Custom software development services
Software built around how your business actually runs: internal platforms, customer portals, SaaS products and integrations, designed and delivered by senior LATAM engineers on your hours.
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15+years delivering software
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100+senior engineers across LATAM
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6-8hdaily overlap with US teams
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6+Fortune 500 & global brands trust us
Software built around your process, not the other way round
Most companies call us when the spreadsheets, the plugins and the off-the-shelf tools have stopped fitting the way the business works.
FusionHit is a custom software development company that designs and builds the system you actually need, from requirements to go-live, and hands it over with the code, the documentation and the environments under your name. Senior engineers across Latin America, working on US hours, so the decisions that shape your software get made in the same day.
\ Custom software we build for US companies
The systems our clients ask for most often, each one designed for their data, their users and the tools it has to talk to.
Internal tools and operations platforms
The system that replaces the spreadsheets: workflows, approvals, dashboards and the data model underneath.
Customer and partner portals
Self-service portals where your customers, vendors or partners see their data and get things done without a phone call.
SaaS products and MVPs
A first version scoped to what the market needs to see, built on an architecture that can grow into the full product.
Integrations and APIs
The layer that makes your ERP, CRM, payment and logistics systems share data instead of duplicating it.
Replacing off-the-shelf systems
A legacy or packaged system rebuilt around your process, migrated without stopping the business.
Mobile apps
Field, customer and employee apps delivered with the backend and the admin tools behind them.
Data and reporting
Pipelines, warehouses and reporting layers that turn the data your systems already produce into decisions.
AI features
Generative AI, agents and machine learning built into the software as a scoped feature that ships to production.
When custom software is the right call, and when it is not
Custom software is not always the answer. This is the checklist we run with you on the first call before anything gets estimated.
Your process is standard and you are fine adapting it to the tool.
The process is how you compete, and the tool keeps forcing workarounds.
The tool already connects to the systems you run.
You need it to talk to systems it was never built for, or to your own data model.
Per-seat pricing stays small at your scale.
Licenses, add-ons and manual work around the tool cost more each year than a system you own.
You can live with the vendor's roadmap and release cycle.
You need to change how it works when the business changes, on your timeline.
Nobody in the company will need the source code.
You want the code, the data and the roadmap under your name, with no vendor lock-in.
Your process
Integrations
Cost over time
Control
Ownership
What the timeline and the cost depend on
Every vendor says 'it depends'. This is what it depends on, by the kind of system you are building, so you arrive at the first call knowing what to expect.
3-4 months
Number of workflows and user roles, approvals, reporting, and how much data has to migrate from spreadsheets.
4-6 months
Authentication and permissions, the systems it reads from and writes to, and the volume of users at launch.
3-5 months
The scope you can launch with, multi-tenant architecture, billing, and how much of the product is really needed for the first customers.
2-3 months
Number of systems, data quality on both sides, and whether the vendors document their APIs.
6-9 months
Feature parity with what people use today, data migration, and running both systems in parallel during cutover.
Internal tool or operations platform
Customer or partner portal
SaaS MVP
Integration layer or API
Replacing an off-the-shelf system
How we build custom software
What you get when the software is delivered
Source code and repositories
Everything lives in repositories under your organization from the first commit. You own the code and the intellectual property.
Documentation and architecture
Architecture decisions, data model, setup and runbooks written down, so the system does not depend on who built it.
Environments and CI/CD
Development, staging and production environments under your cloud account, with the pipeline that deploys to them.
Automated tests
A regression suite that runs in the pipeline, so the next change does not break the last one.
Training and handover
Sessions for the people who will use and maintain the system, and a handover checklist we close together.
Support after launch
A warranty period written into the agreement, and a support plan if you want us to keep evolving the system.
Why US companies build custom software with FusionHit
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Senior engineering talent
Vetted nearshore engineers with production experience building custom systems across industries and modern stacks.
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Real-time collaboration
Discovery, design reviews and acceptance happen on US Central and Eastern time, so decisions get made the same day instead of the next morning.
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Flexible engagement
A fixed price for a defined scope, or a dedicated team when the product keeps evolving after launch.
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Integrated partnership
One delivery lead accountable to you, working in your tools and reporting in writing every week.
Custom software we have delivered
AI-Augmented Development and Operations in a Multi-Team Enterprise
Challenge Multiple engineering teams working across Supply Chain and Support Services were operating in silos, each dealing independently with challenges around…
Embedding AI Across the Full Engineering Lifecycle
Challenge A product engineering team was managing growing codebases with increasing complexity around quality control, documentation, and cloud infrastructure. Code reviews…
Closing the Mobile Platform Gap Through AI-Accelerated Development
Challenge A mobile product team was running two parallel codebases — iOS and Android — but iOS development was consistently falling…
Three ways to contract custom software
Custom software is what we build. These are the three ways you can work with us to build it.
Staff augmentation
Senior engineers added to your existing team, under your direction. Best when you have a technical lead and need capacity or a specific skill.
Dedicated development teams
A stable team that works only on your product, with a lead on our side. Best when the system will keep evolving after launch.
Software development outsourcing
A defined scope delivered end to end under our management, for a fixed price and date. Best when the scope is clear and you want one number and one date.
Stacks we build custom software on
We pick the stack for the system and for the team that will maintain it, not for us.
Backend
- • .NET
- • Java
- • Node.js
- • Python
Frontend
- • React
- • Angular
- • Vue.js
- • Next.js
Mobile
- • React Native
- • Flutter
- • Swift
- • Android
Cloud and DevOps
- • AWS
- • Azure
- • Google Cloud
- • Docker
- • Kubernetes
Data
- • SQL Server
- • PostgreSQL
- • Snowflake
- • Databricks
AI
- • OpenAI
- • LangChain
- • PyTorch
- • TensorFlow
Custom software under your industry's rules
A team that has built under your regulator writes the acceptance criteria you would have written yourself.
Fintech
Systems built inside PCI scope, with audit trails and month-end edge cases in the criteria.
Healthcare
Software that handles PHI under HIPAA and knows what never goes in a log.
SaaS
Multi-tenant products built to ship weekly after handover.
Logistics
Systems that run around the clock, with cutovers planned around them.
Retail
Platforms sized for a peak season, tested before it arrives.
Manufacturing
Integrations with plant equipment nobody wants to touch.
FAQs about our custom software development services
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How much does custom software development cost?
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How long does it take to build custom software?
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How do we know if we need custom software or an off-the-shelf tool?
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Can you integrate the new software with our existing systems?
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Can you replace software we already use without stopping the business?
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Who owns the code and the intellectual property?
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What do we need to provide on our side?
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What happens after the software is delivered?
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How is this priced: fixed price or a monthly team?
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Do you work in our time zone?
Ready to build software around how your business works?
Tell us what your team is working around today, and we will come back with a scope and a plan.
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