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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer II - Data Onboarding & Reporting - **Company:** Wise - **Location:** London, UK - **Experience:** Expert - **Salary:** £96,296.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Airflow, Apache HTTP Server, Architectural Patterns, Cloud Computing, Cloud Database, Computer Programming, Data Architecture, Data Infrastructure, Extract Transform Load (ETL), Data Transformation, Data Structures, JSON, Python (Programming Language), Object-Oriented Software Development, Queueing Systems, SQL Databases, Software Technical Review, Data Ingestion, Snowflake, Technical Debt, Event Driven Architecture, Data Lakes, Avro, Apache Kafka, Presto, Data Lakehouse, Stream Processing, Data Pipelines - **Published:** July 31, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5821845153 ## About the Role * Data Lakehouse Mastery: Proven experience building data infrastructure using Trino / Presto and open table formats like Apache Iceberg or Delta Lake. * Advanced Data Modeling: Deep expertise in Medallion Architecture patterns, Star Schemas, and processing semi-structured financial data logs (JSON/Avro). * Robust ETL/ELT Orchestration: Expert proficiency in data transformation engines (such as dbt) and scheduling tools (such as Airflow). * Stream/Message Queues: Solid understanding of event-driven architectures and streaming processing via Apache Kafka. * Strong Programming Foundations: Proficiency in Python, SQL, or an Object-Oriented language (Java/Scala). Nice to Haves * Experience operating data assets within a regulated SOX/PCAOB compliance environment. * Familiarity with cloud data warehouses (e.g., Snowflake) and cloud compute orchestration. * Prior domain exposure to financial flows, double-entry ledger systems, or accounting integrations. Soft Skills * A strong sense of long-term technical ownership. * Excellent communication skills with the ability to bridge technical engineering realities with financial analyst requirements. ## Description Wise is on a mission to create money without borders-making it instant, transparent, and eventually free. To support this rapid global growth, our Finance Squad ensures that our financial processes run in an efficient, scalable, and controlled manner. We are looking for a talented Senior Software Engineer II to join our Data Onboarding Team in London. In this role, you will be the driving force behind building, scaling, and optimizing the critical data pipelines on top of our Lakehouse (Trino + Iceberg) infrastructure following a strict Medallion Architecture (Bronze, Silver, Gold layers). You will build robust data pipelines that serve as the foundational bedrock for reporting and assurance across the entire Finance squad. The Finance Squad is responsible for steward-shipping the financial truth of Wise. The Data Onboarding team operates alongside Core Accounting, Finance Implementation, and Data & Assurance. Our team's mandate is to abstract product complexity and build reusable, domain-agnostic stream-enrichment pipelines. We handle high-throughput financial event data (processing hundreds of millions of events daily) to bridge the gap between immutable product events and audit-ready data structures. What will you be working on? Technical Leadership & Pipeline Engineering * Lakehouse Architecture: Design, build, and optimize robust end-to-end data pipelines on top of our Trino + Iceberg Lakehouse stack. * Medallion Implementation: Own the extraction, cleaning, and modeling layers to progressively refine raw event logs (Bronze) into verified subledgers (Silver) and structured Gold metrics. * Stream Processing: Work closely with high-throughput messaging queues (Kafka) and real-time computation models to maintain our data freshness SLAs. * Data Quality & Assurance: Embed rigorous, automated reconciliation checks within the data pipelines (e.g., balance and double-entry validations) to catch data discrepancies before they reach financial reporting layers. Strategic Impact & Collaboration * Product & Stakeholder Alignment: Partner directly with finance controllers, analysts, product and engineering to turn complex corporate finance needs into production-ready data schemas. * Platform Alignment: Address data scaling constraints, structural technical debt, and compute optimizations to directly align infrastructure costs with Wise's financial targets. Mentorship & Engineering Excellence * Upskilling: Assist and coach mid-level/junior engineers within the team, performing thorough code and technical design reviews. ## Related Videos - [From event streaming to event sourcing 101](https://www.wearedevelopers.com/videos/91-from-event-streaming-to-event-sourcing-101) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Introducing JSON Structure](https://www.wearedevelopers.com/videos/100219-introducing-json-structure) - [Modern Data Architectures need Software Engineering](https://www.wearedevelopers.com/videos/1030-modern-data-architectures-need-software-engineering) - [Green Cloud Computing](https://www.wearedevelopers.com/videos/592-green-cloud-computing) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Data Analyst Salary in the UK](https://www.wearedevelopers.com/magazine/278-data-analyst-salary-in-the-uk) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)