SDE-II · Backend Engineer · Software Developer

Backend Systems Built For Production

Hi, I'm Saif Hussain Ansari — an SDE-II focused on scalable APIs, distributed systems, databases, and cloud infrastructure.

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About Me

I'm a backend-focused software engineer with several years of experience building and maintaining production applications and backend systems.

My primary experience includes Python, Django, Node.js, NestJS, Laravel, PostgreSQL, Redis, Docker, AWS, and Kubernetes.

I've worked across different areas including:

I care about writing software that is simple, performant, observable, and easy to maintain. Currently, I'm working as an SDE-II at Alt Mobility, where I work on backend systems, microservices, integrations, infrastructure, and production engineering.

Proficiencies

Backend

Python · Django · FastAPI · Node.js · NestJS · Laravel · PHP

Databases

PostgreSQL · MongoDB · Redis · DuckDB

Cloud & Infrastructure

AWS · EC2 · RDS · S3 · ECR · ECS · GKE · Docker · Kubernetes · Helm

Observability

Prometheus · Grafana · Loki · Promtail

Development

REST APIs · Microservices · JWT · Webhooks · Third-party Integrations · Background Jobs · Cron · CI/CD

Frontend

React · Next.js · Vue.js · JavaScript · HTML · CSS

Tools

Git · GitLab CI · Prisma · Nginx · Linux

Experience

SDE-II @ Alt Mobility

Working on backend systems and production infrastructure for mobility and fleet-management products.

Responsibilities

  • Design and develop scalable backend APIs and microservices.
  • Build and maintain production services using Python, Node.js, NestJS and PostgreSQL.
  • Work with AWS, Docker, Kubernetes and cloud infrastructure.
  • Design database schemas, queries and data-processing workflows.
  • Optimize PostgreSQL queries and backend workloads.
  • Implement integrations with external APIs and services.
  • Work with Redis for caching and high-frequency workloads.
  • Build monitoring and observability using Prometheus, Grafana and Loki.
  • Debug production issues across application, database and infrastructure layers.
  • Work on CI/CD and containerized deployments.
  • Collaborate with product, frontend and engineering teams to deliver production features.

Things I've Built

Battery Diagnostic Platform

A backend platform for battery diagnostics and testing.

Node.js · Next.js · Prisma · PostgreSQL · JWT · AWS · Loki

Key Components

  • Battery Detail API
  • Start Battery API
  • Run Test API
  • Test Detail API
  • Test Results API
  • Authentication and authorization
  • Production logging and observability

Fleet & Mobility Backend Systems

Production backend systems supporting fleet and mobility operations. Worked on APIs, services, databases, integrations, reporting systems, background jobs and infrastructure powering operational workflows.

Python · Django · Node.js · NestJS · PostgreSQL · Redis · AWS · Docker · Kubernetes

Travlofreak

A travel booking platform focused on airline and travel-related workflows.

Python · Django · APIs · PostgreSQL · React

IoT & Webhook Services

Backend services responsible for processing device and IoT events and integrating them with downstream systems.

Node.js · APIs · Webhooks · PostgreSQL · Docker · AWS · Loki

Engineering Interests

Currently Learning & Exploring

Rust · Systems Programming · Distributed Systems · Advanced System Design · AI Engineering

I enjoy going below the framework level and understanding how systems actually work — from HTTP servers and databases to operating systems, networking and distributed workloads.

Contact

I'm always interested in interesting engineering problems, backend systems, and opportunities where I can build things that operate at scale.

Let's build something useful.

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Designed & Built by Saif Hussain Ansari