11 blockchain jobs in Sofia

The blockchain security team is working on core Blockchain technologies, Smart contracts and other building blocks that allow us to create unique products for our users.  They specialise in secure development, confidential computing technology and advanced cryptographic techniques and with multiple patents granted to this team, this is a key strategic investment for Crypto.com.  It is a unique opportunity to work on the future of this exciting industry. Responsibilities Primary responsibilities to ensure the application is running at all times in Production Manages other non-production environments such as pre-production/staging.  Strong understanding of application features and all supported blockchains Work closely with engineers both application and infrastructure to ensure good understanding of what will be pushed to production environments Ability to apply fixes, improvements or optimization on the applications and infrastructure Identify any issues...

The blockchain security team is working on core Blockchain technologies, Smart contracts and other building blocks that allow us to create unique products for our users.  They specialise in secure development, confidential computing technology and advanced cryptographic techniques and with multiple patents granted to this team, this is a key strategic investment for Crypto.com.  It is a unique opportunity to work on the future of this exciting industry. Responsibilities Primary responsibilities to ensure the application is running at all times in Production Manages other non-production environments such as pre-production/staging.  Strong understanding of application features and all supported blockchains Work closely with engineers both application and infrastructure to ensure good understanding of what will be pushed to production environments Ability to apply fixes, improvements or optimization on the applications and infrastructure Identify any issues...

Who are we? At OpenPayd, we are building a universal financial infrastructure to power the growth of the digital economy. Our rails-agnostic approach empowers any business to move and manage money globally - across both traditional rails and stablecoins — at scale, and in real time. The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services – all via a single API. A global network of licences alongside our best-in-class tech is why we're trusted by 800+ enterprise clients to process over €130 billion annually. How are we building our teams? We’re looking for self-starters who are experts in their fields and who are eager to learn new things. We work hard, offering rapid skills development and the opportunity to learn everything about the flourishing payments industry. Our leadership places a high value on continuous development, both...

About Paysafe Paysafe is a leading payments platform with an extensive track record of serving merchants and consumers in the global entertainment sectors. Its core purpose is to enable businesses and consumers to connect and transact seamlessly through industry-leading capabilities in payment processing, digital wallet, and online cash solutions. With 29 years of online payment experience, an annualized transactional volume of $152 billion in 2024, and approximately 3,000 employees located in 12+ countries, Paysafe connects businesses and consumers across 260 payment types in 48 currencies around the world. Delivered through an integrated platform, Paysafe solutions are geared toward mobile-initiated transactions, real-time analytics and the convergence between brick-and-mortar and online payments. Further information is available at www.paysafe.com. As the Director for Consumer Risk Data Sciences at Paysafe, you will play a pivotal role that involves leveraging advanced data...

Stand out and drive the next generation of wealth. Define the digital assets industry. Raise the bar for trust, transparency, and client success. Make your mark. Nexo is a premier digital assets wealth platform designed to empower clients to grow, manage, and preserve their crypto holdings. Our mission is to lead the next generation of wealth creation by focusing on customer success and delivering tailored solutions that build enduring value, supported by 24/7 client care. Since 2018, Nexo has provided unmatched opportunities to forward-thinking clients in over 150+ jurisdictions. With over $11+ billion in AUM and $371+ billion processed, we bring lasting value to millions worldwide. Our all-in-one platform combines advanced technology with a client-first approach, offering high-yield flexible and fixed-term savings, crypto-backed loans, sophisticated trading tools, and liquidity solutions, including the first crypto debit/credit card. Built on deep industry expertise, a...

Stand out and drive the next generation of wealth. Define the digital assets industry. Raise the bar for trust, transparency, and client success. Make your mark. Nexo is a premier digital assets wealth platform designed to empower clients to grow, manage, and preserve their crypto holdings. Our mission is to lead the next generation of wealth creation by focusing on customer success and delivering tailored solutions that build enduring value, supported by 24/7 client care. Since 2018, Nexo has provided unmatched opportunities to forward-thinking clients in over 150+ jurisdictions. With over $11+ billion in AUM and $371+ billion processed, we bring lasting value to millions worldwide. Our all-in-one platform combines advanced technology with a client-first approach, offering high-yield flexible and fixed-term savings, crypto-backed loans, sophisticated trading tools, and liquidity solutions, including the first crypto debit/credit card. Built on deep industry expertise, a...

