Blockchain.com is connecting the world to the future of finance. As the most trusted and fastest-growing global crypto company, it helps millions of people worldwide safely access cryptocurrency. Since its inception in 2011, Blockchain.com has earned the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.We’re looking for a highly motivated Software Engineering Intern to join our Activation team at Blockchain.com. This is a unique opportunity to gain hands-on experience with critical systems that ensure our users are onboarded securely, efficiently, and in compliance with global regulations. You’ll contribute to backend systems primarily in Kotlin, and gain exposure to the technologies and processes behind identity verification, fraud detection, and compliance automation.
Duration: 6-month internship
WHAT YOU WILL DO
Support the design and development of onboarding and identity verification systems in Kotlin.
Assist in integrating with third-party providers such as Sumsub and Veriff to improve verification flows.
Write clean, maintainable code under the guidance of experienced engineers.
Contribute to unit and integration testing, and support observability for KYC systems.
Collaborate with engineering, compliance, and product teams to implement features and solve problems.
Gain exposure to event-driven systems and understand how we scale secure onboarding for millions of users.
WHAT YOU WILL NEED
Working knowledge of Kotlin or Java, with a curiosity to learn more.
Basic understanding of APIs, PostgreSQL, and RESTful design.
Strong problem-solving mindset and eagerness to learn in a fast-paced environment.
Good communication and collaboration skills – you’ll be working with cross-functional teams.
BONUS SKILLS
Interest in fintech, crypto, or regulatory tech.
Familiarity with Kafka, gRPC, or microservice architectures.
Awareness of fraud prevention, KYC flows, or identity verification tools.
WHY JOIN US
Build real-world systems that impact the safety and growth of a global platform.
Learn how cutting-edge compliance technology works in high-scale, regulated environments.
Work alongside passionate engineers and gain mentorship from domain experts.
Opportunity to transition into a permanent role based on performance.
This internship is perfect for someone passionate about backend systems and curious about the intersection of technology, compliance, and user experience within financial platforms.
COMPENSATION & PERKS
Competitive full-time salary for your level of experience
Based in our Paris office with four days per week in-person collaboration
ClassPass to keep you moving and well
Apple equipment to do your best work
The chance to make a real impact and grow your career at a fast-scaling global crypto company
Flexible, modern, and people-first work culture
Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time.
You may contact our Data Protection Officer by email at dpo@blockchain.com. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment.
Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf. Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses.
Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.