Senior Backend Developer

Nameless Ventures; Portugal; Hybrid; EUR 60,000 - 90,000; Full time

Job summary

Nameless Ventures is seeking a backend engineer to shape large-scale financial systems from day one. You will build and maintain robust microservices using Java/Kotlin and Go, focusing on secure, reliable payments and settlements.

Join a distributed, event-driven environment with Quarkus and Kafka, emphasizing monitoring and security. Remote work across Portugal or hybrid in Porto comes with a competitive package and benefits.

Qualifications

• Experience with Java or Kotlin on large-scale systems.
• Strong understanding of distributed systems and Kafka.
• Experience managing live systems with monitoring and deployments.
• Security best practices in data protection and access management.
• At least 1 year of hands-on experience using AI tools and automations.
• Fintech experience is a plus.

Responsibilities

• Develop and maintain robust backend systems for secure payments and settlements.
• Integrate payment capabilities across platforms, including mobile money and card networks.
• Build and optimize distributed services in a microservices, event-driven environment.
• Improve reliability and performance through testing, observability, and monitoring.

Skills

Java

Kotlin

Go

Distributed systems

Kafka

AI tools usage

Tools

Quarkus

Kafka

Job description

Fancy having high ownership on the backend from day one?

We are currently partnered with a regulated payments fintech building the future of P2P payments, B2B payments, remittances, and neo-banking. With their HQ based in Dubai and their recent successful expansion they are now looking to expand with a European hub in Porto.

If you're excited about building innovative fintech products and shaping how the companies of the future will operate, you're in the right place.

What will you be doing?

• Develop and maintain robust, scalable backend systems that support secure and reliable financial transactions.
• Integrate and enhance payment capabilities across mobile money platforms, banking partners, and card networks, including M-Pesa.
• Build and optimise distributed services using Java, Quarkus, and Go within a microservices-based, event-driven environment.
• Improve the reliability and performance of key transaction processes, including payments, account funding, and settlements, through automated testing, observability, and proactive monitoring.

Who are we looking for?

• Strong experience with Java or Kotlin, ideally working on large-scale systems. Knowledge of Go is a plus.
• Good understanding of distributed systems, Kafka, and handling reliable financial transactions.
• Experience managing live systems, including monitoring, troubleshooting, and deploying updates.
• Awareness of security best practices, including access management, data protection, and secure coding.
• At least one year of hands-on experience using AI tools, with examples of building AI agents or automations that have reduced manual work and improved efficiency.
• Previous experience working within a fintech is ideal.

Location: Remote anywhere in Portugal or hybrid in Porto (if you love going into the office)

Working Hours: East Africa Time (EAT) with core collaboration hours from 10:00 AM - 3:00 PM EAT

Compensation: Highly competitive salary + comprehensive benefits