HQ - Senior Backend Engineer (Kotlin) - EMEA Remote

We're looking for a Senior Kotlin Engineer to join our HQ Tech team and help design and scale the systems that power our platform. You'll work in one of our product teams, building the backend foundations for real-world staffing solutions used by thousands of businesses and hundreds of thousands of workers daily. This is a fully remote position within the CET ±1 time zone.Responsibilities:

• Design and implement scalable services that power Job&Talent's staffing and workforce management platform.
• Collaborate with cross-functional product teams to deliver new features across our backend systems..
• Lead the development of critical components and drive architectural discussions.
• Mentor engineers and advocate for best practices in Kotlin development, testing, and observability.
• Continuously optimize performance, reliability, and scalability across our systems.
• Take part in end-to-end ownership - from design to deployment and monitoring in production.

• 5+ years of experience in backend development using Kotlin or Java.
• Strong experience building and maintaining distributed systems at scale (1M+ users)
• Proven track record delivering customer-facing applications.
• Experience owning the full lifecycle of a feature: design, coding, testing, deployment, and monitoring.
• Solid understanding of relational databases, transactions, and query optimization.
• Hands-on experience with monitoring systems - each team owns their product in production.
• A pragmatic problem-solver who enjoys tackling complex technical challenges.

Nice if you also have...

• Experience with event streaming, such as Kafka
• Experience with Docker, Kubernetes, and AWS
• Experience with git and the GitHub workflow, which we use extensively at Job&Talent
• Knowledge of Linux servers and No-SQL experience (Redis)

About usJob&Talent is a world-leading, AI-powered workforce management platform for frontline industries. We help companies boost productivity and efficiency at scale, while giving workers the tools they need to thrive. Our mission is simple: to empower the people who make the world go round. Built on deep industry expertise, cutting-edge technology, and smart AI agents, our end-to-end platform covers the entire workforce lifecycle - from recruitment and planning to time and attendance, performance, cost management, and communication. It delivers measurable improvements in the areas that matter most: fulfilment, attendance, retention, and workforce quality. Our platform strength is rooted in unique experience: placing millions of workers over the years and serving thousands of blue-chip clients across delivery, logistics, manufacturing, e-commerce, retail, and hospitality. Headquartered in Madrid, the company operates in 10 countries across Europe, the US, and Latin America and is backed by leading investors including Atomico, Goldman Sachs, Kinnevik, BlackRock, and SoftBank. Join our community and make an impact Innovation, high standards, and analytical thinking are in our DNA. Everyone has a voice here, and that voice matters. It's how we stay sharp, move fast, and make decisions that keep us ahead of the curve. You'll take full ownership of your work, collaborate across borders, and grow by doing. Around here, you'll hear a lot about 10x experiences, human-centered design, and the power of AI. But what truly sets us apart is our people: Our diverse team brings unique perspectives, deep commitment and real-world experience to the table. We champion empathy, honesty, and inclusion. Because when people can be their authentic selves, incredible things happen-for our workers, our clients, and for each other. And we reward that impact-with competitive pay, meaningful benefits, and the opportunity to shape what work looks like for millions around the globe. If you're ready to make a real impact at scale, you're in the right place. Proud to champion equalityAt Job&Talent we value diversity and we're an Equal Opportunity Employer. We welcome applications from all suitably qualified people regardless of national origin, race, disability, religious beliefs or sexual orientation. Come join us. We look forward to your application.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us. Remoto