Senior Backend Developer

At Wyden (Contractor), in

Expires at: 2026-12-09

Remote policy: Full remote

Senior Backend Developer

Remote, Full time, Technology Team

Wyden is seeking a passionate and skilled Senior Back-end Developer who possesses a keen eye for detail, and a natural thirst for working with industry leading technology.

Who we are...

Wyden is the leading provider of institutional digital asset trading technology to financial institutions. We are a collaborative and laser-focused team of leaders and engineers committed to building advanced, scalable and modular trading infrastructure that underpins our clients' digital asset product offerings and operations.

Today, dozens of banks, brokers, and financial service institutions rely on Wyden's products. Digital assets are now a mainstream asset class, and financial institutions are fast adopting digital assets in response to digital asset regulations around the globe.

If you are passionate about the institutional digital asset ecosystem and want to play a central role in shaping how the industry connects and grows, Wyden is the home for you.

Established in Zurich, Switzerland, Wyden also has a development hub in Poland.

About the role

We are looking for a Senior Backend Developer based remotely, ideally 90km drive from Lisbon- able and willing to travel to meet in person with other colleagues which could potentially be a few times a month.

As a Senior Backend Developer, you will design and implement strategic features for our core product Wyden and quantitative trading strategies for our clients. The successful candidate will be working with the latest Cloud technologies. This is an extremely exciting time to join an ambitious high-growth Fintech with a strong client base and market demand for a well-established solution.

Your responsibilities will include:

Design and implementation of future releases of Wyden including key infrastructure components such as low latency order management, execution algorithms, smart order routing, event handling, and business services

Close collaboration with product management, development team, head of development and customers

Distributed systems engineering and running services in the cloud environment

Following current industry trends and incorporating best practices into the solution

Understanding of security, authentication and authorization mechanisms

The ideal candidate would bring:

Must have:

-A minimum of 8–10 years of engineering experience. This is a hard criterion, and candidates who do not meet this level of experience will not be considered.

-Exceptional proficiency in Java and/or Kotlin.

-Strong use of modern AI-assisted development tools.

-Bachelor’s degree in IT/Computer Science or equivalent practical experience.

-Strong experience designing and building distributed systems.

-Experience in financial services, trading, capital markets and/or crypto is a strong plus, but not mandatory.

-Strong knowledge of the following technical areas:

-Distributed systems and architectures

-Asynchronous and event-driven systems

-Messaging systems, including Kafka and/or RabbitMQ

-Idempotency and replayability

-API and schema versioning

-Resilience, failure handling and fault-tolerant system design

-Performance optimisation and low-latency systems

-AWS, including cloud-based application development and integration testing

-Container orchestration with Docker, Kubernetes and AWS EKS

-Monitoring and observability tooling

-CI/CD and process automation

-Networking concepts

-Distributed caching

-Reactive programming

-Performance testing

-Clean coding and test automation

-Agile values, continuous improvement and iterative development

Ideally you are no more than a 90km drive from Lisbon and able and willing to travel to meet in person with other colleagues which could potentially be a few times a month TBC

We very much appreciate Cover Letters that provide more context around your knowledge of Digital Assets and motivation for making this application to Wyden (we read every one!)

What Wyden offers

An opportunity to play a key role in shaping the future of the digital assets industry.

Competitive salary and benefits package

Flexible / remote working policies

Career development opportunities in a fast-growing startup

An open and dynamic work environment where everyone is valued

Become part of a global team of professionals with a diverse range of expertise covering banking, trading, software and systems development, and more.