Home
Jobs
Airswift
Senior Java Software Engineer

Senior Java Software Engineer

Hybrid

Belfast, United kingdom

Freelance

06-05-2025

Share this job:

Expired

Job Specifications

Senior Java Engineer – Core Java, Algo, Distributed Systems
Location: Belfast – 2/3 days per week needs to be possible (only considering candidates in NI)
Type: Contract
Industry: Investment Banking
Duration: ASAP – long term (12 months to start with extensions)

We’re seeking Senior / Lead Java Engineers to join a team building high-performance systems that support trading across Equity Swaps, Delta One, and Prime Brokerage. While low-latency expertise is not essential, a deep command of Core Java and algorithmic/data structure proficiency is critical to succeed in this complex and performance-sensitive environment.

Key Responsibilities:
Design and enhance trading engines for derivatives and structured financial products.
Build scalable systems to support high-volume operations (100s of TBs of data).
Refactor and decouple legacy components, with a focus on MongoDB and modern relational DBs like PostgreSQL.
Drive cloud readiness, adopt microservices architecture, and contribute to distributed system designs.
Lead database migrations from legacy systems (e.g., Sybase, DB2) to modern platforms.

Required Skills:
Strong Core Java expertise, with a focus on performance tuning and optimisation.
Solid understanding of algorithms, data structures, and concurrent distributed environments.
Proven experience with MongoDB and relational databases (e.g., PostgreSQL).
Familiarity with service-oriented architecture, cloud platforms, and containerised environments.

Nice to Have:
Experience with SingleStore, Sybase, DB2.
Background in investment banking or financial services.

Join a high-calibre engineering team solving complex trading challenges with modern, scalable tech.

About the Company

We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors. With over 9,000 contractors and 1,000 employees in 60 offices worldwide, our talent pool and geographical reach are unmatched in the industry. Know more