for initiative, new responsibilities, and real career upgrades.
Flexible work format. Choose what works best for you — office, remote, or hybrid.
Wellness in practice. Offline: workouts with professional trainers in our corporate gym, massage, corporate lunches, sports, and team activities — everything you need to recharge and reset together. Online: regular online workouts, partner discounts, and free access to our products.
Health insurance & corporate doctor.
Open communication. Transparency across teams, honest feedback, and support for initiatives are part of our everyday culture.
Support for sports events. We cover entry fees and encourage the team to compete and participate together.
Modern equipment. We provide new hardware and everything you need for productive work.
Legal & finance support. Experienced lawyers and financial specialists are always there to help — from documents to personal consultations.