Senior Software Engineer (C++)

OANDA Corporation; Kraków; On-site; PLN 250,000 - 360,000; Full time

Job summary

OANDA is seeking a Senior Backend Engineer to architect and implement high‑performing C++/Python systems for our trading platform in Kraków. You will contribute to data services, microservices, and risk management components that power thousands of customers.

You will work in a Linux environment, collaborating with engineers and product teams to design scalable solutions, participate in code reviews, and own CI/CD pipelines while mentoring others.

Qualifications

• MSc/BSc in CS or related field; strong fundamentals in software engineering.
• Proven experience building backend services in C++ and Python.
• Experience with multithreading, concurrency, and scalable architectures.

Responsibilities

• Develop and maintain backend services in a Linux environment.
• Collaborate with business and technical leadership to design and implement systems.
• Own CI/CD pipelines and release processes; mentor teammates.

Skills

C++ development

Python programming

Multithreading

Data structures & algorithms

Clean code

Education

Bachelor's degree in Computer Science or related field

Tools

Linux

CI/CD tooling

Job description

Fancy helping to shape the future of FinTech? We have always been innovators. In 1996 we were the first company to share exchange rate information, free of charge on the internet. Today, we are a world leading online trading group. Join us to:

• Help build the future of online trading
• Be part of a culture driven by integrity and global impact
• Become part of an award-winning company - check out our full list of awards here

We are only as good as our people. Luckily, our people are the best. Join us!

How do we work?

We’re looking for a Sr. Backend Engineer with experience as a developer and architect of C++ applications. You’ll be joining the OANDA engineering team that owns the backend of a renowned trading platform used by our customers to analyse global currency markets and trade forex and CFDs. Your contributions will impact the thousands of customers who trade billions of dollars in volume on our platform every day. You’ll also leverage the latest technologies to build and deploy our systems. The Backend Team works with modern C++ and Python to build high performing and reliable solutions enabling our customers to trade more effectively while improving profitability for the company through our in-house risk management system.

As our Senior Software Engineer, you will:

• Work within a Linux environment to research, design, test, implement, deploy, and maintain online and backend trading and data services infrastructure applications.
• Collaborate closely with OANDA’s business and technical leadership to understand business requirements and with development team members to design and implement applications, systems, and programs.
• Shepherd releases from creation to release, including maintenance and improvement of our CI/CD pipelines.
• Team mentoring
• Joining on call support occasionally (rotation based, once per month)

As our new Backend Engineer, you will bring:

• A university degree in computer science, computer engineering, or a related field and possibly a graduate degree.
• A strong interest in teamwork combined with the drive and ability to contribute at the individual level.
• The ability to promote your own continuous learning by feeding new ideas back through the team.
• Flexibility and a willingness to work with changing priorities.

What skillset do you need to be successful in this role?

• Solid application development experience using C++
• Experience developing applications using Python
• Solid understanding of data structures and algorithms
• Experience developing applications using multithreading and concurrency
• Basic understanding of databases
• Solid knowledge of software engineering best practices and design patterns
• CI/CD and deployment automation
• Microservices and REST architecture
• The ability to write well-documented, clean code

Nice to have:

• Linux operating systems
• Kafka
• Prometheus and Grafana
• GCP/GKE
• Terraform
• Ansible
• Claude/Gemini

At OANDA, to help us efficiently process applications, we use AI-driven tools to help source and rank candidates based on professional experience and skills. While these tools provide recommendations, our recruitment process remains human-centric: all final shortlisting and hiring decisions are made by OANDA team. You have the right to request a human review of your application.

OANDA Global Corporation is a diverse and global team with offices around the world. We value the unique skills and experiences each individual brings to OANDA. We are committed to creating and sustaining a collegial work environment in which all individuals are treated with dignity and respect and one which reflects the diversity of the community in which we operate. We provide an inclusive and accessible environment for everyone. Candidates selected for an interview will be contacted directly. If you require accommodation during the recruitment and selection process, please let us know. We will work with you to provide as seamless a recruitment experience as possible.

Learn more about our culture here.

Review OANDA Privacy Policy and learn more about how we treat your personal data and protect your privacy.

Make your first step toward a positive change in your career with OANDA OANDA aims to transform all aspects of how the world interacts with currencies, whether that be trading or utilizing currency data and information. We’ll do this our way – connecting and collaborating with the best and most innovative to grow quickly and globally. We strive to do more than just our jobs, focus our actions on collective goals and dare to seek out innovation and creativity. All this to continue our obsession with providing the best experience for our customers. Innovation has been at the heart of everything we do! From our roots in 1997 providing free currency exchange information over the internet to launching an award-winning global trading business. We work together to drive the future of currency data solutions and trading technology. Our customers can invest in around 200 financial instruments including currencies, shares (over 1300) and commodities leveraging intelligent support and the newest technologies. What is more, we are now offering a batch of popular cryptocurrencies in the US! - OANDA is now a major global player. We are proud to be recognized! We put our clients at the heart of our innovation and services, which has earned us some of the most recognized awards in the industry.