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QueryBlocks

Software engineering for ambitious startups

Software that holds up when it matters most.

We are the engineering team behind fintechs, AI products, web platforms and games. From the first line of code to production.

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Teams building with us

  • Blinka
  • Coink
  • Plataform
  • Q-Mission
  • 7Gems
  • Civil Intelligence
  • Aventuras Bonitas
  • Martin Brainon
  • Magno
  • Guru
  • Raz Consulting

What our clients have achieved

Facts published by each client.

Blinka
Backed by Y Combinator
Q-Mission
Platform used by military clients
Coink
Regulated digital banking in Colombia
Hender's Castle
On Steam, launching Q2 2027

Work

Real products in the hands of real people.

A selection of what we have built and shipped together with our clients.

See all work
  • Y Combinator

    Blinka

    Banking platform for global companies: USD accounts, global payments, cards and treasury.

  • In production

    Coink

    Digital banking for people and businesses, and banking-as-a-service for other fintechs.

  • In production

    Q-Mission

    Platform to develop, train and measure the readiness of defense cyber forces.

  • Steam

    Adventure in Hender's Castle

    A 3D action-adventure of exploration and magic: draw magic circles, brew potions and bargain with ghosts.

  • In production

    Plataform

    100% digital factoring and confirming so companies can turn their invoices into liquidity.

  • See all work

Services

What we build for you.

Small senior teams that own the whole product: design, engineering and infrastructure.

  1. 01

    Fintech and open banking

    Credit, factoring, digital banking and banking APIs. Financial products built with security from day one.

  2. 02

    Applied AI: products, agents and MCP

    AI products, from scoring and analysis to agents. We design architectures with agents and MCP servers, and vector databases for semantic search and RAG, to take AI to production and scale it across your business.

  3. 03

    Web platforms and SaaS

    Scalable web applications, from idea to launch and beyond.

  4. 04

    Mobile apps

    Native and cross-platform apps with a carefully crafted experience.

  5. 05

    Games and 3D

    3D games and interactive experiences, all the way to a Steam release.

  6. 06

    Software architecture

    We design the architecture of complex, distributed systems: data, integrations, security and cloud infrastructure, for platforms that have to scale and run in demanding environments.

  7. 07

    Blockchain

    Smart contracts and secure data transfer, without intermediaries.

  8. 08

    Team extension (outsourcing)

    Senior engineers who join your team to expand its capacity: you set the priorities, we bring talent, method and continuity.

How we work

A simple process with no surprises.

  1. Discovery

    We understand the business, the users and the constraints before writing code. We leave with a scope, the risks and a clear roadmap.

  2. Architecture

    We design the system to grow: data, security, integrations and infrastructure.

  3. Build

    Frequent deliveries with real demos. Clean code, tests and automated deployments.

  4. Launch and scale

    We go to production with monitoring and keep evolving the product with you.

Success stories

Trusted by people building the future.

  • QueryBlocks transformed our infrastructure entirely. Their focus on security and scalability allowed us to launch with confidence in a highly regulated market.
    Alberto RoncalloCEO & Founder · Q-Mission
  • The speed of delivery was impressive. They understood our business model from day one and delivered a product that exceeded our expectations.
    Matias MendiondoCEO & Founder · Atua
  • A true technology partner. They didn’t just write code; they helped shape our product strategy and user experience from day one.
    Hender TrixelCOO & Co-Founder · Aventuras Bonitas
  • The QueryBlocks team deeply understood our people-centered vision. They built data engineering and simulation solutions that allow us to analyze psychological profiles and human behavior with scientific rigor, without sacrificing usability or real-world impact.
    Noemi AlvaresCEO · Martin Brainon

Team

Meet the team behind the code.

Senior engineers, designers and strategists obsessed with getting things right.

Meet the whole team

Have a product in mind? Let's talk.

Tell us what you want to build. In a 30-minute call we leave with a diagnosis and a first plan.