Looking for a job

Kreshnik Malaj

@kreshnikmalaj

Message

I build reliable payment integrations, reconciliation systems, and auditable money movement platforms.

Kosovo

Message

What I'm looking for

I'm looking to build reliable payment and financial systems where correctness, reconciliation, auditability, and resilient integrations matter. I value ownership of production systems, thoughtful handling of edge cases, and teams that improve live platforms without disrupting customers.

At Buckaroo, I own third-party and merchant-facing payment integrations end to end, from APIs and callbacks to duplicate protection, retries, and reconciliation for European merchants.

I build systems where payment edge cases are handled deliberately: idempotent MT940 ingestion, append-only ledgers with FX reversals, multi-currency allocation, AML reporting, and transaction-state reconciliation across eventually consistent services. I’ve also improved reporting API response times by about 20% and MySQL retrieval times by about 30%.

Across Buckaroo, Asseco SEE, Spaxel, and my solo SaaS product NovaHR, I’ve worked in C#/.NET, Python, SQL, cloud infrastructure, and production operations. I’m comfortable modernizing live platforms while preserving backwards compatibility and auditability.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer

Current

Buckaroo

Mar 2023 - Present (3 years 6 months)

Own third-party and merchant-facing payment integrations end to end, including API design, callback handling, retry semantics, duplicate protection, and post-hoc reconciliation. Decompose a large legacy PSP monolith into .NET 8 microservices while the platform stays live.

C#.NET 8+Microservices Elasticsearch MySQL AWS RDS IAM OpenSearch Eventual Consistency Reconciliations

Software Developer

Asseco SEE

Jul 2021 - Mar 2023 (1 year 8 months)

Delivered banking and financial software in a fully remote, distributed team of 10 across multiple countries. Proposed and implemented a 3-tier architecture that improved scalability and maintainability of the core product.

C#SQL Server Stored Procedures Architecture Distributed Teams

Software Engineer (C# / Python)

Spaxel

Jul 2022 - Nov 2022 (4 months)

Automated the regression suite, cutting total regression time by ~80%; refactored to a service/repository pattern and built external API integrations with unit and integration coverage. Resolved 3–5 production issues daily against live customer data.

C#Python Regression Testing API Integration Unit Testing Integration Testing