PRIMUS Global Solutions (PRIMUS UK & Europe)
Java Software Engineer
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Requirement
We are looking for engineers who combine deep technical craft with genuine capital markets domain knowledge. The two are equally important: candidates who have one without the other are unlikely to be effective in this environment.
Test-driven Development
Test-driven Development is non-negotiable. Engineers must be practitioners of TDD, not just advocates, and are expected to own the quality of their deliverables end-to-end rather than outsourcing it to a separate QA group. We expect candidates to demonstrate this through their approach to design, not just their ability to write tests after the fact. This will be assessed at interview.
Java
Expert level primary delivery language.
Event-driven Architecture
Practical experience designing and building systems on message passing and event sourcing patterns, including failure handling, ordering guarantees, and replay semantics.
Agile Delivery
Strong preference for engineers who have worked in genuine iterative delivery environments with short feedback loops, not waterfall projects labelled as agile. This includes a focus on Continuous Integration/Continuous Delivery using techniques such as trunk-based development and achieving frequent (1 per week) production releases during regular business hours without any service interruption.
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Domain Experience
Candidates must have hands-on experience working in or alongside a capital markets trading or post-trade environment. Crucially, we seek engineers who are proactive in developing deep domain knowledge themselves rather than solely relying on Business Analysts for this expertise. The following are indicators of the required depth, not an exhaustive list:
- In-depth understanding of the trade lifecycle, including Trade Booking and Position Management principles
- Practical experience with post-trade operations such as Cash flow Calculation, Settlement Wires, Client Reporting, and Accounting principles
- Familiarity with corporate actions, regulatory reporting, and integrating with risk valuation systems in an equities context
- Understanding of Prime Brokerage, Synthetic Swap, or Cash Equity operational flows is a significant advantage
- Exposure to regulatory reporting obligations in a financial context (e.g., 871m, EMIR, MiFID) is advantageous
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Candidates should be able to demonstrate this experience at interview with concrete examples, not high-level familiarity.
Technical Experience
Experience in any of the following strengthens a candidate's profile. None are individually mandatory beyond Java and TDD.
Backend
- JVM
- Kotlin
Messaging
- Kafka
- Solace
- TIBCO EMS
Data
- SQL Server
- MongoDB
- S3 object store
Cloud Infrastructure
- Kubernetes
- OpenShift
Observability
- Open Telemetry
- ELK stack
- Grafana
Secrets Management
- HashiCorp Vault
- Cyber Ark
AI-assisted Development
- GitHub Co-pilot
- Devin
Mandatory Skills
- AWS S3
- Java
- Kafka
- Kubernetes
Good to Have Skills
- Kotlin
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