Senior Core Banking Application Developer (Systems & Integrations) at InventYOU AB

Athens, Attica, Greece -

Full Time

Start Date

Immediate

Expiry Date

07 May, 26

Salary

0.0

Posted On

06 Feb, 26

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Core Banking Applications, Systems Integrations, Software Development Lifecycle, COBOL, C, Python, AS/400, z/OS, Data Flows, SDLC Processes, Performance, Security, Scalability, Technical Documentation, Problem-Solving, Testing

Industry

Information Technology & Services

Description

We are looking for a Senior Core Banking Application Developer to design, develop, and enhance core banking applications and integrations that support critical business operations. This is a hybrid role for an experienced engineer who enjoys building reliable, scalable solutions and contributing across the full software development lifecycle in complex enterprise environments. Key Responsibilities Design, develop, and maintain core banking applications Participate in the full software development lifecycle, from requirements to production support Implement enhancements and new features for mission-critical banking systems Develop integrations between internal and external services Perform testing, validation, and data integrity checks Troubleshoot and resolve complex software issues and defects Produce technical documentation for architecture, functionality, and processes Collaborate with cross-functional IT and business teams Ensure high standards of performance, security, and scalability Contribute to continuous improvement of development practices and system quality Bachelor’s degree in Computer Science, Information Technology, or related field 4+ years of software development experience in core banking or enterprise systems Strong knowledge of banking operations and financial systems Proficiency in COBOL, C, or Python Experience with enterprise core banking platforms (AS/400 or z/OS) Solid understanding of system integrations and data flows Strong analytical and problem-solving skills Experience working with structured SDLC processes Fluency in English You will be a great candidate for us if you Enjoy building and improving complex applications Like working end-to-end from requirements to delivery Have strong ownership of your code and solutions Collaborate effectively with technical and non-technical stakeholders Thrive in fast-paced, high-impact environments Why join inventYOU Contribute to the evolution of critical core banking systems Work with modern engineering practices and experienced teams Gain exposure to large-scale financial platforms Hybrid working model with strong career growth opportunities

Responsibilities

The developer will design, develop, and maintain core banking applications and implement enhancements for mission-critical banking systems. Key tasks include developing integrations between internal and external services and ensuring high standards of performance and security.