Senior Software Engineer - twentyAI

Job Specifications

Senior Software Engineer
Location: Central London
Contract Type: Freelance
Days in Office: 3 days a week
Day Rate: Up to £525 a day
Join a top-tier financial services institution on a mission to reshape the future of international banking technology. We're looking for a Senior Software Engineer to drive innovation across global platforms, leading efforts to modernize legacy systems and roll out cutting-edge solutions in new markets.
You’ll play a central role in high-impact initiatives—designing, coding, and deploying mission-critical services that support real-time, high-value payment systems. Working in an agile, collaborative environment, you’ll help architect scalable solutions and lead project delivery from planning to execution.
Key Responsibilities:
Lead development initiatives across a range of financial technology projects
Design, build, and maintain Java-based backend systems and Oracle integrations
Contribute to platform modernization efforts including OBPM and Flexcube integrations
Mentor junior engineers and support DevOps processes
Collaborate with global teams to deliver reliable and compliant software solutions
What We’re Looking For:
Proven experience in software engineering within the financial sector
Strong knowledge of Java, Oracle PL/SQL, and urgent/wire payment systems
Hands-on experience with Oracle Banking Payments Module (OBPM) and Flexcube
DevOps mindset with exposure to Jenkins and Agile practices
Experience in microservices architecture, WebLogic, and automation tools a plus

About the Company

TwentyAI is a talent and staffing solutions firm that combines cutting-edge AI technology, deep data insights, and human expertise to connect top talent with outstanding opportunity, specializing in data, technology, finance and GTM. Our in-house proprietary data analytics platform streamlines the recruitment process, enabling our consultants to focus on building meaningful relationships and staying ahead of industry trends. Since 2008, we've invested in both people and technology, driving business growth and career developm... Know more