Software Engineer - Frontend - Payments

Kraken; Poland; On-site; PLN 180,000 - 300,000; Full time

Job summary

Kraken is seeking a Senior Software Engineer to join the Payments & Blockchain team in Poland. You will design, develop, and maintain high-quality payment processing systems using React.js and related tech, focusing on speed, security, and reliability.

You will mentor engineers, influence technical decisions, integrate with a growing network of payment providers, and help ensure compliance and security across financial software.

Qualifications

• 5+ years of software development experience, web/mobile focus.
• Strong JavaScript/TypeScript and React/React Native skills.
• Experience with Next.js, RESTful APIs, and WebSockets.
• Familiarity with frontend testing frameworks and modern build tooling.
• Solid understanding of UI/UX principles and user-centered design.

Responsibilities

• Design, develop, and maintain high-quality payment processing systems using React.js and related technologies.
• Build seamless transaction experiences prioritizing speed, security, and reliability.
• Enable smooth onboarding experiences for users interacting with payment systems.
• Develop features to enhance engagement, retention, and loyalty within payments ecosystem.
• Lead by example, craft secure, scalable financial software, and mentor engineers.

Skills

5+ years exp

JavaScript/TypeScript

React/React Native

Next.js

RESTful APIs

WebSockets

UI/UX fundamentals

English comms

Tools

Next.js

REST APIs

WebSockets

React Native

Frontend testing

Build pipelines

Job description

Building the Future of Open Finance Payward - the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks - has spent the last 15 years building one of the most modern and globally accessible financial infrastructure platforms in the industry, built to advance an open, global financial system.

Before you apply, we encourage you to explore our culture page to understand what drives us and how we work.

The Team

We are currently seeking an experienced Senior Software Engineer to join our growing Payments & Blockchain team to be focused on our payments systems. The Payments & Blockchain team is responsible for the first and last mile of every dollar (digital or fiat) that goes in or out of Kraken.

Join our Payments team to help integrate Kraken’s systems with an ever-expanding universe of payment providers.

As a member of this team, your focus is on protecting client funds. You will be responsible for building systems that communicate with various blockchains to enable the timely processing of client transactions, while also ensuring the safety and security of all funds on the exchange.

The Opportunity

• Design, develop, and maintain high-quality payment processing systems using React.js and other relevant technologies
• Build and refine seamless transaction experiences that optimize fund transfers for speed, security, and reliability
• Ensure an efficient and intuitive onboarding experience for users interacting with payment systems, reducing friction and improving trust
• Develop innovative features that enhance engagement, retention, and loyalty within the payments ecosystem
• Set the standard for high-quality, secure code and lead the development of complex financial software systems
• Influence technical decisions, contribute to strategy discussions, and shape product/domain decisions with a deep understanding of financial systems and security best practices
• Mentor engineers, foster a culture of technical excellence, and drive process improvements in financial software development
• Design and implement scalable, maintainable, and fault-tolerant financial systems, ensuring compliance and security best practices

What You Bring

• 5+ years of experience in software development, with a focus on web and mobile applications
• Deep understanding of JavaScript/TypeScript and proficiency with React and React Native frameworks
• Experience with Next.js, RESTful APIs and WebSockets
• Experience with frontend testing frameworks
• Familiarity with modern front-end build pipelines and tooling
• Strong understanding of UI/UX best practices and principles
• Experience within a large technology organization or fast growing startup
• Strong written and verbal communication skills in English

Nice to haves

• Knowledge of the cryptocurrency industry and blockchain technology

Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis.

Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution.

We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.

Payward is powered by people from around the world and we celebrate the diverse talents, backgrounds, contributions, and unique perspectives that everyone brings to the table. We hire based on merit, seeking out people with the right abilities, knowledge, and skills for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgeable about crypto.

We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Results are considered alongside experience and interviews, and are not the sole basis for any employment decision.

As an equal opportunity employer, we don't tolerate discrimination or harassment of any kind, whether based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status, or any other protected characteristic as outlined by federal, state, or local laws.

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