Full Stack Engineer

Wintermute; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Pension

Private Health Insurance

Office in London

Job summary

Wintermute in London is seeking a Senior Full Stack Engineer who will own end-to-end trading applications for internal and client-facing portals, from backend services to frontend interfaces.

You will collaborate across product, trading and engineering teams to build scalable, secure systems with Go and/or Python, REST/WebSocket APIs, and AWS-based infrastructure. Expect independence, rapid impact, and a chance to help shape a platform from scratch.

Qualifications

• 5+ years of software development across backend and frontend.
• Strong backend engineering skills with Go and/or Python; design and implement services, REST/WebSocket APIs.
• Experience in client-facing financial or professional services products; fintech or crypto domain is a plus.
• Good understanding of infrastructure applications (CDN, Cloudflare, web servers, containers, CI/CD).
• Hands-on experience with AWS (EC2/ECS, S3, IAM, VPC, load balancers) and Infrastructure-as-Code (Terraform).
• Relational databases and caching; efficient query design.
• Secure coding practices: OWASP risks, authentication, authorization, secrets handling, testing.

Responsibilities

• Build end-to-end applications for Wintermute's trading products and client portals.
• Own features across the stack: backend services, APIs, data models, and frontends.
• Collaborate with product, marketing, trading and engineering teams.
• Drive platform vision from scratch and own the user experience across customer lifecycle stages.

Skills

5+ years software development

Go

Python

REST APIs

WebSocket APIs

Frontend development

Cloud AWS

Terraform

Relational databases

Security best practices

Tools

Go

Python

AWS

Terraform

Job description

Wintermute is one of the largest crypto native algorithmic trading companies in digital assets. We provide liquidity across most cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high profile blockchain projects and traditional financial institutions moving into crypto. Wintermute also has a Wintermute Ventures arm that invests in early stage DeFi projects.

Wintermute was founded in 2017 and has successfully navigated industry cycles. Culturally, we combine the best of the two worlds: the technology standards of high-frequency trading firms in traditional markets and the innovative and entrepreneurial culture of technology startups. To Wintermute digital assets is not just another asset class, we believe in the innovative potential of blockchain, the fundamental innovations, we have a long-term view on the digital asset market and are taking a leadership position in building an innovative and compliant market. You can read more here.

Working at Wintermute

We are looking for a Full Stack Engineer who is passionate about building products and applications that people find useful and enjoy using. At Wintermute you will have an opportunity to grow and make a direct impact on trading by developing and improving all parts of the trading applications for internal and external users — from the interfaces traders and clients work in to the services and APIs behind them — while also getting advice and guidance from very experienced developers and traders. You will get a lot of independence and responsibility right away, and you'll learn at an unprecedented speed.

What will you work on

This role will involve building end-to-end applications for Wintermute's new trading products and client-facing portals, as well as internal trading applications and oversight/project management of corporate website development. You'll own features across the whole stack: designing and implementing backend services and APIs, modelling and exposing trading and market data, and building the frontends on top of them.

A great advantage of this position is to be part of creating and driving the vision for a platform/portal from scratch, as well as owning the experience across a range of customer lifecycle stages.

You will work very closely across multiple teams at Wintermute, including product, marketing, trading and engineering. You'll have an opportunity to improve your knowledge of building high-performance scalable applications, understand broader system architecture, and to understand algorithmic cryptocurrency trading.

We are open to experience from both personal and work-related projects. Interest in algorithmic trading is a plus.

• 5+ years of software development experience across both backend and frontend
• Strong backend engineering skills, with Go and/or Python preferred; comfortable designing and implementing services, REST/WebSocket APIs and their data models
• Experience in client-facing financial or other professional services products is preferred but not mandatory (please mention products you worked on and their intended target users); fintech or crypto domain experience is a plus
• Good understanding of the infrastructure applications run on: CDN, Cloudflare or similar, web servers, containers, CI/CD, plus basic monitoring and logging
• Hands‑on experience with a major cloud provider, AWS preferred (e.g. EC2/ECS, S3, IAM, VPC networking, load balancers); infrastructure‑as‑code such as Terraform is a plus
• Working knowledge of relational databases and caching, including schema design and writing efficient queries
• Experience developing secure code end to end: strong understanding of common vulnerabilities such as cross‑site scripting, cross‑site request forgery and other OWASP risks, along with authentication, authorisation and secrets handling, and best practices for testing and mitigating them

Here is why you should join our dynamic team:

• Working at one of the most innovative trading firms globally.
• Engaging projects offering accelerated responsibilities and ownership compared to traditional finance environments.
• A vibrant working culture with frequent team meals, holiday celebrations, gaming events, and company‑wide outings.
• A Wintermute-inspired office in central London, featuring an array of amenities such as table tennis and foosball, personalized desk configurations, a cozy team breakout area with games and free food.
• Great company culture: informal, non-hierarchical, ambitious, highly professional with a startup vibe, collaborative and entrepreneurial.
• A performance-based compensation with a significant earning potential alongside standard perks like pension and private Health insurance.

Note:

• Although we are unable to accept fully remote candidates, we support significant flexibility in regards to working from home and working hours.
• We offer UK work permits and help with relocation.