The Role
Build and maintain scalable backend services in Java or Kotlin using DDD. Modernize and refactor legacy systems, implement robust testing strategies, participate in mentoring code reviews, and work with messaging, databases, search, and AWS infrastructure to support a large cross-border marketplace.
Summary Generated by Built In
Barcelona, Full-time, Hybrid
Fledge
🎯 Company summary
✅ In this role, you will:
✅ For this job, you must:
📩 How to Apply
🌈 Diversity, Equity, Inclusion, and Belonging
ℹ️ Important
Fledge
We are a boutique search firm connecting exceptional Talent with the most innovative companies and products that positively impact our societies. We present a tailor-made solution between fine consulting and flexible Talent search process outsourcing:
- Fractional Talent Acquisition Advisory
- Recruitment operation tooling
- On-demand Talent Search
Our client is a high-growth European tech scale-up on a mission to redefine how the world consumes. They believe in a collaborative economy where smart technology makes sustainable, second-hand trade the global norm.
Operating as a major cross-border marketplace in Spain, Italy, and Portugal, they manage a massive ecosystem with hundreds of millions of products. Their goal is to blend the trust of traditional classifieds with the seamless convenience of a modern marketplace.
- You’ll spend your time writing and maintaining clean, scalable code in Java or Kotlin, depending on where your team’s focus lies.
- You won’t just "code to spec", you’ll use Domain-Driven Design to build features that actually map to the real-world problems we're solving.
- You’ll help us modernize and refactor legacy parts of our system, ensuring everything stays healthy and performant as we grow.
- You’ll help raise the bar for the whole team by creating solid testing strategies and participating in a code review culture that’s about mentorship, not just nitpicking.
- Master our stack:
- Kotlin & Java
- Spring Boot & Ktor
- Kafka & RabbitMQ
- MySql, DynamoDB, Redis & RedShift
- Docker
- Solr & ElasticSearch
- AWS: S3, ECS, RDS, Lambdas, CloudWatch, MSK, SES, CloudFront & more
- You enjoy digging into complex technical puzzles and finding the most elegant way to solve them.
- You have a quality-first mindset, but you’re also pragmatic—you know how to balance perfect code with the need to deliver real value to our users.
- You’re someone who genuinely loves to learn and share what you know. We’re a dynamic team, and we’re looking for someone who wants to grow right alongside us.
If you are excited about this opportunity and believe you are a great fit for the role, please send your resume and a note outlining your experience and what motivates you to join a European tech scale-up.
We are committed to enabling everyone to feel included and valued, and we trust our partners to do the same. We believe both the company and its culture are strongest when composed of diverse experiences and backgrounds.
All qualified applicants will receive consideration for employment without regard to age, color, family, gender identity, marital status, national origin, physical or mental disability, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws.
If you have a medical condition or an individual need for an adjustment to our process, and you believe this may affect your ability to be at your best, please let us know so we can discuss how we can best support you and make any necessary adjustments.
In case of any doubts or questions, please contact - [email protected]
Skills Required
- Kotlin
- Java
- Spring Boot
- Ktor
- Kafka
- RabbitMQ
- MySQL
- DynamoDB
- Redis
- RedShift
- Docker
- Solr
- ElasticSearch
- AWS S3
- AWS ECS
- AWS RDS
- AWS Lambda
- AWS CloudWatch
- AWS MSK
- AWS SES
- AWS CloudFront
- Domain-Driven Design experience
- Experience modernizing and refactoring legacy systems
- Strong testing strategies and quality-first mindset
- Participation in code reviews and mentorship
- Enjoy solving complex technical puzzles
- Willingness to learn and share knowledge
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The Company
What We Do
Fledge is the conscious company accelerator, focused on mission-driven for-profit startups addressing the most important problems of the world: poverty, hunger, unemployment, communities, and the environment.
