Marcus Neves / software · data · AI

Three decades shipping production systems.Now building AI-native software

I build software, data systems, developer tools, and AI products for real-world constraints.

Selected work GitHub

mn@dev — session

$ mn --status

shipping30 years

projects27 public

open_src10 repos

stacktypescript · swift · rust · astro · cloudflare

focusAI-native software

$ ls work/ --featured

dnschat ai-health-sync ffts-grep open-profile-manager llmdeepdive msx-expert-xp800

> 6 featured → all work

30years in production

27public projects

10open source

01 / proof

Selected work

Projects are the evidence. Start with the constraint.

01DNSChatChat with an LLM over DNS TXT queries.AI / NETWORKS 02AI Health SyncHealthKit data moves from iPhone to Mac over the local network.PRIVACY / HEALTH 03ffts-grepFast full-text file search using SQLite FTS5 and BM25 ranking.RUST / SEARCH 04Open Profile ManagerA local-first launcher for explicit Codex profiles on macOS.MACOS / OPERATIONS 05llmdeepdiveA free bilingual course that keeps going past the analogy.TEACHING / AI 06Gradiente Expert XP-800A procedural 3D reconstruction of a 1985 Brazilian MSX with a working emulator.3D / EMULATION

See all work

02 / operating system

How I think

Principles are useful when they change what gets built.

01Ship beats perfect.

02Clarity over cleverness.

03Privacy is baseline, not feature.

04Mobile-first is not optional.

03 / range

Engineering range

Breadth is useful when it changes the decision.

Software engineering

Systems that survive contact with reality.

Data & analytics

Evidence, not decorative dashboards.

AI systems

Models inside useful constraints.

Mobile & local-first

The device is often the right boundary.

Cloud & edge

Deployments with guardrails.

04 / evidence

Trusted to lead. Still hands-on.

Recommendations from people who worked with Marcus.

[01]

For everyone who’s seen Pulp Fiction, Marcus is like this guy Wolf. He is basically the guy who arrives, draws the plan and solves the problem. Extremely pragmatic, focused and business-oriented, Marcus is one of the most perspicacious persons I know. He’s a great leader and very wary about transmitting feedback. He’s one I will always be available to work with.

Décio Sousa — Former colleague

[02]

Marcus detailed the expectations and stated the requirements objectively which simplified my specs and planning. Working with his teams he chose the right leadership style according with people's seniority. In my case we worked well as a team, as I had the independence I needed and just fed him the necessary outputs without a need of supervision or direct control. Marcus is attentive to people's needs and very supportive and friendly, which makes him a good team leader.

Isabel Lopes Margarido, PhD — Former teammate

Read all recommendations

05 / open knowledge

Open knowledge is part of the work.

I teach AI and development in Portuguese at Conhecendo IA — because knowledge should not require a language tax.

Visit Conhecendo IA

06 / next

Have a real constraint?

GitHub is the best place to see what is in motion. For everything else, start there.

Open a channel