Independent software engineering · Puerto Rico
Custom software.
Sound engineering.
Built for your business.
Santurce Software builds custom applications, connects complex systems, and provides the technical leadership to move your business forward.
From a new product to an established platform, we turn operational needs into dependable software.
Hourly contracts · Ongoing or project-focused · Remote
Where we can help
Move the hard parts forward.
For businesses that need experienced implementation, sound technical decisions, or both.
Custom software engineering
Products, APIs, and systems built for the way your business works.
Explore the work 02 / RetrievalAI integration
Useful AI inside the systems your people already use.
Explore the work 03 / MCPAgentic systems & MCP
Give AI agents a clear interface to your business.
Explore the work 04 / LinuxDevOps & cloud engineering
Make production easier to run and change.
Explore the work 05 / PostgreSQLData engineering & reporting
Connect operational data to useful decisions.
Explore the work 06 / ArchitectureFractional engineering leadership
Technical direction, with hands-on follow-through.
Explore the workSelected work / Our own product
A complete platform.
Built from the ground up.
FlaskTrack is the laboratory software platform built and operated by Santurce Software.
Versioned workflows, inventory, instrument connectivity, Python/R pipelines, AI assistance, and agent-facing APIs bring the breadth of the work into focus.
Explore the engineering ↗Product engineering, from data model to deployment.
A straightforward engagement
Start with the work.
Keep the arrangement simple.
Senior engineering capacity without a full-time hiring process.
Define the need.
Discuss your system, goals, constraints, and where an experienced engineer would be most useful.
Set the working terms.
Agree on an hourly rate, scope, expected capacity, and any spending cap before work begins.
Build with visibility.
Review progress in your repository and tools. Adjust priorities as the work becomes clearer.
Experience behind the work
Hands-on engineering.
Experienced technical leadership.
Founded by Jake Kalstad, Santurce Software brings software engineering experience dating to 2008, across manufacturing, advertising technology, construction, and laboratory systems.
Our approach connects business priorities with practical architecture, implementation, and ongoing operations.
About Santurce Software →Before we talk
A few useful answers.
How do engagements work?
Work is contracted through Santurce Software LLC and billed hourly. We agree on the rate, priorities, expected capacity, and any spending cap in writing before starting. Both ongoing support and defined projects use time-based billing.
Who will I work with?
You work directly with the engineer responsible for the engagement, with clear ownership of architecture, implementation, and technical decisions.
Can you work with our existing team and codebase?
Yes. Engagements can focus on a specific system or backlog, additional senior engineering capacity, or fractional technical leadership alongside your team.
Where are you based?
Santurce Software is based in Canóvanas, Puerto Rico and works remotely with clients in Puerto Rico, the mainland United States, and elsewhere. Puerto Rico stays on Atlantic Standard Time, UTC−4, year-round.
What should I send to get started?
A short description of your company, current system, problem, desired timing, and expected weekly capacity is enough for an initial conversation. Rates and availability are confirmed individually.
Let’s get to work
What needs to move forward?
Tell us about your product, the problem, and the kind of help you need.