# Khawja Tahir

Khawja Tahir is a remote worker on Himalayas, Senior Software Engineer at Expert System Solution, based in Pakistan.

Source: https://himalayas.app/@khawjatahir

```text
Senior Software Engineer at ExpertSystemSolution building secure payment systems and LLM-powered applications with Go, Python, and AWS.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Pakistan |
| Authorized to work in | Pakistan |
| Salary expectations | 30k+ USD |
| Job categories | Software Engineer |
| Skills | Go, Backend Development, Microservices, Distributed Systems, REST APIs, gRPC, PostgreSQL, AWS, LLM, RAG, Python, React, TypeScript, Payment Systems, ACH processing |
| LinkedIn | https://linkedin.com/in/khawja-tahir-dev |
| GitHub | https://github.com/KhawjaMTahir |

## What I'm looking for

```text
I’m seeking opportunities to leverage my technical expertise and drive impactful product development.
```

## About

```text
At ExpertSystemSolution, I design secure payment solutions that integrate banking APIs, ACH processing, and cryptocurrency transactions. I also develop backend services and REST/gRPC APIs using Golang, Python, PostgreSQL, and AWS.

I’ve designed LLM-powered applications, including AI assistants and document-processing workflows, and built scalable microservices with Golang. My work also includes React and TypeScript dashboards for operational visibility.

At CodeTech, I developed real-time multiplayer gaming features with Golang and Nakama, automated CI/CD pipelines, and contributed to RAG systems using vector databases and knowledge retrieval pipelines. My projects include fintech payment platforms, blockchain infrastructure, and real-time communication and gaming applications.
```

## Experience

### Senior Software Engineer (current)

Expert System Solution. Sep 2022 - Present

```text
Designed and implemented secure payment solutions integrating banking APIs, ACH processing, and cryptocurrency transactions. Developed high-performance backend services and REST/gRPC APIs using Golang, Python, PostgreSQL, and AWS.
```

Skills: Go, Python, PostgreSQL, AWS, REST-APIs, gRPC, Microservices, LLM, RAG, React, TypeScript

### Senior Golang Developer

CodeTech. Jan 2020 - Aug 2022

```text
Developed real-time multiplayer gaming features using Golang and Nakama. Automated CI/CD pipelines for deployments on AWS, Google Cloud, and DigitalOcean, and built interactive dashboards with React and TypeScript.
```

Skills: Go, Nakama, React, TypeScript, CI-CD, AWS, Google-Cloud-Platform, DigitalOcean, RAG, Vector-Databases

### Software Engineer

ArhamSoft. Apr 2017 - Dec 2019

```text
Developed and maintained scalable backend services and RESTful APIs using Golang. Integrated third-party APIs, worked with PostgreSQL/MySQL for database design and optimization, and implemented unit and integration tests.
```

Skills: Go, REST-APIs, PostgreSQL, MySQL, Git, Docker, CI-CD, Agile, Unit-Testing

## Education

### University of Engineering and Technology

Bachelor of Computer Science, Computer Science. 2013 - 2017

```text
Bachelor of Computer Science degree from the University of Engineering and Technology, Lahore, from 2013 to 2017.
```

## Tech stack

- Blockchain
- DigitalOcean
- GitHub
- Kubernetes
- MySQL
- PostgreSQL
- MongoDB
- CockroachDB
- Redis
- React
- JavaScript
- Python
- C++
- Rust
- Kafka
- RabbitMQ
- Echo
- Stripe
- PayPal
- gRPC
- AWS Lambda
- TypeScript
- Git
- Docker
- Nakama
- Retrieval-Augmented Generation (RAG)
- Golang
- AWS
- REST APIs

To contact Khawja, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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