Abdullah Al Mamun, PhD
8+ Years of Experience · Permanent Resident (no visa sponsorship required)
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Technical Skills
ML / AI
LLMs · Fine-tuning (LoRA, QLoRA, SFT) · RLHF, PPO, DPO · RAG · Agentic AI · Multi-Agent Systems · Transformers · Quantization · 4D Parallelism · KV-Cache · LangChain · LangGraph · Intent Classification · NL2JQL · Offline Eval Pipelines
Domain
Search Ranking (Jira / Confluence) · FPS Intent Detection · SAIN (Smart Answer Intelligence) · Ads Ranking · Recommendation Systems (RecSys) · Conversational AI · Knowledge Discovery
Engineering
Python · PyTorch · TEAMServe (ML model serving) · Statsig / Switcheroo (feature flags) · A/B Experimentation · Docker / Kubernetes · CI/CD · AWS · Databricks · Socrates (SQL)
Professional Experience
Senior Machine Learning Engineer
Atlassian · Mountain View, USA
Sep 2025 – Present
- Replaced GPT-4o-mini with fine-tuned Llama-3.2 1B for Jira/Confluence search intent detection — $1M CAPEX savings/year.
- Built RL-based fine-tuning pipeline for SMART Answer generation — 20% coverage improvement.
- Engineered ML-based Jira intent classifier (replacing rule-based heuristics) with multilingual support for global Jira users — 17% increment in query success.
Machine Learning Engineer
Aisera Inc · Santa Clara, USA
Jun 2024 – Sep 2025
- Built end-to-end scalable multi-agentic architecture for enterprise AI — driving ~$3.4M estimated ARR.
- Fine-tuned LLaMA 3 and deployed on AWS — reducing $4M in CAPEX vs. GPT-4.
- Integrated RAG into conversational AI, enhancing real-time semantic search by ~93%.
Machine Learning Engineer
Meta · Menlo Park, USA
May 2022 – Jun 2024
- LLM in Ads Creation: Fine-tuned LLaMA 3 (SFT, RLHF, KV-Cache, 4D parallelism, quantization, distillation) — 13% CTR ↑, 6% CVR ↑, ~$497M iRev.
- Personalized Ads Recommendations: AutoCA clusters for ad ranking via targeting relaxation — 0.1% iRev improvement, ~$109M.
Research Assistant (AI / ML)
ML & Data Analytics Lab (MLDAG), FIU · Miami, USA
Sep 2018 – Apr 2022
- End-to-end development of interpretable deep learning models for early cancer detection and drug recommendation.
Research Assistant (ML)
Research & Innovation (RI), KFUPM · Saudi Arabia
Jan 2015 – Dec 2016
- Implemented LSTM-based sentiment analysis tool for customer feedback — 98% accuracy.
Education
PhD in Computer Science
Focus: Interpretable Applied ML
MS in Computer Engineering
Focus: ML / Robotics in Computer Vision
BSc in Computer Science & Engineering
Focus: ML in NLP
Certifications
- Google — End-to-End Machine Learning with TensorFlow on GCP · Mar 2020
- UIUC — Cloud Computing Concepts: Part 1 & 2 · Apr 2015
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<h2 class="resume-section-title">Awards & Honors</h2>
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<strong>Champion, 2nd GCC Robotics Challenge</strong>
<p class="muted">IEEE & IET · Doha, Qatar · 2017</p>
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<strong>Conference Travel Fellowships</strong>
<p class="muted">ACM BCB NYC (2019) · IEEE BIBM San Diego (2019, 2020)</p>
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