Angus Ritossa

UNSW computer science/mathematics student and IOI medallist (gold 2019, silver 2018). Co-founder of RaceHUB; undergraduate research intern in computational social choice (co-author, AAMAS 2023). Tutoring and olympiad-training roles at UNSW and the Australian Maths Trust. Career history includes olympiad, academic and software roles; an index-listed Optiver software developer internship (2021-2022) is the sole quantitative-finance lead and is not corroborated by a primary source.

Notes4

• Quant employment verification: UNRESOLVED. Angus Ritossa's identity is supported by primary and independent sources: IOI statistics list him as an Australian IOI contestant (silver 2018, gold 2019) and Australian team Deputy Leader 2020-2023, the UNSW ICPC team news names him, and his GitHub account (github.com/AngusRitossa) and AAMAS 2023 co-authorship corroborate the same individual. The only quantitative-finance employment lead is a 'Software Developer Internship' at Optiver (Sydney, Nov 2021 - Feb 2022), which appears ONLY in the enrichment index/aggregator via the supplied LinkedIn profile; no primary Optiver page, press item, or independent source found in this research names him, so it is not primary-source confirmed. No other trading, market-making, hedge-fund, or quantitative-finance employer appears in any source. Employer classification: Optiver is a proprietary market-maker/options trading firm and does operate in quantitative finance; the classification is confirmed for the employer, but the person's role remains index-derived. Student programs and competitions do not establish employment. Verdict UNRESOLVED until the Optiver internship is corroborated by a non-index source.
• Listed as 'Software Developer Internship' at Optiver, Sydney (2021-2022) on the enrichment index; this is an index statement and not yet corroborated by a primary Optiver source.Nov 2021
• Undergraduate research internship ('Taste of Research') at UNSW in Computational Social Choice supervised by Haris Aziz; co-authored the paper 'Fair Allocation of Two Types of Chores' (AAMAS 2023). [enrichment/index-only, not primary-source confirmed]2022
• Competed for Australia at the International Olympiad in Informatics in 2018 (silver medal) and 2019 (gold medal), per the competitive-programming hall-of-fame timeline.
• Identity verified: IOI statistics profile for Angus Ritossa (Australia) records silver 2018 and gold 2019 and Deputy Leader 2020-2023, matching the supplied lead.
• Identity verified independently: UNSW news names Angus Ritossa as a member of the UNSW ICPC World Finals 2023 team, matching the submitted LinkedIn/GitHub identity.
• Optiver is a proprietary trading firm and market-maker (options/derivatives), i.e. a genuine quantitative-finance employer - classification confirmed for the company, not for a specific role by this person.
• Co-authored 'Fair Allocation of Two Types of Chores' (Aziz, Lindsay, Ritossa, Suzuki), AAMAS 2023 - a real, listed publication matching the UNSW research internship.2023
• Served as Deputy Director of Training for the Australian Informatics Olympiad Committee at the Australian Maths Trust and Deputy Leader of the Australian IOI team in 2022.2022
• Awarded the UNSW School of Computer Science and Engineering 'Most Outstanding CSE Thesis Prize'.
• Co-authored work presented at ACM EC 2025 (SIGecom main technical program) with UNSW Sydney affiliation.2025
• Authored 'Algorithms and hardness for multidimensional range updates and' with Joshua Lau (UNSW), listed in the ITCS 2021 program - a second peer-reviewed technical publication.2021