Senior Software Engineer

Longshot Systems Ltd; London; Hybrid; GBP 70,000 - 130,000; Full time

Job summary

An established industry player is seeking a Senior Software Engineer to join their innovative modelling team. This role focuses on enhancing predictive models that drive financial performance in sports betting analytics. The ideal candidate will possess extensive experience in mission-critical systems and will thrive in a hybrid working environment. You'll collaborate closely with researchers and have the autonomy to design effective systems and tooling. Join a dynamic team where your contributions will significantly impact the company's success, and enjoy a flexible work schedule that promotes a healthy work-life balance.

Benefits

Uncapped company bonus scheme

10% matched pension contributions

Private healthcare insurance

Long term illness insurance

Gym membership

Choose your own hardware & setup

Qualifications

• Degree from a top university and senior-level experience in mission-critical systems.
• Fluency in multiple programming languages, especially Python.

Responsibilities

• Work closely with researchers to maintain trading infrastructure.
• Design and implement tooling and systems for data pipelines.

Skills

Python

Continuous Integration (CI)

AWS

Docker

Fluency in multiple programming languages

Education

Degree in a technical subject

Tools

Docker

AWS

Job description

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At Longshot Systems we're building advanced platforms for sports betting analytics and trading.

We're hiring for a Senior Software Engineer within our fundamental modelling team. The primary goal of this team is to improve the predictive power of our models based on historical event data. The quality of our models is incredibly important to us and improvements on our models directly impact financial performance.

You'll be working closely with researchers, helping maintain trading infrastructure, and helping the team scale and improve the systems at the heart of the business. You'll be working on data pipelines, build, support systems and infrastructure. A very wide ranging role requiring extensive experience across multiple technologies.

The ideal candidate will be highly creative and enjoy generating new, innovative ways to tackle problems and suggesting improvements to existing methodologies; you'll have a high level of autonomy to design and implement tooling and systems in a way you feel would be best suited to the problem at hand. A strong knowledge of operating systems, networks, software architecture and practical experience in deploying that knowledge is essential. Knowledge of sports betting or horse racing, which this team focuses on, isn't required.

We are a hybrid working company, with staff coming into the office in London every Thursday, plus any other days they like, working remotely at home the rest of the time. Our typical working hours are 10 am to 6 pm UK time, Monday to Friday, but we support flexible working and trust our team to manage their own schedules to meet their goals.

We're targeting Senior Developers for this role, ideally with several years of experience in mission-critical systems where precision, reliability, and fault tolerance are paramount. Our interview process is as follows:

1. A brief screening call to give you some more information about the role, answer any of your initial questions and to check your suitability for the role.
2. A 60 minute technical interview with our CTO and/or Team Lead, discussing your previous experience and also discussing some systems design challenges and how you'd approach them.
3. A collaborative coding assessment day, working with one of our team on some sample problems. This isn't leetcode, it's more about systems design and your approach to tradeoffs. This will last from 10am until 4pm UK time.
4. An in-person 'meet the team' at our London office.

Requirements

At least one, ideally both of:

• A degree in a technical subject from a top university demonstrating your ability to grasp and apply complex concepts.
• Several years of senior-level experience in teams building mission-critical systems where precision and reliability are essential to success.

Demonstrated professional expertise in the following areas:

• Fluency in multiple programming languages, with substantial experience in Python as a priority.
• Development and maintenance of Continuous Integration (CI) pipelines.
• Complex deployments on AWS.
• Docker or comparable containerization technologies.

Nice to have experience:

• Experience using numpy/pandas/torch/etc.
• Experience with Golang.

Benefits

Our salary range for the role is £70,000 to £130,000, depending on experience and interview performance.

List of benefits:

• Participation in the uncapped company bonus scheme, typically 10-20% of salary depending on experience.
• 10% matched pension contributions.
• Private healthcare insurance.
• Long term illness insurance.
• Gym membership.
• Choose your own hardware & setup for your development environment.