Python Finance Developer (100% Remote Worldwide)

About UBQ.io
UBQ.io is a general technology service provider dedicated to building a more sustainable, independent, and equitable future. We partner with global companies across industries, including AI, blockchain, software, biotech, and education, to transform bold ideas into real, meaningful solutions.

Our expertise spares technology consulting, AI and Machine Learning development, Blockchain integration, and global team collaboration. With a worldwide network of specialists, we help organizations stay ahead in a rapidly evolving digital landscape.

At UBQ.io, we don’t just advise, we collaborate. Our commitment to innovation, sustainability, and social responsibility guides everything we do as we help clients build technologies that empower people, communities, and industries to thrive.

About the role

We are looking for a Finance Developer to join our team and help build an internal web platform that supports portfolio management for our finance and operations teams. Working at the intersection of

finance and technology, you will turn financial data and business requirements into accurate, reliable tools. You will own features from end to end, from data queries and calculation logic through to the user interface.

What you'll do

Design, build and maintain platform features, including summary metrics, interactive tables and data visualisations.

Translate financial methodologies such as valuation, P&L; attribution, exposure and cost basis into clean, well-tested backend logic.

Make sure every figure reconciles accurately against source systems and existing reporting.

Write and optimise SQL queries against our cloud data warehouse.

Keep the platform fast and reliable through caching, performance tuning and robust error handling.

Work closely with finance and operations stakeholders to gather requirements, validate results and deliver improvements.

Our stack

Backend: Python, FastAPI, Pydantic, Google BigQuery, Redis

Frontend: React, TypeScript, Vite, TanStack Query, Recharts, Tailwind CSS

Solid professional experience with Python, including building backend services or data applications.

A good understanding of financial concepts: positions, P&L; (daily, MTD, YTD, ITD), NAV, exposure and cost basis.

Comfort writing non-trivial SQL, ideally on BigQuery or another cloud warehouse.





A strong eye for detail and a habit of testing and reconciling numbers until they're right.

Clear communication, and the confidence to challenge and clarify requirements with finance teams.

A MSc in Finance, or progress towards a professional qualification such as CFA or CAIA (Level I or above), or equivalent.

Advantageous

Front-end experience with React and TypeScript, especially data-heavy UIs.

Experience with BI and reporting tools, or building analytics dashboards.

A background in asset management, fund administration, treasury or fintech.

Familiarity with multi-asset portfolios, e.g. equities, fixed income, digital assets and commodities.

Experience with Google Cloud and caching strategies.

Semi Senior

Senior

FastAPI

SQLAlchemy

Docker

Git

RabbitMQ / Kafka / Celery / Redis Queue

Contractor

Full-time

Argentina

Nota

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with Tether

Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT , relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.

But that’s just the beginning:

Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the- art, geo-diverse facilities.

Tether Data: Fueling breakthroughs in AI and peer-to-peer technology,



we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET , our flagship app that redefines secure and private data sharing.

Tether Education : Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.

Tether Evolution : At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?

Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.

If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.

Are you ready to be part of the future?

About the job

We’re looking for an Automation QA Engineer with strong automation skills who also takes ownership of manual testing for our desktop and mobile applications.

Responsibilities

Build and maintain desktop and mobile test automation for critical user flows.

Integrate tests into CI/CD pipelines and keep them fast and reliable.

Investigate failures, fix flaky tests, and manage test data and environments

Report clear, reproducible bugs and verify fixes

Work with developers and product on testability and acceptance criteria

Perform hands‑on functional, exploratory, and regression testing of new features

Choose manual or automated coverage based on risk; maintain regression suites.

Mandatory:

4+ years in QA automation, plus hands‑on manual and exploratory testing experience.

Experience running tests in CI/CD pipelines (for example, GitHub Actions).

Hands‑on experience with Playwright for desktop or web, and WebdriverIO + Appium for mobile.

Experience testing Electron and/or React Native apps, including on real iOS and Android devices.

Experience using AI tools in QA and critically reviewing their output. Testing AI‑powered applications is a plus.

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📌 Remote Python Developer: Automation, Integrations & Bi (Argentina)
🏢 Bold Business
📍 Argentina