Senior Backend Software Engineer (Go, Node.js)

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.

Domain: AI Infrastructure / Real-Time Data Processing

Client Location: Israel

Company size: 10 - 51

A fast-growing product company building next-generation infrastructure for production AI systems. The team is focused on high-performance, low-latency distributed technologies that operate directly within real-time data flows and AI workloads. The product addresses complex engineering challenges related to runtime reliability, distributed processing, networking, observability, and large-scale system performance.

A cutting-edge company building deterministic, low-latency real-time data infrastructure for production-grade AI systems. The platform enables scalable and reliable data pipelines designed to power mission-critical AI workloads.

Now they are building a cloud-native SaaS platform that manages and orchestrates software components running inside customer environments. This is a backend role with responsibility across:

• the SaaS control plane
• the site control plane (main agent running on customer environments)
• source agents operating close to customer data paths

• 8+ years of professional software development experience
• Strong backend experience with Node.js (TypeScript, NestJS)
• At least 3 years of experience with Go (Golang)
• Experience with gRPC or similar RPC frameworks
• Proven experience building production-grade backend systems
• Strong understanding of distributed systems, including failure modes and tradeoffs
• Experience with cloud-native architectures and Kubernetes
• Experience with AWS or another major cloud provider
• Experience with SQL databases (PostgreSQL or similar)
• Experience with event-driven systems (Kafka, RabbitMQ, or similar)
• Strong understanding of security fundamentals (authentication, TLS, encryption)
• Hands-on experience with observability in production systems, including metrics, logs, and traces
• Ability to design systems that are observable by default and to debug distributed systems using observability data
• Excellent debugging skills and strong production ownership
• Ability to work independently in an early-stage environment
• At least an Upper-Intermediate level of English

Nice to Have

• Experience building agent-based or customer-deployed software
• Familiarity with frontend technologies (React, modern SPAs)
• Experience with observability tools such as Prometheus, Grafana, OpenTelemetry, Tempo, Mimir, or ClickHouse
• Background in platform, infrastructure, or control-plane systems
• Experience with Nx monorepos or large TypeScript codebases 

• Design and build backend services for a multi-tenant SaaS platform
• Design and implement customer-deployed agents (site control plane and source agents)
• Develop systems using Node.js (TypeScript, NestJS) and Go
• Design APIs, service boundaries, and communication protocols between cloud and on-site components
• Implement secure authentication, authorization, and policy enforcement
• Build asynchronous and event-driven workflows across cloud and on-prem environments
• Ensure systems are observable by design, with meaningful metrics, logs, and traces
• Own components end-to-end: design, implementation, deployment, monitoring, and reliability
• Participate in architecture decisions across SaaS and agent layers
• Debug and resolve production issues in distributed and hybrid systems

• 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 — ✅ Technical Interview — ✅ Interview with CTO — ✅ Culture fit with CEO— ✅ Offer