Put your

internal tools

AI agents

vibecoded apps

data & context

on AI rails

We build internal tools and AI operating systems
to help startups & VC funds do more with less, at scale.
Get in touch
[ Trusted by THE BEST STARTUPS & VCs IN THE WORLD ]
[ PROBLEM ]

Anyone can build. Anything can break.

Off‑the‑shelf software is slowing you down and AI makes it obvious you should build your own tools and workflows. But every time you try, you hit the same walls: tools are siloed, hard to rely on and can't scale without a system around them.
[ BUILD ]

Custom

“Everyone says ‘use AI’… but what do we actually use it for first?”
Knowing where to start can sometimes be tricky if you don’t have full visibility into your tooling, workflows, and your team’s day-to-day needs and pain points.
[ SCALE ]

Guardrails

“Even when AI tools work for some, the rest of the team doesn’t follow.”
If AI setups are personal and not part of the same system, AI can’t compound knowledge to improve and your team can’t benefit from what your champions are building.
[ SHARE ]

Reliable

"AI prototypes built by the team aren’t reliable enough to use in production."
It takes experience to build functional tools, and even when workflows are properly designed, the data, context and software they’re built on top of can be limiting factors.
[ MONITOR ]

Data

“We have zero visibility into what got built, what it can access, or what it costs.”
Once tools start touching real systems, leadership and engineering need to put some guardrails in place, otherwise AI experiments are at risk of becoming liabilities.
[ ServICES ]

Build your own tools with AI. Properly.

Siloed tools don’t compound. We build operating systems made of tools and AI agents with shared data and context. Guardrails and visibility are built in, so adoption scales without scaling risk.
[ 01. WORKFLOWS ]

Streamline
Your Work

To automate busywork and help the team self-serve with AI.
Single integration
to connect all your tools & skills together
AI Agents
that take repetitive work off your plate
Custom skills
to codify your knowledge & processes
Get in touch
[ 02. TOOLS ]

Unlock
Your Tools

TO HAVE TOOLS BUILT around the way you work.
Custom interfaces
for needs off-the-shelf tools do not cover
Self-serve
app & agent develoment by your team
Migrations
to AI-compatible tools (API-first, infra-level, great docs)
Get in touch
[ 03. FOUNDATIONS ]

Build Strong
Foundations

TO HAVE A Reliable and scalable system in place.
Source-of-truth
clean, centralized and structured ops data
Context layer
on top of data to capture intelligence
Guardrails
auth, permissions, auditability, observability
Get in touch
[ 01. WORKFLOWS ]

Streamline‍

Your Work

To automate busywork and help the team self-serve with AI.
Get in touch
[ 02. TOOLS ]

Unlock

Your Tools

TO HAVE TOOLS BUILT around the way you work.
Get in touch
[ 03. FOUNDATIONS ]

Build Strong

Foundations

TO HAVE A Reliable and scalable system in place.
Get in touch
Single integration
to connect all your tools & skills together
AI agents
that take repetitive work off your plate
Custom skills
to codify your knowledge & processes
Custom interfaces
for needs off-the-shelf tools do not cover
Self-serve
app and agent development by your team
Migrations
to AI-compatible tools (API-first, infra-level, great docs)
Source-of-truth
clean, centralized and structured ops data
Context layer
on top of data to capture intelligence
Guardrails
auth, permissions, auditability, observability
[ PROCESS ]

From chaos to harmony

Audit
We audit your operational system and talk to main stakeholders to get a clear picture of your needs.
Implementation
We centralize your data, build tools, and automate workflows according to what’s most urgent and impactful.
Documentation & training
We embed documentation directly into tools and provide hands-on training for your team.
Iteration
We run small, iterative sprints to ensure everything we set up is both valuable and actively used by your team.
Maintenance
We anticipate issues before they arise and offer round-the-clock support, keeping your system running seamlessly.

