Samuel Fajreldines
Samuel Fajreldines is an individual senior software engineer and solo developer/creator who helps growing U.S. businesses operate an ongoing software department: he sets technical direction while his team builds, integrates, maintains, and improves business software. He also publishes software-engineering writing and open-source AI/coding tools.
At a Glance
- Growing U.S. businesses
- Distributors
- Property-management companies
- Ecommerce operators
- +4 more
AI Tools by Samuel Fajreldines
(1)
Distill
Open Source Terminal Coding Agent
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Latest News
Distill v2.0.49 released with platform binaries and installers for macOS, Linux, and Windows.
Sam Harness added Distill/OpenRouter/Jev-powered headless review and repair, described in the repository as release 0.11.0.
Published “Should a Small Business Build Custom Software or Buy It?” comparing buying, connecting, and building software for small businesses.
Published “How to Test Human Approval in AI Agents Before Production,” covering approval gates, rejection side effects, and unchanged-payload execution.
Products & Services
A month-to-month engineering service in which Samuel acts as technical director and his team handles new builds, integrations, fixes, maintenance, and improvements for a client's internal and customer-facing software.
An open-source lightweight coding-agent harness and terminal UI. It reduces tool-result text before it reaches the model, supports Grok and Codex subscriptions, OpenRouter, local models, and OpenAI-compatible providers, and includes Reasoning, Worker, and Utility model tiers with Jev routing. Apache-2.0 licensed.
A Go CLI and portable skill that scans a repository, asks for business facts source code cannot prove, creates approved plans, installs durable instructions, and runs controlled check/review/repair/delivery lifecycle phases for AI coding agents.
A 20-chapter, six-part book/course about software engineering with AI agents, covering practical workflows, safety gates, and enterprise operations in English, Brazilian Portuguese, and Spanish.
Market Position
For software services, Samuel explicitly positions the practice between freelancers and development agencies: unlike one-off freelancers or rotating project teams, he offers a continuing software department with one senior engineer personally accountable for technical direction and delivery. For AI coding tools, Distill differentiates through pre-model token reduction, model-tier routing, deterministic guards, preserved originals, and verifiable fallbacks; Sam Harness focuses on repository-aware controls and evidence-backed agent lifecycles rather than a large prompt alone.
Leadership
Founders
Samuel Fajreldines
Senior software engineer with 15+ years building software, much of it for U.S. companies; his site says he has shipped for big technology companies, banks, and media companies serving millions of users. He is the samuelfaj GitHub account, based in Rio Grande do Sul, Brazil, and is associated there with @smartplan-br.
Executive Team
Samuel Fajreldines
Senior Software Engineer; technical director for client software departments
He says he personally sets technical direction, leads delivery accountability, and has 15+ years of experience building software for U.S. companies, big technology companies, banks, and media companies.
Founding Story
Samuel's current practice is positioned around a gap he sees in growing businesses: they need an accountable software function rather than rotating freelancers or project agencies. His stated model is to become the client's software department, personally set technical direction, have his team deliver, and remain accountable for the systems over time. In parallel, he created open-source tools to make AI-assisted software engineering more efficient and verifiable, including Distill and Sam Harness.
Business Model
Revenue Model
Recurring, month-to-month software-engineering service retainers: clients hire Samuel's team as an ongoing software department rather than for a one-off project. Open-source software such as Distill and Sam Harness is publicly available; the personal site does not state a paid license or hosted-SaaS revenue model for those projects.
Pricing Tiers
Month to month with Samuel as technical director, his team handling delivery, direct access to him, and scope covering new builds, integrations, fixes, maintenance, and improvements.
Target Markets
- Growing U.S. businesses
- Distributors
- Property-management companies
- Ecommerce operators
- B2B services companies
- Manufacturers
- Distributors connecting CRM and warehouse systems
- Property-management customer portals and notifications
- Ecommerce operations, returns, inventory, and shipping workflows
- B2B services maintaining and modernizing old internal software
- Manufacturers automating quotes and pricing handoffs into production
- Logistics dispatch, driver workflows, and customer-visible tracking
- Uber
- SecurityScorecard
- mahisoft
- E-TRUST