Apex Systems
Java Software Engineer

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Quantitative Software Engineer
As a Quantitative Software Engineer, you will be joining a high-performing team exposed to many of the most exciting business and technology challenges faced within its trading businesses today, focusing on maximising value from BP’s assets and operations. Typical solutions include use of advanced optimisation techniques (e.g. Heuristic Optimisation), Machine Learning, and simulation-based Reinforcement Learning.
You will work closely with Traders and Operators to optimise various aspects of operations, ranging from efficient logistical operations (for example, shipping scheduling), partnering with traders to ensure our portfolios are kept optimal. You will develop a deep understanding of the optimisation algorithms and of the business context in which the team operates.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
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Most of your time will be focused on writing code, while pursuing software engineering best practices for design, build, and test. High-quality documentation, traceability, and knowledge sharing are expected.
Additionally, you will work directly with the Optimisation Technical Team Lead on the evolution of the current technology platform in place, as well as the long-term strategy and roadmap for the increased use of optimisation.
This is a unique role well positioned to create substantial value for the business and requires an individual with the right mix of software engineering, quantitative, and communication skills.
Essential:
- Advanced knowledge of Java and associated ecosystem (Java 25, GIT, Maven, Jenkins, SpringBoot/RESTful Webservices).
- Strive for excellence and continuous improvement in software architecture, Agile methods, and build systems, as well as the underlying optimisation algorithms.
- Ability to work closely with the business, draw out their requirements, and create a mathematical model. Strong communication skills with the ability to present ideas well graphically as well as verbally.
- Strong mathematical and numeracy skills.
- A quantitative degree – with commercial experience of advanced algorithm implementation.
- Good understanding of Computational Complexity Theory (EG: Big-O notation).


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Desirable:
- Experience in optimisation. Examples include linear programming and solving a TSP using a heuristic approach such as simulated annealing, genetic algorithms, or machine learning.
- Experience with DevOps: working with AWS, Docker, Ansible, Kerberos, Openshift/Kubernetes.
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