Some of the tools in our Railstack

Some of the tools in our Railstack

[ 01/03 — Technical Approach ]       

Tools are nothing without a system

[ 02/03 — OPERATIONAL Approach ]

Here to deliver outcomes

[ 03/03 — Organizational Approach ]

Bridging ops
& engineering

We act on first principles to build custom operating systems designed both for humans and agents.
Get in touch
Unified
One source of truth, one context layer, one way to connect tools. When the system is unified, AI can reuse context and compound intelligence across the company.
Governed
Guardrails make AI safe to scale: clear access boundaries, auditability, and cost visibility. You know what is running, what it can touch, and what it costs.
Modular
Tools are building blocks, and bad APIs break the whole system. We favor API-first modules so your internal tooling becomes programmable by agents.
We are low-maintenance and high-impact, anticipating your needs to deliver leverage without extra work.
Get in touch
Get in touch
Embedded team
We deeply love our work, carefully choosing clients and acting as dedicated team members.
Outcomes-centric
Our goal is to save you time and help your team reach ultimate leverage with AI. We focus on outcomes, not delivery.
Full-Stack
One partner with all the skills you need to build great internal tools and systems (full-stack, design, data, cloud, product management).
Ultra Responsive
We document everything we do and respond within minutes/hours directly in your Slack.
We are ops engineers: helping operators get control over their tools and engineers over their systems.
Get in touch
For Operators
We translate operational and business language into code and help you build apps and agents with AI to change the way you work.
For Engineers
We build foundations & guardrails to guarantee system reliability and help you focus on product work.
[ 01/03 — Technical Approach ]

Tools are nothing without a system

Operational excellence can’t be bought off the shelf—it has to be intentionally designed.
We act on first principles to build custom operating systems designed both for humans and agents.
Get in touch
Unified
One source of truth, one context layer, one way to connect tools. When the system is unified, AI can reuse context and compound intelligence across the company.
Governed
Guardrails make AI safe to scale: clear access boundaries, auditability, and cost visibility. You know what is running, what it can touch, and what it costs.
Modular
Tools are building blocks, and bad APIs break the whole system. We favor API-first modules so your internal tooling becomes programmable by agents.
[ 02/03 — OPERATIONAL Approach ]

Here to deliver outcomes

Operational excellence can’t be bought off the shelf—it has to be intentionally designed.
We are low-maintenance and high-impact, anticipating your needs to deliver leverage without extra work.
Get in touch
Embedded team
We deeply love our work, carefully choosing clients and acting as dedicated team members.
Outcomes-centric
Our goal is to save you time and help your team reach ultimate leverage with AI. We focus on outcomes, not delivery.
Full-Stack
One partner with all the skills you need to build great internal tools and systems (full-stack, design, data, cloud, product management).
Ultra Responsive
We document everything we do and respond within minutes/hours directly in your Slack.
[ 03/03 — Organizational Approach ]

Bridging ops

& engineering

Operational excellence can’t be bought off the shelf—it has to be intentionally designed.
We are ops engineers: helping operators get control over their tools and engineers over their systems.
Get in touch
For Operators
We translate operational and business language into code and help you build apps and agents with AI to change the way you work.
For Engineers
We build foundations & guardrails to guarantee system reliability and help you focus on product work.
“We moved from Google Sheets to a fully custom software that now powers our influencer marketing operations and saves us hundreds of hours per month. Railblocks helped us structure our data, refine our processes, automate our tasks, and built a powerful internal tool 100% tailored to our needs. It genuinely feels like they’re part of our team, which is rare to find in an external partner.”

Mindaugas Petrutis, Creator Evangelist Lead at Lovable

"Railblocks automated away 80% of the operational work for our program, removing a ton of tedious work and allowing us to spend more time on growing the program to better support our founders."

Alexis Wiseman, Program manager at Mercury

"Railblocks built a custom CRM allowing us to track the relationship between all our members and personalize our communication at scale. Processes that used to take up most of a team’s bandwidth can now be run by a single person!"

