Senior Software Engineer - Distributed Search and AI Systems

Company Description

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 1,300 customersto provide better digital experiences to more than 18 million employees. Dual headquartered in Lausanne, Switzerland and Boston, Massachusetts, Nexthink has 9 offices worldwide.

Job Description

We are looking for a skilled Engineer, preferably with Java experience and strong interest or expertise in Search technologies and AI-driven systems, with a strong desire to learn and innovate – you help challenge the status quo and are eager to develop new skills to help Nexthink stay on the leading edge of digital employee experience. The candidate shall be motivated by both the product and the technology stack and able to produce scalable software solutions in an agile environment.

We value strong technical knowledge, curiosity, and hands-on experience with modern search and AI systems more than seniority alone.

If you are motivated, result-driven, and detail-oriented, you have a sense of product ownership, and you constantly learn and are willing to collaborate with others, we would like to know you.

This is a once-in-a-lifetime opportunity to be part of an extremely dynamic, Silicon Valley-like unicorn company. We look forward to meeting you!

You will work on designing, building, and delivering resilient and scalable distributed services that process billions of events using modern cloud-native features and techniques. These services power our search capabilities and support AI-driven use cases across the organization. Your expertise will contribute to the reliability, relevance, and efficiency of our platforms, influencing both our product and engineering DevOps practices in ensuring high system availability, scalability, performance, and search quality.

Responsibilities

• Implement, test, deliver, and maintain Nexthink’s data importing, exporting, and search capabilities.
• Contribute to the evolution of the search platform, improving relevance, scalability, and support for semantic and vector-based search use cases.
• Collaborate proactively with Product Management and other Engineering stakeholders to maintain a high quality bar in a fast-paced, iterative environment.
• Advocate for improvements across product, security, quality, performance, and search efficiency.
• Write clean, maintainable code that follows established style guidelines and best practices.
• Maintain and promote these standards through thorough code reviews.
• Identify inefficiencies and technical debt within the team, proposing and implementing solutions.
• Deliver new features and continuous improvements.

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• Support and resolve L3 support requests together with the rest of the team.
• Work with an agile, iterative, and incremental mindset, actively participating in ceremonies and team processes.
  
  

Qualifications

• Experience in backend development (Java preferred) within SaaS or similar environments.
• Experience or strong interest in search technologies such as OpenSearch or Elasticsearch, or AI-powered systems.
• Strong understanding of search concepts including indexing, relevance, ranking, analyzers, and performance tuning.
• Familiarity with vector databases, vector search, embeddings, hybrid search, or semantic search concepts is a strong plus.
• Exposure to Retrieval-Augmented Generation (RAG) architectures or integrating search systems with LLM-based applications is highly valued.
• Experience working with microservices frameworks (Micronaut is a plus).
• Strong communication and teamwork skills.
• Self-motivated with good organizational abilities.
• Positive, solution-oriented mindset.
• Professional-level spoken and written English.
  
  

Additional Information

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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 1000 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.

If you are looking for a change and like a nice atmosphere, lots of challenges, and having fun while working, this is a great opportunity for you!Check what we offer:

• 💼 Permanent Contract and a competitive compensation package.
• 📍 Amazing centrally located offices near the Bernabeu Stadium.
• 🩺 Private Health Insurance (Sanitas) and daily meal vouchers of 11 EURwill be entirely covered by us.
• 🏡 Hybrid work model balancing office and remote work, with a structured approach for new hires to foster connections and onboarding.
• 🏖️ Flexible Hours and unlimited vacation (employees have unlimited paid time off on top of the 23 days of holidays we offer)plus 3 company-paid volunteer days.
• 🤸 Up to 25 EUR per month for a gym subscription.
• 🛴 Flexible compensation plan for childcare & public transportation.
• 🧑‍🏫 Reimbursement of up to 50% of the cost of English & Spanish classes.
• 🍉 Fresh fruit, cookies,soft drinks and protein shakes at the offie.
• 🍕Regular company and team events like Pizza talks, Team Building activities, Christmas parties, hosting Meetups at the office and more!
• 📣 Bonuses for referring successful hires after three months of continuous employment.
• 🚚 We offer a relocation package to people who are coming from another country.
  
  

Please note that not all the benefits listed above are available for temporary, contract, and internship roles. To ensure you have the most up-to-date information, we recommend checking with your Recruitment Partner.