Senior Engineer

Senior Banksphere Engineer (Contractor) – Code Modernization Program

Location:

Remote
Contract Type:
Freelance / Contractor
Duration:
Long-term project
Workload:
Full-time
Daily Rate: €350–€500/day (depending on experience)
About the Opportunity
We are currently supporting a leading Spanish banking client in the expansion of its Code Modernization team and are looking for an experienced Senior Banksphere Engineer to join a strategic transformation program.

This role offers the opportunity to play a key part in the modernization of the bank's digital ecosystem, acting as the technical bridge between legacy banking platforms and a modern microservices architecture based on Spring Boot and Angular.
The successful candidate will be responsible for adapting and enhancing business logic within the Banksphere environment, enabling financial products across digital channels, and supporting the safe migration and decommissioning of legacy journeys.

Key Responsibilities
Design, adapt, and optimize transactional workflows and business logic within the Banksphere ecosystem.
Configure and enhance Banksphere layers to enable banking products such as Mortgages, Savings Accounts, and other financial services across digital channels.
Analyze, support, and safely decommission legacy application journeys while ensuring business continuity and minimizing operational risk.
Collaborate with Technical Business Analysts, Architects, and Modern Stack Development teams to define API contracts and map legacy data structures.
Configure and maintain business rules, validation logic, transactional restrictions, and alerting mechanisms within Banksphere.
Support the coexistence of legacy and modern platforms during the migration process.
Contribute to solution design discussions and provide expertise on Banksphere capabilities and limitations.
Required Skills & Experience
Minimum 4 years of hands-on experience working extensively with the Banksphere platform.
Strong background in banking transformation projects involving Banksphere.

Experience with one or more of the following banking domains:
Global Position consolidation
Customer authentication and security flows
Digital onboarding processes
Understanding of modern integration concepts and technologies, including:
REST APIs
JSON
Microservices architectures
Proven experience supporting migrations from legacy banking applications to modern web and digital channels.
Professional English proficiency (B2 level or higher).
Nice to Have
Knowledge of Host/Mainframe environments, including:
COBOL/CICS
DB2
Data mapping and integration
Experience working within Agile/Scrum delivery teams.
Previous experience in large-scale banking modernization or digital transformation programs.

What We Offer
Opportunity to work on a high-profile banking modernization initiative for a leading Spanish financial institution.
Fully remote working model.
International and collaborative environment.
Long-term engagement within a strategic transformation program.
Competitive contractor rate between €350 and €500 per day, with flexibility based on experience and expertise.