Stand out and drive the next generation of wealth. Define the digital assets industry. Raise the bar for trust, transparency, and client success. Make your mark. Nexo is a premier digital assets wealth platform designed to empower clients to grow, manage, and preserve their crypto holdings. Our mission is to lead the next generation of wealth creation by focusing on customer success and delivering tailored solutions that build enduring value, supported by 24/7 client care. Since 2018, Nexo has provided unmatched opportunities to forward-thinking clients in over 150+ jurisdictions. With over $11+ billion in AUM and $371+ billion processed, we bring lasting value to millions worldwide. Our all-in-one platform combines advanced technology with a client-first approach, offering high-yield flexible and fixed-term savings, crypto-backed loans, sophisticated trading tools, and liquidity solutions, including the first crypto debit/credit card. Built on deep industry expertise, a...

Stand out and drive the next generation of wealth. Define the digital assets industry. Raise the bar for trust, transparency, and client success. Make your mark. Nexo is a premier digital assets wealth platform designed to empower clients to grow, manage, and preserve their crypto holdings. Our mission is to lead the next generation of wealth creation by focusing on customer success and delivering tailored solutions that build enduring value, supported by 24/7 client care. Since 2018, Nexo has provided unmatched opportunities to forward-thinking clients in over 150+ jurisdictions. With over $11+ billion in AUM and $371+ billion processed, we bring lasting value to millions worldwide. Our all-in-one platform combines advanced technology with a client-first approach, offering high-yield flexible and fixed-term savings, crypto-backed loans, sophisticated trading tools, and liquidity solutions, including the first crypto debit/credit card. Built on deep industry expertise, a...

About Us MM Fintech is at the forefront of redefining the future of finance. As a leading force in the fintech space, we’re building next-generation platforms that blend financial inclusion, security, and cutting-edge technology. With a strong focus on blockchain, digital assets, and crypto infrastructure , we're pioneering solutions that power the decentralized economy. As we scale our impact, we’re looking for visionary leaders to help drive engineering excellence in the fast-evolving world of cryptocurrency. Join us on this transformative journey — where innovation meets regulation, and technology powers financial freedom. Desired Skills and Experience Education & Experience : Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. Minimum of 4 years in backend development , with at least 2 years in a technical leadership or engineering management role , preferably in fintech or blockchain...

We are a leading trading platform that is ambitiously expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutting-edge technology and seamless client experience. We deliver only the best, so we are always in search of the best people to join our ever-growing talented team. Our Backend Engineering team plays a pivotal role in ensuring the robustness, speed, and security of our Product. Dedicated to enhancing performance, providing a best-in-class user experience, ensuring compliance, and safeguarding data, the team’s efforts directly impact our ability to offer clients a seamless and secure trading journey. We are seeking a skilled Java Backend Engineer to join our growing team. You will be responsible for developing and optimising our backend systems that power our Product. You will work closely with cross-functional teams to ensure the reliability, scalability, and security of our systems, with a focus on enhancing the...

Our Compliance Infrastructure team is responsible for the development and maintenance of systems, processes, and technologies that support our organization's compliance activities. This includes the Global Financial Crimes and Compliance Operations team, which manages financial crime risk and ensures compliance with anti-money laundering (AML), sanctions, and anti-bribery and corruption (ABC) regulations. Key Responsibilities CDD & Risk Oversight -Manage end-to-end onboarding, periodic reviews, and trigger event reviews for retail clients.-Supervise the application of risk ratings.-Oversee sanctions, PEP, adverse media, and law enforcement screening processes ongoing basis. Cross-Functional Collaboration -Act as the bridge between Compliance, Operations, and Product teams, ensuring that due diligence requirements are clearly understood and effectively integrated into business processes.-Provide expert input into product development and...