Description
HQ - Senior Backend Engineer (Kotlin) - EMEA Remote
Team: Engineering
Location: Madrid HQ, ES
Commitment: Permanent
Workplace Type: remote
Join us to shape the future of work: your next adventure awaits!
The position
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.
Requirements
- 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)
#LI-OK1
About us
Job&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 equality
At 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.
There are more than 50,000 engineering jobs:
Subscribe to membership and unlock all jobs
Engineering Jobs
60,000+ jobs from 4,500+ well-funded companies
Updated Daily
New jobs are added every day as companies post them
Refined Search
Use filters like skill, location, etc to narrow results
Become a member
🥳🥳🥳 452 happy customers and counting...
Overall, over 80% of customers chose to renew their subscriptions after the initial sign-up.
To try it out
For active job seekers
For those who are passive looking
Cancel anytime
Frequently Asked Questions
- We prioritize job seekers as our customers, unlike bigger job sites, by charging a small fee to provide them with curated access to the best companies and up-to-date jobs. This focus allows us to deliver a more personalized and effective job search experience.
- We've got over 200,000 jobs from 15,000+ vetted companies. No fake or sleazy jobs here!
- We aggregate jobs from 15,000+ companies' career pages, so you can be sure that you're getting the most up-to-date and relevant jobs.
- We're the only job board *for* software engineers, *by* software engineers… in case you needed a reminder! We add thousands of new jobs daily and offer powerful search filters just for you. 🛠️
- Every single hour! We add 2,000-3,000 new jobs daily, so you'll always have fresh opportunities. 🚀
- Typically, job searches take 3-6 months. EchoJobs helps you spend more time applying and less time hunting. 🎯
- Check daily! We're always updating with new jobs. Set up job alerts for even quicker access. 📅
What Fellow Engineers Say