I am Nrishinghananda Roy, a software engineer focused on building backend systems in Rust.
My work centers on concurrent backend services, internal automation systems, and cloud infrastructure built with Rust, PostgreSQL, and AWS.
I enjoy working with startups building infrastructure heavy products where performance, reliability, and concurrency are essential parts of the system.
My work focuses on improving system performance, reducing operational overhead, and building reliable infrastructure that teams can depend on.
Rebuilt a performance critical Java microservice in Rust, transforming the core API used in high frequency workflows. The migration reduced p95 latency from over 3 seconds to under 200ms, delivering a far more responsive and predictable system under load.
Architected and implemented a concurrent document generation microservice in Rust using the lopdf and docx-rs libraries, replacing a collection of Python scripts with a reliable service capable of filling templates, generating PDF and DOCX documents, and programmatically placing images such as signatures using page coordinates.
Provisioned and managed distributed infrastructure across more than 60 nodes using AWS and Terraform, introducing Infrastructure as Code, centralized monitoring with Prometheus and Loki, and automated deployments through GitHub Actions.
I architect and build backend services in Rust using frameworks such as Axum and the Tokio async runtime. My focus is software that remains predictable under load, handles concurrency safely, and stays easy to maintain in production environments.
I work with distributed infrastructure where monitoring, logging, and failure handling are essential. My experience includes setting up observability stacks, monitoring node health, and maintaining reliable deployments across multiple environments.
I try to understand the product and business context behind the systems I build. This allows me to take ownership of features end to end, make practical technical decisions, and deliver work that aligns with real product goals.
I work comfortably with ownership and minimal supervision. Once the problem is clear I plan the implementation, communicate progress, and deliver reliable solutions without constant hand holding.
I work with cloud infrastructure using AWS, Terraform. This includes building reproducible environments, deploying containerized workloads, and keeping systems observable and manageable as they scale.
I approach infrastructure with a security and reliability mindset. This includes secure cloud configuration, careful access control, and building systems that can recover cleanly from failure.
Freelance | Remote
Codefy GmbH | Remote, Germany
Dhiway | Remote, India
Trustforum | Remote, France
Engineered a persistent Key-Value storage engine from scratch in Rust. Replaced traditional database wrappers with a custom engine built strictly on zero-cost abstractions, multi-level compactions, and an arena-allocated SkipList.
Shipped to App Store in weeks with zero prior mobile experience. Handles festival info, real-time volunteer management, and role-based auth. 100+ downloads.