Mohd
Haarish
Building high-throughput microservices & distributed systems. 3+ years shipping production-grade backends at Saxo Group.
I architect systems that scale under pressure.
I'm a Software Developer (SDE 2) at Saxo Group, where I design and ship distributed backend systems that power real-time financial operations for European clients. My work spans microservice architecture, Kafka-based event pipelines, and production-grade API development.
Over 3+ years I've led migrations from legacy monoliths to resilient distributed infrastructures, resolved critical concurrency bugs at the database layer, and mentored junior engineers on design patterns and engineering best practices.
Outside of work, I explore low-level computing — I once built a fully functioning 16-bit computer from scratch, from HDL logic gates all the way up to a compiler. I believe understanding the machine makes you a better engineer at every layer.
Microservices Architecture
Designing and shipping distributed services that migrate monolithic workflows to modern event-driven infrastructure with REST and Kafka communication.
Apache Kafka & Event Streaming
Building real-time payment pipelines with guaranteed delivery, type-safe message serialization, and near-instant settlement latency.
C# · .NET Core · REST APIs
3+ years delivering production backend services — open APIs with cursor pagination, OpenAPI specs, and high-volume transactional endpoints used by European financial clients.
SQL Server & Concurrency
Resolving race conditions with optimistic concurrency control and row-level locking. Writing optimized stored procedures for high-volume transactional workloads.
Resilience Patterns
Circuit breakers, retry mechanisms, request throttling — engineering services that hold under peak financial-market traffic.
CI/CD & DevOps
Azure DevOps (TFS) pipelines automating build, test, and deployment stages. Git, Jenkins, and Docker-based workflows.
Aug 2025Software Developer — SDE 2
Aug 2025Software Developer — SDE 2
- ▸Architected microservices to migrate critical business workflows from a legacy monolith to a modern distributed infrastructure using REST and Kafka-based event-driven communication.
- ▸Designed service architectures applying Repository, Strategy, Factory, and CQRS patterns — ensuring scalability, maintainability, and clear separation of concerns.
- ▸Engineered high-throughput services with request throttling, retry logic, and circuit breaker patterns, maintaining resilience under peak financial-market traffic.
- ▸Diagnosed and resolved critical race conditions in the database layer by implementing optimistic concurrency control and row-level locking strategies.
- ▸Authored technical design documents for cross-team feature rollouts and mentored junior engineers on best practices, code reviews, and design pattern adoption.
Aug 2022Software Developer — SDE 1
Aug 2022Software Developer — SDE 1
- ▸Delivered Tax Saving account (France PEA/PEA-PME) Transfer Out functionality, enabling compliant cross-border financial operations for European clients.
- ▸Integrated Apache Kafka into legacy payment services, cutting settlement latency from batch-cycle delays to near-instant real-time processing.
- ▸Built account-type-specific payment processing pipelines with type-safe message serialization and guaranteed Kafka delivery.
- ▸Published cursor-paginated Open APIs following RESTful standards and OpenAPI Specification for third-party vendor data integrations.
- ▸Established CI/CD pipelines on Azure DevOps Server (TFS), automating build, test, and deployment stages for faster, safer releases.
- ▸Wrote optimized SQL Server stored procedures and complex queries for high-volume transactional workloads.
Aug 2021Data Analyst Intern
Aug 2021Data Analyst Intern
- ▸Developed forecasting models for app download projections based on marketing spend, enabling data-backed budget reallocation decisions.
- ▸Projected Daily Active Users (DAU) for monthly, quarterly, and annual periods using trend analysis and historical data patterns.
- ▸Performed tag-wise notification impact analysis on DAU, identifying high-performing strategies that improved user engagement.
- ▸Built interactive Tableau dashboards tracking KPIs: DAU, notification performance, job listings, and revenue metrics.
- ▸Mentored a team of data analyst interns on SQL querying, analysis methodologies, and quarterly planning.
16-Bit Computer
Featured2022Built a fully functional 16-bit computer from the ground up — designed the CPU (ALU), RAM, and ROM in Hardware Description Language, then wrote a Jack Compiler (high-level → VM bytecode) and a VM Translator (bytecode → Assembly → binary). A complete vertical slice of computing from logic gates to executable programs.
Event-Driven Payment Pipelines
2023Engineered account-type-specific payment processing pipelines at Saxo Group integrated with Apache Kafka, reducing settlement latency from batch-cycle delays to near-instant processing. Implemented type-safe message serialization and guaranteed-delivery guarantees across diverse payment workflows.
Microservices Migration
2023–2024Architected and delivered multiple microservices to migrate critical business workflows out of a legacy monolith, leveraging both synchronous (REST) and asynchronous (Kafka) communication. Incorporated circuit breaker, retry, and throttling patterns to achieve resilience under peak financial-market traffic.
Open API Platform
2022Developed and published multiple cursor-paginated Open APIs adhering to RESTful standards and OpenAPI Specification, enabling third-party vendor data integrations at Saxo. APIs handle high-volume transactional data with optimized SQL Server stored procedures.
Bachelor of Technology — Computer Science
Lovely Professional University
Phagwara, Punjab
Class XII — CBSE
DAV Public School
Meerut, Uttar Pradesh
Class X — CBSE
SK Academy Public School
Meerut, Uttar Pradesh
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Open to new opportunities — whether it's a senior backend role, a challenging distributed systems problem, or a conversation about architecture and engineering craft.
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