Senior Back-End Engineer - OTC UK (F/M/D)

Flowdesk; London; On-site; GBP 50,000 - 90,000; Full time

Job summary

An established industry player is seeking a Senior Backend Engineer to join their innovative team in the digital asset space. This role involves building and scaling a brokerage OTC platform while working closely with Trading and Sales teams. The ideal candidate will thrive in a fast-paced environment, leveraging their expertise in Typescript and modern programming practices to enhance system performance and reliability. Join a dynamic squad of international engineers and contribute to revolutionizing the crypto trading industry with cutting-edge technology. If you are passionate about tech and eager to make an impact, this opportunity is for you!

Benefits

100% health coverage

Top-of-the-range equipment

Team events and offsites

Gym memberships (coming soon)

International mobility (coming soon)

Qualifications

• Experience with modern programming languages, especially Typescript.
• Familiarity with distributed systems and complex system design.

Responsibilities

• Enhance infrastructure reliability and performance as the company scales.
• Integrate new microservices to strengthen the technical framework.

Skills

Typescript

Rust

Problem-solving

Test-driven development

Distributed systems

Complex systems design

Education

Bachelor's degree in Computer Science or related field

Tools

Docker

Kubernetes (K8s)

PostgreSQL

MySQL

NATS

Job description

Flowdesk is rapidly growing and looking for new talents!

Founded in 2020, Flowdesk is a regulated, full-service digital asset trading and technology firm that specializes in market making, OTC and treasury management services. We have engineered a trading infrastructure that integrates more than 120 centralized and decentralized exchanges. Combining proprietary technology with significant experience from traditional markets and algorithmic trading, Flowdesk brings control and transparency to digital asset markets.

Flowdesk has offices in France, Singapore, the U.S. and the U.K.

Job Description

Do you thrive in a fast-paced, innovative environment? Are you excited to build cutting-edge technology in the digital asset space? At Flowdesk, we’re on a mission to revolutionize the crypto trading industry, and we want you to be part of this exciting journey!

Flowdesk is growing fast, and as a Senior Backend Engineer, you’ll work closely with our Trading and Sales teams to build and scale our brokerage OTC platform using the latest cloud and deployment technologies. You’ll be part of a dynamic squad of international engineers and among the first in UK OTC Tech team.

Responsibilities include but are not limited to:

• Enhance the reliability and performance of our infrastructure, ensuring it scales with our growth
• Improve data acquisition channels, ensuring our systems are always fed with real-time, accurate data
• Solve incoming technical issues quickly and efficiently, ensuring minimal downtime
• Integrate new technical/financial microservices that will further strengthen our infrastructure

Our stack: Rust, Typescript, NodeJS, Docker, K8s, NATS, PostgreSQL, MySQL

Requirements

What We’re Looking For

• Programming experience with at least one modern language and the confidence to work on Typescript (Rust is a plus, but be open to using it)
• Experience with test-driven development to ensure that our code is clean, reliable, and scalable
• Experience with distributed systems
• A track record of designing complex systems (architecture, design patterns, reliability, and scaling)
• Problem-solving mindset, able to tackle challenges and optimize solutions in a fast-paced environment
• Nice-to-Haves
• Experience with web3 libraries (ethers.js, go-ethereum, etc.)
• Familiarity with Hexagonal Architecture
• Experience within a trading environment
• Must be a UK Citizen

Company Culture and Values

• Ambition: We aim to conquer an impactful place in the crypto ecosystem while representing Tech expertise. We're always moving quickly toward our goals.
• Caring: While speed matters, we believe in waiting for others to move forward together. That’s how we achieve success as a team.
• Ownership: If you believe in something, own it, make it happen, or at least learn from it.
• Humility: The final result is a puzzle built by everyone’s efforts—not one person takes all the credit.
• International environment (English is the main language)
• 100% health coverage
• Top-of-the-range equipment, Macbook, keyboard, laptop stand, 4K monitor & headphones
• Team events and offsites
• Coming soon, gym memberships, international mobility & many other cool benefits

Recruitment process

Are you interested in this job but feel you haven't ticked all the boxes? Don't hesitate to apply and tell us in the cover letter section why we should meet.

Here's what you can expect if you apply:

• HR interview (30')
• Technical test
• Technical discussion with a senior member of the Technology team
• Technical interview with the VP OTC Technology (60')
• Chat with the Head of People (30')

On the agenda - discussions rather than trick questions! These moments of exchange will allow you to understand how Flowdesk works and its values. But they are also (and above all) an opportunity for you to present your career path and your expectations for your next job!