Aarin techfin Tech Stack

Open Finance and Pix infrastructure for Brazilian digital banks

Financial Services São Paulo, São Paulo 51–200 employees Founded 2020 Privately Held

Aarin builds core banking and Open Finance technology for fintech companies in Brazil, positioned to let customers operate as their own digital banks without building from scratch. The stack is heavily frontend-weighted (React, Vue, Angular, Next.js) paired with AWS event services (Lambda, SQS, SNS, EventBridge), suggesting a componentized, event-driven architecture. Current hiring is concentrated in engineering and data roles at mid-to-senior levels, with active work on KPI monitoring and data alignment—indicating that internal metrics fragmentation and regulatory compliance tracking are immediate constraints as the platform scales.

Tech Stack 54 technologies

Core StackPower BI Looker Tableau GitHub Python Figma Miro Slack ClickUp React Vue Angular JavaScript TypeScript Next.js .NET AWS Lambda QuickSight SQL Notion HTML CSS Git Sass Stylus styled-components AWS Step Functions EventBridge AWS SQS AWS SNS+22 more

What Aarin techfin Is Building

◆Challenges

Performance and consistency
Inconsistent metrics
Data governance gaps
Data alignment across departments
Ensuring compliance with financial regulations
Managing regulatory risk for payment institutions
Scaling for large user base
Operational incident resolution
Transaction inconsistency detection

▲Active Projects

Strategic kpi monitoring
Strategic planning data support

Hiring Activity

Accelerating10 roles · 10 in 30d

Department

Engineering

Data

Product

Compliance

Sales

Support

Seniority

Mid

Senior

Notable leadership hires: Regulatory Head

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About Aarin techfin

Aarin is a fintech infrastructure company operating in São Paulo, Brazil, founded in 2020. The company provides technology, regulatory guidance, and services that allow customers to launch digital banking operations without building core systems independently. The offering centers on Open Finance and Pix integration, core banking components, and white-label internet banking applications. The customer base includes emerging financial institutions and fintechs across Brazil. At 51–200 employees, the organization is growing, with active scaling in engineering, data, product, and compliance functions to handle regulatory risk management and operational consistency.

HeadquartersSão Paulo, São Paulo

Company Size51–200 employees

Founded2020

Hiring MarketsBrazil

Frequently Asked Questions

What tech stack does Aarin techfin use?

Frontend: React, Vue, Angular, Next.js, TypeScript, JavaScript. Backend: .NET, AWS Lambda, Step Functions, EventBridge, SQS, SNS. Data/BI: Power BI, Looker, QuickSight, Tableau. Workflows: GitHub, SQL, Python, Figma, Notion, Slack, ClickUp.

What is Aarin techfin working on?

Current priorities include strategic KPI monitoring and data support for strategic planning. Internal challenges include inconsistent metrics, data governance gaps across departments, transaction inconsistency detection, and managing regulatory risk for payment institutions under Open Finance and Pix frameworks.