Principal Engineer

Lorien; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Lorien seeks an experienced Senior/Lead Software Engineer to join a strategic xVA technology team responsible for pricing, counterparty credit risk, and regulatory capital calculations across global derivatives portfolios.

The role combines 50% hands-on coding with 50% managerial duties, offering technical leadership, architecture design, and mentorship across stakeholders in Front Office, Risk, Finance, and Trading. Strong Java, Spring, and cloud experience are essential.

Qualifications

• Strong Java development background within enterprise-scale environments.
• Expertise in Spring, Hibernate, JPA and REST APIs.
• Experience across both monolithic and microservices architectures.
• Advanced SQL and PostgreSQL skills.
• Distributed systems design, performance optimisation and scalability.
• Technical leadership, architecture design and mentoring responsibilities.
• Experience partnering with Front Office, Risk, Finance or Trading stakeholders.
• Cloud exposure, ideally Google Cloud Platform (GCP).
• CI/CD, automation and platform modernisation experience.
• xVA knowledge including CVA, FVA, KVA and MVA.
• Regulatory capital and margin frameworks (SA-CVA, BA-CVA, SIMM).
• JMS, TIBCO EMS or event-driven architectures.

Responsibilities

• Lead and contribute to pricing, counterparty credit risk and regulatory capital calculations.
• Balance 50% hands-on coding with 50% managerial responsibilities.
• Collaborate with Front Office, Risk, Finance or Trading stakeholders.
• Design and implement scalable architectures across monolithic and microservices platforms.

Skills

Java development

Spring

Hibernate

JPA

REST APIs

Monolithic architecture

Microservices

SQL

PostgreSQL

Distributed systems

Performance optimisation

Architectural design

Technical leadership

Mentoring

Stakeholder collaboration

Cloud exposure

GCP

CI/CD

Automation

Platform modernisation

xVA knowledge

Tools

JMS

TIBCO EMS

Job description

We're seeking an experienced Senior / Lead Software Engineer to join a strategic xVA technology team supporting critical pricing, counterparty credit risk and regulatory capital calculations across global derivatives portfolios.

50% hands on coding / 50% managerial

Key Skills & Experience

• Strong Java development background within enterprise-scale environments
• Expertise in Spring, Hibernate, JPA and REST APIs
• Experience working across both monolithic and microservices architectures
• Advanced SQL and PostgreSQL skills
• Distributed systems design, performance optimisation and scalability
• Technical leadership, architecture design and mentoring responsibilities
• Experience partnering with Front Office, Risk, Finance or Trading stakeholders
• Cloud exposure, ideally Google Cloud Platform (GCP)
• CI/CD, automation and platform modernisation experience

Highly Desirable

• xVA knowledge including CVA, FVA, KVA and MVA
• Regulatory capital and margin frameworks (SA-CVA, BA-CVA, SIMM)
• JMS, TIBCO EMS or event-driven architectures