Senior Backend Engineer ​/ Technical Lead

Senior Backend Engineer / Technical Lead

• Full-time

Nexthink is the leader in digital employee experience management software. The company provides IT leaders with unprecedented insight allowing them to see, diagnose and fix issues at scale impacting employees anywhere, with any application or network, before employees notice the issue. As the first solution to allow IT to progress from reactive problem solving to proactive optimization, Nexthink enables its more than 1,500 customers to provide better digital experiences to more than 25+ million employees.

Dual headquartered in Lausanne, Switzerland and Boston, Massachusetts, Nexthink has 9 offices worldwide.

We are looking for an experienced Senior Backend Engineer / Tech Lead to design and build scalable, reliable, and high-performance backend systems for Nexthink Assist, our AI-native product. You'll integrate new capabilities into Assist and customize and enhance the workspace experience that sits at the center of it.

You will develop core services and infrastructure supporting large-scale data processing, real-time interactions, and integrations across multiple systems. This is a highly collaborative role requiring clear communication, strong technical judgment, and the ability to work effectively across teams.

You will own significant backend components end to end, set technical direction, and navigate cross-team decisions and disagreements with minimal oversight.

Responsibilities

Design, build, and scale distributed backend systems that serve millions of users.

Drive end-to-end delivery of features: from design, implementation, deployment, and monitoring.

Architect real-time, low-latency APIs and backend services for AI-driven conversational systems within Assist.

Develop cloud-native services in Java, ensuring reliability, performance, and scalability.

Work on infrastructure components, including AWS-based deployments, containerization (Docker), and orchestration (Kubernetes/ECS).

Build robust APIs and backend services that power AI-driven products and real-time interactions.

Ensure resiliency, fault tolerance, and compliance in high-throughput environments.

Collaborate with product managers, infrastructure engineers, and other teams to deliver production-ready systems.

Contribute to technical discussions, share knowledge, and help evolve best practices in backend and infra engineering.

8+ years of professional backend engineering experience.

Proven experience designing and scaling backend systems for millions of users or high-throughput real-time services.

Solid understanding of cloud-native architectures (AWS or similar), containerization (Docker), and orchestration (Kubernetes/ECS).

Experience with distributed data systems (e.g., Redis, Apache Kafka).

Exposure to LLM integration (prompting, evaluation, observability).

Strong background in high availability systems, failover, and resiliency design.

Curious mindset with an eagerness to learn and adapt.

Excellent knowledge of observability practices: logging, monitoring, tracing, metrics.

Strong communication skills in English, able to explain complex technical topics clearly.

Nice to have

Java frameworks knowledge (Micronaut, Spring).

Performance tuning and scaling experience in high-throughput environments.

Familiarity with Git Ops, CI/CD, IaC.

We are the pioneers and trailblazers of a global IT Market Category (DEX) that is shaping the future of how the world works, giving our customers’ IT Teams total digital visibility across their enterprise. Our innovative solutions integrate real-time analytics, automation, and employee feedback across all endpoints. This enables our IT teams to solve complex technical challenges, create ever more productive workplaces, and deliver happy, satisfied employees in the digital workplace.

With over 1200 employees across 5 continents, Nexthink operates as One Team, connecting, collaborating and innovating to continuously grow. We call our employees ‘Nexthinkers’ and our commitment to diversity, inclusion, and equity is second to none. We currently have over 75 nationalities working with us, from all cultures and backgrounds, speaking many different languages.

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