Senior Node.js Back-End Developer

MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.

Here’s what you can expect when you join MWDN:

• Security: We carefully vet our clients to minimize risks and ensure reliability and timely payments - no fraud or unpleasant surprises.
• Career support: If a project isn’t the right fit, we support you and actively help find new opportunities that match your skills and career goals.
• Legal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.
• Professional development: We offer English courses and professional growth opportunities, as well as team-building events.

Why choose us? MWDN is ranked among the top 5 IT employers in our region according to DOU. We take pride in our transparency and strong commitment to our team. Curious to learn more? See what our employees say about working with us on DOU.

This AI‑driven, evidence‑based peer support platform enables health plans, self‑insured employers, and government agencies to address the serious impact of loneliness and social isolation on health outcomes, costs, and engagement rates. The platform uses a unique approach to build tailored social support networks that adapt over time and respond to improvements in users’ social and mental well‑being.

The mission is clear: to help overcome the Loneliness Epidemic.

This AI‑driven, evidence‑based peer support platform enables health plans, self‑insured employers, and government agencies to address the serious impact of loneliness and social isolation on health outcomes, costs, and engagement rates. The platform uses a unique approach to build tailored social support networks that adapt over time and respond to improvements in users’ social and mental well‑being.

The mission is clear: to help overcome the Loneliness Epidemic.

An established digital platform is looking for an experienced Senior Backend Developer to join a dynamic and highly collaborative team. In this role, you will help design, develop, and maintain the backend infrastructure that powers the platform, ensuring it is secure, scalable, and optimized for user experience.

The ideal candidate is mission‑driven, passionate about high‑quality engineering, excited about the intersection of data and digital health, and comfortable working in a fast‑paced environment with both local and international teams.

• 7+ years of experience as a backend developer, with strong skills in Node.js and TypeScript
• 3+ years working with MongoDB
• Deep understanding of RESTful API design and Express.js
• Strong proficiency in modern JavaScript (ES6+)
• Solid understanding of production environments and debugging
• Expertise in performance optimization and scalable architecture
• Knowledge of software engineering principles (SOLID, design patterns, OOP/FP, TDD)
• Familiarity with the Node.js ecosystem (package managers, linters, best practices)
• Excellent communication skills, team mindset, and empathy
• Ability to work with US-based teams and across time zones
• Understanding of service-oriented and event-driven architecture

Nice to Have

• Management or mentorship experience
• Experience with system architecture and modern frameworks
• Knowledge of IT systems, cybersecurity, DevOps, or compliance
• Bachelor’s degree in Computer Science or equivalent

• Design, implement, and maintain scalable backend services
• Build RESTful APIs using Node.js, TypeScript, and Express.js
• Work with MongoDB databases and AWS services (ECS, SQS, EventBridge, Lambda, CloudWatch, SSM)
• Diagnose and resolve technical and production issues
• Identify and analyze performance bottlenecks
• Collaborate with cross-functional and cross-timezone teams
• Ensure system security, reliability, and best-practice architecture
• Carry requirements from early concept to full implementation

• People-first management with minimal bureaucracy
• A friendly company culture, proven by employees who choose to return
• Flexible working hours
• 29 days of PTO (18 working days per year pluse all national holidays)
• 10 paid recovery days
• Full financial and legal support for independent contractors
• Free English classes, with native speakers or Ukrainian teachers
• Dedicated HR support

✅ Intro call with a Recruiter — ✅ Interview with R&D Manager — ✅ Home Assignment — ✅ Technical interview based on completed assignment — ✅ Interview with System Architect — ✅ Interview with CPO — ✅ Offer