Software Engineer

We're looking for a skilled Core Ledger Specialist to join our platform team. Our team does not develop the core ledger systems ourselves — they are built and delivered by external suppliers. Your role is to understand the business and financial logic deeply, define and write clear requirements, verify and regression test what our suppliers deliver, and support internal configuration of the platform. A significant part of this role is providing hands-on internal support to colleagues across the business who rely on the core ledger day to day — this is something all specialists in the team spend a lot of time on. This role calls for strong analytical and technical skills combined with a good understanding of how financial ledgers work. You will join a small, close-knit team: today the Core Ledger team consists of a Head of Core Ledger IT, a Product Manager, and two Core Ledger Specialists (one of whom also carries delivery management responsibilities). This is a great opportunity to make a direct impact early on and help shape the team as it grows. KEY RESPONSIBILITIES * Define and document clear, detailed requirements for transaction processing, balance management, and posting logic, to be delivered by external suppliers * Verify and regression test supplier deliveries to ensure data integrity, accuracy, and consistency across all ledger operations * Collaborate with the Head of Core Ledger IT and suppliers on solution design and technical decisions * Investigate and resolve complex ledger-related incidents and data discrepancies, working with suppliers when needed * Maintain clear documentation, including requirements, data flows, test results, and runbooks * Support internal configuration of the core ledger platform * Provide hands-on internal support to other teams (finance, customer service, operations, and others) on day-to-day ledger questions and issues — this is a significant and ongoing part of the role * Support integration of new products and financial instruments into the ledger framework, working with suppliers and Product Management * Work closely with QA and the Delivery Manager to ensure supplier deliveries are well tested before approval QUALIFICATIONS AND EXPERIENCE Desired Skills * 4+ years of experience working with financial or transactional systems, in a requirements, analysis, or configuration role * Strong understanding of bookkeeping, financial transaction processing, or core banking systems * Experience writing clear, detailed requirements and acceptance chriteria for systems delivered by external suppliers * Familiarity with relational databases and ability to query and analyse data (SQL) * Solid understanding of how to verify and test complex system deliveries Nice to Have * Experience working in a regulated financial environment (banking, payments, BNPL) * Knowledge of accounting standards and financial reporting requirements * Experience working with externally delivered or outsourced systems * Familiarity with testing frameworks and structured test methodologies Behaviours * Precision-minded — takes accuracy and correctness seriously, especially in financial contexts * Service-minded and approachable — enjoys helping colleagues understand and resolve ledger-related questions * Curious and continuous learner who stays current with industry practices * Collaborative team member who shares knowledge and supports colleagues * Takes ownership of problems and follows through to resolution * Constructive and clear in requirements discussions and supplier reviews Education BSc or MSc in Computer Science, Software Engineering, or equivalent practical experience. Languages Fluent English is required for this role. Spanish and Swedish language is a plus. WE OFFER * A key role in building and shaping a modern, cloud-native core ledger platform * A collaborative, cross-functional team environment with short decision paths * Competitive salary and benefits package * Flexible working arrangements with hybrid options * Opportunities for professional development and continuous learning * A chance to make a real impact in the fintech space across the Nordic market * Modern office in central Málaga with a strong team culture

We are looking for an experienced QA Lead to own quality assurance for our Core Ledger platform. Our team does not develop the core ledger systems ourselves — they are built and delivered by external suppliers. Your role is to set the test strategy, verify and regression test what our suppliers deliver, and make sure nothing goes live unless it meets our requirements. Since the systems involved are financial, precision and thoroughness really matter — you will be the last line of defence before a delivery is approved. This is a newly established, hands-on position within a small team. In this initial phase, the role will not carry direct reports; instead, the focus will be on personally executing tests, developing the test strategy, and leading verification and regression testing efforts in close collaboration with the wider team. Key Responsibilities * Define and own the overall test strategy for the Core Ledger domain, covering functional, regression, integration, and acceptance testing of supplier deliveries * Personally build and maintain test plans, test cases, and (where applicable) automated regression suites * Work with the Head of Core Ledger IT, Core Ledger Specialists, and Product Manager to embed quality from requirements through to delivery approval * Verify and regression test ledger transaction flows, balance calculations, and reconciliation logic delivered by suppliers * Drive a quality mindset across requirements writing, ensuring testability is considered from the start * Investigate and triage defects, coordinating resolution with suppliers and internal stakeholders * Define and track quality metrics; report on test coverage, defect trends, and delivery readiness * Participate in go/no-go decisions for supplier deliveries based on quality criteria * Support internal teams with questions about test results, known issues, and quality status * Contribute to risk assessments for major platform changes or new product introductions QUALIFICATIONS AND EXPERIENCE Desired Skills * 5+ years in QA roles, with experience leading test strategy and acceptance testing for complex systems * Strong experience with test automation tools and frameworks (e.g. Selenium, Cypress, RestAssured, Playwright) * Deep knowledge of testing methodologies — functional, regression, integration, and acceptance testing * Experience verifying and accepting deliveries from external suppliers or vendors * Solid understanding of how to structure test plans and test cases against detailed requirements Nice to Have * Experience testing financial systems — ledgers, payment flows, reconciliation, or core banking * Knowledge of performance and load testing tools (e.g. Gatling, k6, JMeter) * Experience working with vendor or supplier delivery models * Experience in a regulated financial or payments environment Behaviours * Quality champion — passionate about getting things right, not just fast * Detail-oriented and methodical, especially in high-stakes financial contexts * Strong communicator who can articulate quality risks to both technical and business audiences * Proactive and self-driven — able to identify gaps and take initiative to address them independently * Collaborative, working closely with a small team and external suppliers Education Bsc in Computer Science, Software Engineering, or related field. An ISTQB certification (or similar) is a plus. Languages Fluent English is required for this role. Spanish and Swedish language is a plus. WE OFFER * A key role in building and shaping a modern, cloud-native core ledger platform * A collaborative, cross-functional team environment with short decision paths * Competitive salary and benefits package * Flexible working arrangements with hybrid options * Opportunities for professional development and continuous learning * A chance to make a real impact in the fintech space across the Nordic market * Modern office in central Málaga with a strong team culture