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Overview
Permanent, full-time, hybrid
Connecting clients to markets – and talent to opportunity.
With 4,300 employees and over 400,000 retail and institutional clients from more than 80 offices spread across five continents, we’re a Fortune-100, Nasdaq-listed provider, connecting clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors.
At StoneX, we offer you the opportunity to be part of an institutional-grade financial services network that connects companies, organizations, and investors to the global markets ecosystem. As a team member, you'll benefit from our unique blend of digital platforms, comprehensive clearing and execution services, personalized high-touch support, and deep industry expertise. Elevate your career with us and make a significant impact in the world of global finance.
Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies.
Technology Ecosystem:
Position Purpose: We’re looking for a Senior Software Engineer to join our team and play a key role in designing, developing, and delivering high-quality software. This role is ideal for someone who thrives on end-to-end ownership of projects, enjoys collaborating across the full SDLC, and brings strong frontend expertise in React.
While the focus is frontend, experience with .NET/C# backend services is a strong plus. You’ll work closely with product managers, designers, and fellow engineers to build scalable applications that deliver real business value.
Primary duties will include:
To land this role you will need:
Permanent, full-time, hybrid
Connecting clients to markets – and talent to opportunity.
With 4,300 employees and over 400,000 retail and institutional clients from more than 80 offices spread across five continents, we’re a Fortune-100, Nasdaq-listed provider, connecting clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors.
At StoneX, we offer you the opportunity to be part of an institutional-grade financial services network that connects companies, organizations, and investors to the global markets ecosystem. As a team member, you'll benefit from our unique blend of digital platforms, comprehensive clearing and execution services, personalized high-touch support, and deep industry expertise. Elevate your career with us and make a significant impact in the world of global finance.
Business Segment Overview: A Swift-accredited service bureau and member, our Payments division provides NGOs, institutions and non-profits the ability to make a local difference, globally – with transparent pricing across 180+ countries and 140+ currencies.
Technology Ecosystem:
- Languages & Frameworks:
- Back End: C#, .NET 9, ASP.NET
- Front End: React, TypeScript/JavaScript (ES6+), HTML5, and CSS/SASS
- Architecture: Microservices, Event-driven (Kafka, AMQP), CQRS
- Cloud & Infra: Azure, Kubernetes, Docker, Rancher
- Databases: MongoDB, MS SQL Server, PostgreSQL
- Tooling: Git, Visual Studio, VS Code, Rider, Copilot, CI/CD pipelines (Azure DevOps, GitHub)
Position Purpose: We’re looking for a Senior Software Engineer to join our team and play a key role in designing, developing, and delivering high-quality software. This role is ideal for someone who thrives on end-to-end ownership of projects, enjoys collaborating across the full SDLC, and brings strong frontend expertise in React.
While the focus is frontend, experience with .NET/C# backend services is a strong plus. You’ll work closely with product managers, designers, and fellow engineers to build scalable applications that deliver real business value.
Primary duties will include:
- Take part in the full software development lifecycle — from story pointing and design through to coding, testing, and deployment.
- Build responsive, modern UIs using React, TypeScript/JavaScript (ES6+), HTML5, and CSS/SASS.
- Collaborate with backend engineers on RESTful APIs, services, and data integration.
- Write unit and integration tests, using TDD where appropriate.
- Contribute to architecture discussions, code reviews, and continuous improvement practices.
- Use tools like Azure DevOps, CI/CD pipelines, Git, and cloud services to deliver reliable, scalable solutions.
- Lead project execution within your squad — ensuring scope, timelines, and quality standards are met.
To land this role you will need:
- 7+ years of professional software engineering experience, with at least 5 years in Front End development.
- Strong expertise in React (preferred) or similar UI frameworks (Angular, Vue).
- Proficiency in JavaScript (ES6+) and/or TypeScript, plus strong knowledge of HTML5 and CSS/SASS.
- Experience designing and delivering responsive web applications.
- Solid grounding in software design principles and architecture.
- Strong collaboration skills - able to work across Product, QA, and DevOps.
- Growth mindset and ability to lead projects without direct people management.
- Experience with C#/.NET backend development and RESTful services.
- Knowledge of SQL Server or MongoDB.
- Exposure to Azure cloud services, Docker/Kubernetes, microservices, CI/CD pipelines.
- Familiarity with financial markets, payments, or trading platforms.
- Understanding of UX principles and user-centered design.
- Bachelor's degree in Computer Science, Software Engineering, or equivalent experience
- Hybrid - private parking for employees.
- FTE (UoP).
Key Skills
Ranked by relevance
devops
react
html5
cloud
cicd
microservices
sql server
responsive
server
git
sql
restful apis
javascript
kubernetes
typescript
postgresql
angular
docker
swift
kafka
tdd
vue
ui
ux
c
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Login to Apply
- Posted
- Sep 11, 2025
- Type
- Full-time
- Level
- Mid-Senior
- Location
- Cracow
- Company
- StoneX Group Inc.
Industries
Financial Services
Categories
Engineering
Information Technology
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