Julian Weisser, Founder & CEO at On Deck

"The Railblocks team designed, implemented, and automated our entire funnel, from our website to onboarding comms and KPI tracking. They’re proactive, get things up and running fast, and are constantly iterating to nail the details. They’re a huge asset & our team loves working with them!"

Minn Kim, Founder & CEO at Lighthouse

[ PRICING ]

Increase your output, lower your costs

Every month you wait, rigid tools drain revenue, drive up costs and force you to scale with more hires. Streamline your company now and help your team work smarter with AI.STREAMLINE YOUR COMPANY NOW.
Get in touch
Starting from
$5,000
per month
Monthly retainer
Flexible commitment
Embedded team: outcomes manager + full-stack engineering team (data, front-end, cloud)
All included: audit, system design, implementation, documentation, training, iteration & maintenance
Get in touch

RAILS

Make the most out of your existing tools
Best for teams that want quick wins:
  • Mapping of your tools and workflows
  • Workflow automation with AI agents
  • Single integration to connect to all your tools and skills
  • Custom skills to codify your knowledge & processes

Blocks

Upgrade your data, context and tooling
Best for teams running into the limits of their current system:
  • Everything in Rails +
  • Data extraction and centralization
  • Context layer on top of data to capture intelligence
  • Migration to more AI-compatible tools

SYSTEM

Buid your own custom Operating system
Best for teams that want a compounding & lasting asset:
  • Everything in Blocks +
  • Custom interfaces for gaps your tools can’t cover
  • Self-serve app and agent development by your team
  • Guardrails (permissions, audit, observability)

Increase your output lower your costs

Every month you wait, inefficiencies drain revenue and force you to scale with more hires—streamline your company now.
Get in touch
Starting from
$8,000
per month
Monthly subscription
No commitment, cancel anytime
Focus on what drives ROI: tools, workflows, or data
All included: audit, system design, implementation,   documentation, training, iteration & maintenance
[ USE CASES ]

Results
in production

custom-built operating systems unlock measurable ROI. DISCOVER How our partners achieve transformative efficiency and effortlessly scale their operations.
[ #01 ]
How ODF handled 1000s of monthly applications with their custom CRM
READ THE CASE STUDY
[ #02 ]
How Lighthouse managed a 150% MoM volume increase without adding headcount
READ THE CASE STUDY
[ TEAM ]

System designers, track layers & mechanics

A FULLY DISTRIBUTED team of ENGINEERS & architects with high-growth startup experience used to building internal tools & Navigating complex systems
WE're HIRING. JOIN US!
Lorenzo Castro
Built & managed the largest & most complex Airtable & Zapier accounts in the world.
VLADIMIR OUSTINOV
Built a real estate startup’s system & growth engine from 0 to $15M annual revenue.
Florian Bühringer
3x technical founder with experience scaling infra from 30 to 300 people.
MAX WESENER
Built AI Agents & low-code internal systems for fast-growing unicorns.
SIMON SOSULSKI
Built ops systems for 30 companies saving them millions of dollars in inefficiencies.
JAD CHALLITA
Built products from scratch as a fintech CTO & engineering lead at a Series B company
AMAURY LE Franc
Built & scaled ops systems from Series A to hypergrowth for a $5B unicorn.
PIERRICK D'ANNOVILLE
Serial technical founder with 7y of experience automating internal operations.
CHRISTIAN EMMANUEL
2x founder and data engineering expert who has built 0-1 AI products & data systems.
VITOR LIMA
5y of experience building custom design systems & refining agentic technology for leading AI labs.
[ MANIFESTO ]

Not your tools, not your rules

Read our three pillar articles to uncover how custom internal tools and operating systems empower businesses to reclaim AUTONOMy, efficiency, and control
SEE ALL ARTICLES