Md. Kawsar Ahmed

Dec 2024 — Present

• Architected and deployed internal tools and infrastructure improvements, reducing workflow execution time by 40–50% and improving team productivity across all departments.
• Built a Real Estate Tenant Management System with envelope encryption (KEK/DEK), idempotency mechanisms to eliminate duplicate payments, and fuzzy matching reducing duplicate file uploads by 70%; implemented support ticket system with Socket.IO + Redis Pub/Sub, video conferencing via LiveKit/WebRTC, and file storage via Google Drive OAuth and MinIO.
• Developed Career Portal handling 1,200 applications in 3 days with 80% reduction in manual workflow; currently building a multi-tenant CRM platform using Turborepo.
• Optimized caching layer with Redis and TanStack Query, improving website loading performance from 1.3s to 0.2–0.4s; containerized all services with Docker for consistent deployment.
• Engineered custom storage server infrastructure reducing cloud storage costs by 76% and deployed VPN server for secure internal VPS/server access.
• Led a team of 7 developers across multiple projects with focus on system design and technical architectural decisions.

Mid-contest server crash · debugged, rate-limited, and restored the platform

• During the Prompt Engineering contest, our server crashed under contest traffic — participants were mid-submission and the clock was running.
• Led end-to-end debugging: traced load spikes, stabilized services, and added rate limits so the API could survive burst traffic without falling over again.
• Spun up redundant hosting across the university server room and a Hostinger VPS, routed traffic, and brought the platform back online so the segment could finish.
• Coordinated with faculty and volunteers on status updates so teams knew what was happening instead of guessing.

Root compromise · mining malware removed · WireGuard VPN + SSH key access only

• Our office VPS was hacked — an attacker had access and started crypto mining on production infrastructure.
• Contained the breach: killed malicious processes, audited running services, rotated credentials, and verified no persistence mechanisms were left behind.
• Disabled root SSH login, created a dedicated deploy user with least privilege, and locked down sudo to what operations actually need.
• Stood up a WireGuard (wg) VPN server — team access to the VPS runs through a WireGuard tunnel only, with SSH public/private key auth and no password logins or wide-open port 22 on the public internet.

MongoDB port exposed to the internet · full data recovery

• A junior developer accidentally left MongoDB publicly accessible — the database port was open to the world instead of bound to localhost or a private network.
• Detected suspicious access patterns, locked down firewall rules immediately, and closed every path that shouldn't have been reachable from outside.
• Recovered all data from backups and verified integrity before bringing services back — no silent corruption, no guessing about what was lost.
• Documented the fix, added checklist gates for deploys, and walked the team through why exposed database ports are a production incident, not a small mistake.

2024 — Present

Twice-weekly tech round-tables · 40 attendees on average

• Host open engineering discussions on system design, shipping, and career growth for club members.
• Built a consistent format: one topic, one demo, one debate — keeps sessions practical, not slide-heavy.

2024 — Present

Coached 102 students to ship 6 campus modules

• Designed the intern track: repo standards, PR reviews, and weekly ship checkpoints.
• Mentored squads from idea → MVP → handoff to faculty/student users.

2025

Fall Fest hackathon track · Problem setter & on-floor mentor

• Coordinated the 24-hour hackathon for Fall Fest — scheduling, judging, and participant support.
• Authored challenges that reward real engineering — APIs, data modeling, and time-boxed trade-offs.
• Mentored teams on architecture and scope so they could ship a working demo within the contest window.

2026

Spring Fest hackathon · Coordinator & mentor

• Led hackathon coordination for Spring Fest alongside IUPC, typing contest, and ICT quiz programming.
• Problem setter for the hackathon track; coached teams on scope and demo-ready deliverables.
• Worked with faculty to plan and execute the segment for 600+ fest participants.

2026

Prompt Engineering segment · Coordinator & problem author

• Designed and ran the Prompt Engineering track — briefs, rubric, and live mentoring during the contest.
• Crafted problems that test practical LLM workflows — chaining, evaluation, and clear success criteria.
• Mentored participants on prompt design and presenting working solutions within the time limit.

2024 — Present

• Launched the Software Intern Program, coaching 102 students to ship 6 software modules for the campus.
• Hosting twice-weekly "Engineering Adda" tech round-tables (avg 40 attendees), boosting club retention.
• Organized a 24-hour hackathon for 51 teams (196 participants); managed logistics end-to-end, earning a 90% participant NPS.
• Developed the Internal Management System and the mail server for the club.

2025

• Coordinated the 24-hour hackathon segment for Fall Fest — logistics, judging flow, and participant support.
• Authored problem statements and mentored teams on architecture, scope, and shipping under time pressure.
• Worked with faculty and club leads to execute the track end-to-end for 600+ fest participants.

2026

• Led hackathon coordination for Spring Fest — registration, venue flow, and mentor rotations during the contest.
• Problem setter for the hackathon track; coached teams on APIs, data modeling, and demo-ready scope.
• Helped deliver IUPC, typing contest, and ICT quiz programming alongside the main hackathon segment.

2026

• Designed and ran the Prompt Engineering segment — challenge briefs, rubric, and live mentoring.
• Crafted problems that reward practical LLM use — chaining, evaluation, and time-boxed trade-offs.
• Mentored participants on prompt design, tool choice, and presenting working solutions within the contest window.

2024

• Bus Tracker: real-time tracking for 12 buses with live map and ETA for students and admins.
• Treasurer Branch Reconciliation: automated matching of bank statements and student payments with instant mismatch alerts and ready-to-sign reports.
• Alumni Portal: a secure platform for graduate profiles, updates, and networking to enhance alumni engagement.
• MCP Server: central info agent aggregating live academic, finance, and transport data for quicker decision-making.

2022 — 2026

Bangladesh Army International University of Science and Technology (BAIUST), Cumilla

B.Sc in Computer Science and Engineering (Data Science Major)

Result

CGPA: 3.02

Thesis

“Voice-based Emotion Recognition”

2021

Cumilla Collectorate School and College, Cumilla

Higher Secondary Certificate (HSC) · Science

Result

GPA: 5.00

2019

Chauddagram HJ Model Pilot Govt High School, Cumilla

Secondary School Certificate (SSC) · Science

Result

GPA: 4.50