Senior Software Engineer

Fintua are a rapidly growing company with a strong reputation for innovation and excellence, recognised through numerous prestigious awards including Fintech of the Year, Deloitte Best Managed Company, and the Irish Accountancy Awards for Best Use of Technology and Accounting 2025. These accolades reflect our commitment to delivering cutting-edge solutions, operational excellence, and exceptional value to our clients. As our business continues to scale and our product offerings expand, we are investing further in our future by growing our development team, bringing in talented individuals who are eager to help shape the next phase of our success.

We are seeking an experienced Senior Software Developer to help design and build a scalable, event-driven data processing platform. The system integrates multiple AWS services, leverages C# for all core application logic, and uses Python within AWS Glue for ETL transformations. You will work closely with engineering leads to implement queue-driven workflows, serverless components, and data ingestion pipelines aligned with our target architecture

. Location: Hybrid - must attend the Kilkenny HQ 2x days per wee

k. Minimum Requireme

• nts5+ years of professional software development experien
• ce.5+ years of strong, hands-on experience with C# and the .NET ecosyst
• em.Commercial experience with Python, ideally in data processing or ETL workflo
• ws.Strong understanding of ETL concepts, data quality, and transformation pipelin
• es.Experience with REST APIs, messaging systems, and asynchronous architectur
• es.Solid understanding of relational databases and S
• QL.Experience working with NoSQL data stor
• es.Familiarity with CI/CD pipelines, automated testing, and modern development practic
• es.Ability to interpret technical architecture diagrams and translate them into working, maintainable solutio

ns. Nice to

• HaveExperience with AWS Glue (Python ETL scripts, Glue jobs, Glue workflo
• ws).Experience with the following AWS servi
• ces:At
• henaDyna
• moDBAurora Limit
• lessLa
• mbd
• aSQSAPI Gat
• ewayCognito / SSO integrat
• ionsExperience building distributed systems and event-driven workfl
• ows.Familiarity with IaC (Terraform, CloudFormation, or C

DK). Key Responsibilities1. Implement Core Application Services

• (C#)Build and maintain C# Lambda functions, background workers, and microservices that integrate with queues such as
• SQS.Develop data ingestion endpoints and backend services consumed by internal and external
• APIs.Implement retry, failure handling, and idempotency logic across queue-based workf

lows.2. Develop and Maintain ETL Processing Pipelines (Python in AWS

• Glue)Write Python ETL jobs in Glue for data extraction, transformation, and loading into reporting or downstream sys
• tems.Work with structured and semi-structured data formats (JSON, CSV, Parq
• uet).Optimize Glue jobs for performance, cost efficiency, and reliabi

lity.3. Work Across an Event-Driven Archite

• ctureImplement components that interact with SQS queues, Lambda functions, and internal processing clus
• ters.Ensure data flows reliably from ingestion to transformation to downstream repor
• ting.Build mechanisms to correct, reprocess, or quarantine problematic

data.4. Build Secure, Scalable API Integra

• tionsImplement REST endpoints behind API Gateway and integrate with Cognito/SSO authentica
• tion.Ensure correct handling of authentication tokens, authorization rules, and API throttling patt

erns.5. Collaborate on System Design and Archite

• ctureContribute to design discussions and refinements of the overall architec
• ture.Ensure solutions align with cloud best practices and support long-term scalabi
• lity.Provide guidance to junior developers and participate in peer rev

iews.6. Quality, Testing, and DevOps Alig

• nmentWrite automated tests across unit, integration, and end-to-end le
• vels.Contribute to CI/CD pipelines and deployment automa
• tion.Monitor and troubleshoot production systems using logs, metrics, and dashbo

ards. Recognised as a both a Great Place to Work and Deloitte Best Managed Company, we believe that recognition goes much deeper than just financial rewards. Therefore, in addition to a competitive salary, we also offer an exclusive benefits package that inc

• ludes:Competitive p
• ensionFlexible Working Policy with a combination of remote and office working and a flexible approach to working
• hoursCompetitive annual leave and a number of other leaves including IVF, compassion, marriage, maternity and paternity
• leaveEmployee-led CSR Programme, CluneTech Cares, with one paid Volunteer Day pe
• r yearDeath in Service B
• enefitMilestone Recognition Pro
• grammeProfessional & Personal Devel
• opmentRewards & Recog
• nitionEmployee Wellbeing Programme, CluneTec

h Life Fintua is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all emp

loyees.