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System Integrity · AI Validation · Technical Instruction

Sagar Kumar

QA Engineer — AI|Online Instructor

  • Validating LLM outputs & AI system integrity from day one
  • 200+ test cases · 95%+ coverage · zero compromise on quality
  • Real-time multilingual translation testing across 4+ language pairs
  • Improving system reliability through structured validation and review
  • Teaching O & A-Level students to build strong foundations in tech
  • Validating LLM outputs & AI system integrity from day one
  • 200+ test cases · 95%+ coverage · zero compromise on quality

Specializing in software testing and QA for modern systems, including AI-driven applications, LLM outputs, and real-time multilingual translation frameworks, while also mentoring the next generation of technical learners.

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About Me

AI QA Engineer LLM Validation RTT Testing Online Instructor

Hi — I'm a QA Engineer focused on ensuring quality and reliability across modern software systems, working at the intersection of quality engineering and emerging technologies.

My day-to-day work involves testing LLM-based chatbot pipelines and real-time multilingual translation systems, identifying issues beyond standard validation checks. I approach quality as an ongoing discipline rather than a final checkpoint, covering everything from system behavior to backend data integrity.

Alongside my QA career, I've been running live programming instruction for O & A-Level students since 2022 — turning abstract CS concepts into confident, hands-on coders.

✓Functional, regression, and exploratory testing across AI-driven applications
✓LLM output validation — prompt adherence, context handling, and edge-case analysis
✓Real-time translation (RTT) system testing across 4+ language pairs.
✓API validation using Postman; & performance checks under varying traffic conditions
✓Database-layer verification — schema logic, transactional integrity, SQL/Postgres.
✓Teaching programming fundamentals to O/A-Level students

Looking for QA expertise for your AI product or a tutor for your students? Let's connect →

Sagar Kumar

Technical Skills & Tools

Testing Core

Methodologies & execution types

Manual / FunctionalRegression Suite API ValidationSmoke / Sanity Usability MatrixSDLC / STLC / Agile

AI & Advanced QA

Next-gen capabilities

LLM ChatbotsRTT Translation Speech-To-TextEdge-Case Mining Root Cause Diagnostics

Automation Engine

Framework & CI paths

Selenium WebDriverPlaywright GitHub Actions CIGit Version Control

Tools & Stack

Daily operational stack

Postman APIJIRA Apache JMeterTestRail SQL / MySQL / PostgresPython / Java / C++

Experience

Software Engineer — QA

Ibex. Pakistan

Jun 2025 — Present
  • Designed and executed 200+ test cases across web applications and high-traffic AI systems, maintaining 95%+ test coverage
  • Validated LLM outputs, data pipeline flows, and real-time translation (RTT) layers, achieving 98% multilingual accuracy tracking
  • Performed API testing using Postman to ensure functional correctness and system reliability
  • Logged, categorized, and tracked defects using JIRA and TestRail, supporting structured bug lifecycle management

Software Analyst

Ibex. Pakistan

Oct 2024 — Jun 2025
  • Translated business requirements into clear and testable acceptance criteria for development and QA teams
  • Performed functional and regression testing across multiple modules to ensure system reliability and stability
  • Identified edge cases and potential defects through structured test execution before production release
  • Analyzed system behavior to trace root causes of defects and prepared structured reports for development handover

Online Instructor (IT & Programming)

Self-Employed (Remote)

2022 — Present
  • Deliver live programming instruction to O & A-Level students, focusing on OOP and core computer science concepts
  • Design practical coding exercises in Python and Java to strengthen logical thinking and problem-solving skills
  • Mentor students through structured learning paths

Information System Audit Intern

Summit Bank Limited

Jun 2023 — Aug 2023
  • Assisted in information system audits for core banking applications aligned with regulatory and compliance standards
  • Reviewed database structures including transactional integrity, authorization controls, and security boundaries
  • Supported audit teams in identifying system risks across SQL/MySQL environments

Achievements & Certifications

   Certifications, awards, and career milestones

10Pearls University

QA Fundamentals

Foundational training in software quality assurance, validation design, and bug tracking principles.

IBM Cybersecurity

IBM

Cybersecurity Fundamentals

Comprehensive coverage of digital threat footprints, cryptography vectors, and cloud access monitoring.

Database Competition

Spectrum '23

Database Design — 3rd Place

Awarded 2nd Runner Up for architecting normalized relational schemas under fast-paced competition constraints.

Dean's List

DHA Suffa University

Dean's List — Spring 2024

Academic Excellence Award — 3.79 term CGPA for outstanding academic dedication.

Lecturer

Academic Instruction

Lecturer — My Hope School

Recognised for delivering structured digital education tracks, breaking down data models and programming for students.

Student Performance Records

   Student performance records highlighting academic progress across classes.

Result 1

Result Record — 01

Result 2

Result Record — 02

Result 3

Result Record — 03

Result 4

Result Record — 04

Get In Touch

Let's Work Together

Contact Channels

Have a QA challenge, an AI system that needs validation, or looking for a technical instructor? Let's connect.

Email

SagarKumar54034@gmail.com

Phone

(+92) 334 2591620

Location

Karachi, Pakistan