Antreas Leonidou

Antreas Leonidou is a Cypriot computer-science student at Rice University (2025-2029) and a competitive programmer who represented Cyprus at the International Olympiad in Informatics in 2023 and 2024, earning an Honourable Mention in 2024. He completed a 10-week Software Engineering internship at Two Sigma, a New York-based systematic/quantitative investment manager, in summer 2026. He is machine learning and AI lead for LIVIA, a Cypriot agritech startup that won the European Innovation of the Year award at Gen-E 2026. Earlier roles include an undergraduate radar-software research position at Rice ECE, ~14 months as a Reserve Second Lieutenant in the Cypriot National Guard, and competitive-programming instruction for the Cyprus Computer Society.

Notes14

• Quant employment verification: CONFIRMED. Antreas Leonidou completed a paid 10-week Software Engineering Internship at Two Sigma in New York in summer 2026, which he announced and confirmed on LinkedIn ('I recently wrapped up my 10-week Software Engineering Internship at Two Sigma'). Two Sigma is a New York-based systematic/quantitative investment manager (hedge fund), so the employer is genuinely a quantitative-finance firm even though the role itself was software engineering, not a quant-research or trading seat. Identity is supported by three independent profiles: the IOI official statistics page (Cyprus contestant Antreas Leonidou, IOI 2023/2024), his Codeforces handle ALeonidou (Nicosia, Cyprus; Rice University), and the LinkedIn profile /in/aleonidou whose headline reads 'Prev SWE @ Two Sigma | CS @ Rice | HM in IOI 2024'. Note: the enrichment index's 'is_current: true' flag on the Two Sigma role is stale index-only data and is NOT evidence of current employment; no other quant/trading/hedge-fund employer appears in his record.Aug 2026
• Two Sigma internship: Antreas Leonidou posted 'I recently wrapped up my 10-week Software Engineering Internship at Two Sigma' and earlier 'Excited to share that I'll be joining Two Sigma as a Software Engineer Intern in New York this summer' - a real paid SWE internship at a systematic/quantitative investment manager, completed summer 2026.Aug 2026
• LinkedIn headline now reads 'Prev SWE @ Two Sigma | CS @ Rice | HM in IOI 2024', i.e. the Two Sigma internship is in the past, while the enrichment index still flags it 'is_current: true' - the index is stale on this point and should not be read as current employment.Sep 2026
• Two Sigma is a New York-based systematic/quantitative investment manager (hedge fund); the role held was Software Engineering, not a quant-research or trading seat, so the quant-finance link is via employer classification, not job function.Aug 2026
• Serves as machine learning and artificial intelligence lead for LIVIA, a Cypriot agritech startup using AI, autonomous drones and satellite imagery for crop monitoring.Jul 14, 2026
• LIVIA won the European Innovation of the Year award at Gen-E 2026 in Riga and the FedEx Access Signature Award, after winning the JA Cyprus Company of the Year competition in April 2026 - the highest-profile public achievement attached to his name.Jul 14, 2026
• Current role: Undergraduate Researcher (Radar Software) at Rice University Electrical and Computer Engineering (2026-), modernizing a legacy high-frequency radar data-acquisition pipeline in Python/MATLAB and building Python 3D point-cloud visualization tools.2026
• Public email [contact omitted] listed in his own LinkedIn/GitHub-linked bio.2026
• IOI 2024 (Egypt): represented Cyprus, scored 151.81 (25.30%), rank 260/353, awarded Honourable Mention - his second IOI after 2023 (80.0 pts, 267/350), establishing him as one of Cyprus's strongest competitive programmers.Sep 2024
• No evidence found of any role at a quant trading firm other than Two Sigma; no banks, asset managers, energy or crypto trading roles surfaced in search or on his LinkedIn/GitHub.Sep 2026
• GitHub ALeonidou2005 (created 2019, 7 public repos, 10 followers) bio: 'CS @ Rice University - SWE, CP, ML, AI'; lists employer Two Sigma and location Cyprus, cross-linking his LinkedIn in/aleonidou.2026
• Military service: served ~14 months as an Officer Cadet / Reserve Second Lieutenant in the Cypriot National Guard (2024-2025), ranking 10th nationally in officer cognitive and writing examinations - explains the gap year between The G C School (to 2024) and Rice (from 2025).2025