Gill's career spanned testing, tooling and senior engineering roles at studios including Software Creations, ZedTwo, Bizarre Creations and Cloud Imperium, where he served as a UI engineer and tech director on Star Citizen.
Gill began in games as a tester at Software Creations.
According to his LinkedIn profile and colleagues, he built SNES development kits and cartridges and ran the company's bulletin board system.
Early credits include the Nintendo-published rail shooter Tin Star (1994) and work on a cancelled 16-bit Barbie title, Barbie: Vacation Adventure — the latter of which is scheduled for its first commercial release later this year and had been a recent point of excitement among his peers.
In 1997 Gill left Equinox/Software Creations-era projects to become a founding member of ZedTwo.
There he programmed games such as Taz Express, Wetrix and Aqua Aqua, and worked on the unreleased E.T.: Search for Dragora.
He remained with the team through Warthog's acquisition, contributing to the Gizmondo title Stickyballs.
In 2005 Gill moved to Bizarre Creations, where his credits include Project Gotham Racing 3 and 4, The Club, Blur and 007: Blood Stone.
Later positions included TT Fusion and Lucid Games before his tenure at Cloud Imperium.
Colleagues remembered Gill for both his technical skill and personality.
Longtime friend and former line manager Chun Wah Kong recalled that Gill quickly became a trusted teammate, noting that the pair and others playtested Tin Star and Barbie together during the 1994 testing period and that Gill soon transitioned from QA into programming.
Dan Curley, another former colleague, reflected that the department's early chaos belied the talent in that team and said he was proud to see Gill rise from testing to a director-level role at Cloud Imperium.
Curley also described how recent shared experiences — including getting sober together — deepened their friendship in Gill's final years.
Other former coworkers echoed those sentiments.
Ex-Software Creations programmer Kevin Edwards described Gill as friendly, fun and knowledgeable.
Carleton Handley called him "one of the finest coders" he'd worked with at ZedTwo, while environment artist David O'Reilly remembered Gill as a well-liked and skilled developer during their time at Bizarre Creations.
Friends shared personal recollections of Gill's enthusiasm for retro hardware and games; when the long-shelved Barbie title was announced for modern platforms, Gill reportedly sought out an SNES copy he could actually own and play.
Plans to visit arcade venues were curtailed by his chemotherapy and immunodeficiency, but those close to him said he remained engaged with gaming history and the community.
Gill's passing drew condolences across social platforms and from former teams.
His friends at Time Extension and colleagues across the industry expressed sympathy to his family and loved ones as they remember a developer whose career touched consoles, handhelds and ambitious modern projects alike.