Engineering Partners, at Your Side
Senior engineering teams that integrate with your culture and roadmap. We own delivery, maintain predictability, and apply AI where it adds value.
Dedicated teams that fit your tech stack and organization
Compact, senior teams that integrate with your culture and workflows, from MVP to growth-stage.
Permanent lead/architect for the duration of the engagements.
We align on scope and milestones quickly, then ship in short cycles for fast feedback.
NDAs and clear IP ownership by default. We follow Secure by Design principles. Security considerations inform how we architect, build, and deliver.
Long-Term Partners, Proven Results
We build dedicated teams that embed into your company, take proactive responsibility, and deliver measurable outcomes you can count on.

SixSides have delivered their expertise for over seven years to help us build a market leading SaaS product. With exceptional work ethic and deep technical knowledge they continue to meet project goals and integrate seamlessly with our teams.
I began my career at Bell Labs working with many world-class software engineers, and at Artsy we had a great NYC-based engineering team, many of whom have now started companies themselves or work for top companies like Amazon, Meta, Microsoft, etc. I know what good engineering looks like. Martin and Daniel, the two SixSides partners who’ve led our engineering team for the last four years, are excellent, technically as well as culturally. On a practical level they speak great English, are essentially on eastern time zone, and the prices are very competitive.

More recently, the SixSides team built an entirely new author website building platform (essentially “Squarespace for authors”), from ideation to launch with paying customers in less than 6 months. Now, five months after launch, we’ve scaled to thousands of paying subscribers while simultaneously adding functionality with weekly new releases — all while maintaining and improving the performance of the platform. I don’t think any engineering team I’ve worked with in the past, including top NYC-based engineers costing much more, would have been able to deliver at this level of speed and quality.
Leveraging AI for Improved Productivity
AI tools are used throughout the development lifecycle, always overseen by senior engineers. Our R&D team continuously tests and incorporates new tools that add value without introducing excessive risk.
Architecture & Design
AI helps compare design options, surface trade-offs, and draft outlines. Engineers validate inputs and make final decisions to keep systems scalable and maintainable.
Build & Development
AI accelerates scaffolding and pattern implementation and assists with PR reviews by spotting inconsistencies and suggesting improvements. Developers remain accountable for correctness and long-term quality.
Testing & QA
AI proposes test cases, highlights coverage gaps, and detects flaky results. QA and engineers validate critical paths to combine automation with human judgment.
Release & Operate
AI drafts changelogs, deployment notes, and incident summaries to reduce manual work. Engineers ensure secure releases, monitor signals, and maintain predictable, audit-ready operations.