Shiwei (David) Sun

About

I'm a graduate student in Computer Science at the University of Calgary, advised by Dr. Rei Safavi-Naini at the ESPRI Lab. My work sits at the intersection of distributed systems, applied cryptography, and production AI infrastructure. I like building things that are provably correct and actually run in production.

Expected graduation: Summer 2026. Open to full-time software engineering and applied research roles.

Experience

• Research Engineer, Aspire Technology Inc. · Jan 2024 – Mar 2025

  Built a BESS (battery energy storage) optimization engine in Python + Gurobi MILP for a 2 MW / 3.8 MWh liquid-cooling C&I site. Identified configurations that reduced ROI payback from 9 to 5 years, and co-designed a multi-layer dispatch architecture integrated into the production EMS.

• Research Assistant, ESPRI Lab, University of Calgary · Sept 2021 – Present

  Information-theoretic security, applied cryptography, IoT privacy. Building probabilistic simulation frameworks and cryptographic protocol prototypes.

• Teaching Assistant, University of Calgary · Sept 2021 – Present

  Information Theory, Data Structures & Algorithms, Security & Privacy. Mentored 150+ students. TA Recognition List honoree.

Selected Projects

• tinyclaw-infra · 2026 – Present

  Production infrastructure layer for TinyClaw (3.5K+ stars, open-source multi-agent AI runtime). Provides persistent message delivery (Redis Streams), containerized deployment (Docker), observability, and access-controlled multi-agent communication for unattended 24/7 operation. Designed in collaboration with upstream maintainers.

• Secure Multipath Transmission · 2023 – Present

  Fault-tolerant secure multipath framework combining threshold secret sharing with Reed–Solomon error correction; configurable ≥95% reliability SLO. DP-based combinatorial search over 10⁶+ candidates in under 40 s; end-to-end validated by 100K-trial Monte Carlo simulation (< 0.01 error). Parameter sweeps parallelized on Slurm HPC.

• Privacy-Preserving IoT Onboarding · 2025

  Zero-touch provisioning prototype compatible with Google Enrollment Service for smart-building IoT. Five cryptographic modules (BBS Group Signatures, EC-ElGamal, EC-VRF, Schnorr ZKP, ECDSA) with sub-20 ms end-to-end token operations under a 1,000-iteration benchmarking harness.

Publications

• First-authored paper on secure multipath transmission (thesis, in preparation), 2026.
• Co-authored paper on privacy-preserving IoT onboarding (under review), 2025.

Education

• MSc Computer Science (Thesis-based, Fully Funded), University of Calgary · Exp. May 2026

  GPA 3.9 / 4.0. Advisor: Dr. Rei Safavi-Naini.

• BSc Computer Science (First-Class Honours), University of Calgary · 2021

  GPA 3.9 / 4.0. Dean's List.

Honours & Awards

• Golden Ticket Winner, QAI Ventures Global Hackathon — optimization prototype for grid-connected battery dispatch, 2025.
• Departmental Research Award ($11K), International Student Tuition Award ($12K), Continuing Undergraduate Award ($5K), Dean's List.