mthree
Full Stack Engineer

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Full Stack Developer (Java, Scala, Python & Spark)
Location: London
mthree is hiring a Full Stack Developer to work with a tier-one global investment bank in London. You'll join the PnL Control group within Finance Technology, working on an accounting system that produces PnL and Balance Sheet reporting for secured funding transactions.
The system is built in Java and Scala on Spark. Alongside the engineering, the work involves digging into data to understand how secured funding products such as repos and stock loan are accounted for, so the team is looking for someone who is happy working across several technology stacks and getting into the business detail.
The Role
You'll build and develop the accounting and reporting platform used by PnL controllers. Working with local and global project managers, colleagues and internal Finance clients, you'll be involved in every stage of the development lifecycle, from analysis through to delivery.
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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Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
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.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Responsibilities
- Build the accounting system for PnL and Balance Sheet reporting on secured funding transactions, using Java and Scala on Spark
- Analyse the underlying data to understand the accounting treatment of products such as repos and stock loan
- Develop reporting for the PnL Control team
- Work closely with project managers and Finance stakeholders, locally and globally, across the full development lifecycle
- Contribute across the stack, picking up different technologies as the problem requires
Required Experience
- Hands-on coding in Java, Scala and/or Python
- Strong knowledge of Spark and object-oriented software development
- Exposure to UI technologies, ideally WPF and Angular
- Good understanding of databases and Unix
- Good understanding of Git or similar version control tools
- Strong problem-solving and analytical skills
- Good communication skills
- An interest in finance, the business and data analysis


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Desirable Experience
- Understanding of Agile, DevOps and software engineering principles
- Scripting knowledge, e.g. Python, Shell or Perl
About mthree
This role is through mthree's Expert programme. You'll be employed directly by mthree and deployed full time with one client, working as part of their team on their projects. Throughout the assignment you'll have ongoing support from mthree, and where applicable there is a clear route to permanent employment with the client.
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