Jump Trading on cord

Jump Trading

Python Engineer

External position
London, UK
Hiring internally for Jump Trading?
Finance
We build to win.
Posted
a week ago
Checked
cord regularly checks that external positions are still open
2 days ago

Skills & Experience

Job roles: Back End
Experience level: Senior
Core skills considered: Python, Linux
Other skills considered: Cloud Computing

Logistics

Base salary: Undisclosed
Some companies on cord are unable to disclose salaries publicly due to internal company policies. Message the company for salary information.
Employment type: Permanent
Remote working: Hybrid
Visa sponsorship: Not available

Job Description

Jump Trading Group is committed to world class research. We empower exceptional talents in Mathematics, Physics, and Computer Science to seek scientific boundaries, push through them, and apply cutting edge research to global financial markets.

You would join a team of technologists working directly alongside quantitative researchers and traders, building the platforms, tooling, and infrastructure that Jump's trading efforts run on. Sitting at the intersection of research infrastructure, systems engineering, and quantitative development, these teams build the software researchers and traders use to develop, test, scale, and run strategies. Depending on your background and interests, that could mean working on the firm-wide research platform or embedding directly within a trading team - in both cases the engineering problems are the same: performance, scale, and turning research ideas into dependable production software. This is a strong fit for an engineer who wants to work close to quantitative research and trading without being limited to a narrow support role. The work is broad and high impact: building core platform capabilities, improving performance and scalability, and partnering with researchers to turn mathematically informed ideas into robust production tooling.


What You'll Do

  • Design, build, and improve the research and production infrastructure that underpins Jump's trading efforts
  • Work across a hybrid Python/C++ environment, balancing researcher usability with performance-critical systems development
  • Partner closely with quantitative researchers and traders to translate research workflows, models, and ideas into scalable, maintainable software
  • Develop foundational libraries, backend systems, and workflow tooling used to support strategy research, testing, and deployment
  • Improve system performance, algorithmic efficiency, and scalability across distributed and cluster-based compute environments
  • Own projects end to end, from design and implementation through testing, rollout, and ongoing improvement
  • Contribute to the evolution of the platform as the team expands its research capabilities and compute infrastructure

Skills You'll Need

  • At least 5+ years of professional software engineering experience in Python
  • Experience designing, analyzing, and implementing highly algorithmic code
  • Experience building production systems in Linux environments
  • Strong understanding of data structures, algorithmic complexity, and efficient implementation
  • Experience with concurrent and distributed systems
  • Familiarity with cluster, cloud, or other large-scale compute environments
  • Self-directed, intellectually curious, and comfortable taking ownership of meaningful technical problems
  • Minimum academic qualification: Bachelor's degree in Computer Science, Computer Engineering, Mathematics, Physics, or equivalent
  • Background in research infrastructure, high-performance computing, distributed systems, or performance engineering
  • Experience improving bottlenecks, scalability, or migration paths from researcher-friendly tooling into higher-performance systems
  • Ability to communicate technical tradeoffs clearly with both engineers and quantitative users

Bonus skills

  • Experience with Python/C++ interoperability and library development
  • Ability to work effectively with quantitative researchers and translate mathematical or theoretical ideas into practical software
  • Exposure to time series analysis, optimization, simulation, numerical methods, or other quantitative workflows
Python Engineer at Jump Trading
Position posted a week ago

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Starling Bank on cord

Starling Bank

Full Stack Engineer (ML Ops)

London, UK
FinTech · Banking · Finance
A better bank for everyone
Active
over 6 months ago
Responds to
0% of requests
Responds in
1h 55m
Requests
7 pending

Skills & Experience

Job roles: Full Stack
Experience level: Mid, Senior
Core skills considered: Java, React, Redux, AWS, JavaScript

Logistics

Base salary: £70K - £110K
Employment type: Permanent
Remote working: Hybrid (up to 2 remote days p/w)
Visa sponsorship: Not available

Job Description

Starling is the UK’s first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. All at the tap of a phone, all the time.

Starling is the UK’s first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way.

We’re a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We’re a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices.

Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We operate a flat structure to empower you to make decisions regardless of what your primary responsibilities may be, innovation and collaboration will be at the core of everything you do. Help is never far away in our open culture, you will find support in your team and from across the business, we are in this together!

The way to thrive and shine within Starling is to be a self-driven individual and be able to take full ownership of everything around you: From building things, designing, discovering, to sharing knowledge with your colleagues and making sure all processes are efficient and productive to deliver the best possible results for our customers. Our purpose is underpinned by five Starling values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness.

Hybrid Working

We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. We don't like to mandate how much you visit the office and work from home, that's to be agreed upon between you and your manager.

Our Data Environment

Our Data teams are excited about the value of data within the business, powers our product decisions to improve things for our customers and enhance effective and agile decision making, regardless of what their primary tech stack may be. Hear from the team in our latest blogs or our case studies with Women in Tech.

We are looking for talented data professionals at all levels to join the team. We value people being engaged and caring about customers, caring about the code they write and the contribution they make to Starling. People with a broad ability to apply themselves to a multitude of problems and challenges, who can work across teams do great things here at Starling, to continue changing banking for good.

Requirements

We have built our entire banking platform in house and mostly in Java. We are looking for people who want to work on building the tooling that is used by our engineers on a daily basis.

We are looking for people who are truly full stack, and are as comfortable polishing their javascript front end as they are debugging the innards of their java applications database interactions, or standing up infrastructure with terraform. We are looking for people who can:

  • Design REST apis.
  • Code backend services, ideally using Java, or another other server side compiled language.
  • Develop modern front ends, ideally using React and Redux.
  • Get their code into the cloud and support it there, ideally on AWS.
  • Believe in clean coding, simple solutions, automated testing and continuous deployment.
  • Like to take ownership of a feature from the original idea through to live.
  • Think (like us) that a small number of empowered developers is the right way to deliver software.

Company Benefits

  • 33 days holiday (including flexible bank holidays)
  • An extra day’s holiday for your birthday
  • 16 hours paid volunteering time a year
  • Part-time and/or flexible hours available for most roles
  • Salary sacrifice, company enhanced pension scheme
  • Life insurance at 4x your salary
  • Hybrid/remote working
  • Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr&Mrs Smith and Peloton
  • Generous family-friendly policies
  • Varied social groups set up and run by our employees
  • Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks
  • Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing

Full details are available on our careers site

Interview Process

Interviewing is a two way process and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational and we want to get the best from you, so come with questions and be curious. In general you can expect the below, following a chat with one of our Talent Team:

  • Stage 1 - 30 mins with one of the team
  • Stage 2 - Take home challenge
  • Stage 3 - 90 mins technical interview with two team members
  • Stage 3 - 45 min final with an executive and a member of the people team
Alex Yeates on cord
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