// AI applied to critical systems

Mission-critical engineering,executed by AI agents.

Squads of autonomous agents that build and modernize software for banks, payments and high-volume operations, with bank-grade security and a senior architect accountable for every delivery.

  • 19+ years in financial systems
  • IEEE Senior Member
  • Sentinel Method · open source
architectdevqahumansecurityreviewerdevopsARKO · ARCH-01
Each agent is a stone in the arch. The senior architect is the keystone.
transactions per day on platforms our architects designed
10M+
uptime in critical operations and Black Friday
99.99%
countries served by remittance systems
200+
agent squads in continuous execution
24/7

// 01 domains

Where failure is not an option.

We work where mistakes are expensive: money, data and availability.

// 02 the squad

A complete engineering team, made of agents.

Each agent has its own role, tools and exit criteria. Together they work like a senior team: in parallel, no queue, no pause.

  • agent.architect

    Architect

    Reads the existing code, breaks goals into tasks and defines contracts, patterns and boundaries.

    mapping module dependencies

  • agent.dev

    Developers

    Several in parallel, in Java, TypeScript, Python and the stack you already use.

    adding retry with backoff

  • agent.qa

    QA

    Generates and runs unit, integration and regression tests on every change.

    48 tests generated

  • agent.security

    Security

    Static analysis, exposed secrets, vulnerable dependencies and OWASP patterns.

    SAST on 312 files

  • agent.reviewer

    Reviewer

    Rigorous code review: readability, architectural fit and maintainability.

    reviewing PR #318

  • agent.devops

    DevOps

    Pipelines, staging deploys, observability and automatic rollback.

    pipeline green

human.senior_architect

The keystone: a real senior architect.

Approves plans, makes the trade-offs and owns the delivery. Autonomous AI, human accountability.

19+ years in critical systems

// 03 how it works

You close the laptop. The squad keeps going.

A 24-hour cycle, with the plan approved by a human before execution and the delivery validated before it reaches your team.

  1. 6 pm

    You set the goal

    A feature, a bug, a migration. In plain language, with your business context.

  2. 7 pm

    The architect approves the plan

    Agents break down the work; a human architect validates the approach.

  3. 2 am

    Agents execute

    Code, tests, review and security scans in parallel, nonstop.

  4. 8 am

    Validated delivery

    A tested pull request that passed the Sentinel gates, ready when your team wakes up.

arko · squad-07 · reconciliation02:13:47
  1. 02:06:00architectbreaking epic #142 into 9 tasks
  2. 02:07:17dev-01implementing LedgerService.reconcile()
  3. 02:08:34dev-02migrating billing module to Java 21
  4. 02:09:51qa48 tests generated · 48 passing
  5. 02:10:08securitydependency scan · 0 critical
  6. 02:11:25reviewerPR #318 approved with 2 changes
  7. 02:12:42sentinelgate 3/4 performance · p95 112 ms
active agents 6tasks done 1.184supervision senior architect
Illustrative simulation of a squad at work.

// 04 security

Bank-grade security in every delivery.

Autonomy without control is risk. Every agent action is scoped, logged and verified before it reaches your code.

  • 01

    Least privilege

    Your credentials, with the minimum access needed, revocable at any time.

  • 02

    Audit trail

    Every plan, decision and commit logged and traceable.

  • 03

    Human review

    Nothing reaches the main branch without a person’s approval.

  • 04

    Privacy and compliance

    Work within the data rules and policies of your environment.

Sentinel Method · quality gates

  • gate 1 · testscoverage, edge cases, regressionPASS
  • gate 2 · securitySAST, secrets, dependenciesPASS
  • gate 3 · performancelatency, throughput, memoryPASS
  • gate 4 · maintainabilitystandards, readability, docsPASS
Sentinel Method on GitHub →

// 05 ai leadership

A reference in AI, grounded in production code.

Arko Labs comes from nearly two decades building financial systems at global scale, and from active research and publishing in AI.

  • IEEE

    IEEE Senior Member

    Contributing to IEEE global surveys on agentic AI and the impact of technology.

  • Book

    Building Agentic AI Systems

    A Practitioner’s Guide: patterns for taking AI agents from prototype to production.

  • Open source

    Sentinel, agent patterns and CTO Toolkit ↗

    Frameworks and a 24-skill Claude Code plugin, used by the squad itself.

  • Education

    UT Austin · AI/ML

    Postgraduate studies in AI and Machine Learning, plus telecommunications engineering at Inatel.

In the media
  • Valor Econômico
  • Metrópoles
  • CBN
  • BandNews FM
  • Estadão
  • Estado de Minas
  • O Povo
  • TI Inside

// 06 comparison

The future of software development has already started.

—Traditional teamArko squad
Working hours8 hours a day, weekdays24/7, weekends included
To scaleWeeks of hiring and onboardingNew agents the same day
Quality barVaries from person to personSentinel gates on every change
TraceabilityDepends on team disciplineEvery decision logged and auditable
AccountabilityTech leadDedicated senior architect

// 07 faq

Questions every CTO asks.

What is an AI agent squad?

An engineering team made of specialized AI agents (architect, developers, QA, security, reviewer and DevOps) working together and in parallel on your code, coordinated by a human senior architect.

Do the agents work unsupervised?

No. Agents execute autonomously, but plans are approved by a senior architect before execution, and nothing reaches your main branch without human review.

Do you work with banks and regulated companies?

Yes. Our architects come from financial and payment platforms at global scale, and the process was designed for environments with audit, compliance and data-privacy requirements.

How do you ensure code quality?

Every change passes the four Sentinel Method gates (tests, security, performance and maintainability) before it becomes a pull request. Anything that fails goes back to the agents.

What about the security of my code and data?

Agents work with least-privilege access, using credentials you control and can revoke at any time. Every action is logged and auditable.

How much does it cost?

It depends on scope and squad size. We start with a short assessment; then an architect sends a proposal with the recommended squad, plan and investment.

Let’s put a squad on your challenge.

Tell us what you need to build or modernize. An architect replies within one business day.