Senior Protocol Engineer - Distributed Systems & Blockchain Cryptography

Join Veriff as we venture into the innovative realm of identity verification through agentic AI systems capable of reasoning, acting, and functioning securely in environments characterized by high trust.We are assembling a compact, high-impact team dedicated to exploring and operationalizing agentic capabilities across identity verification, know your audience (KYA), risk assessment, and automation workflows.As a Founding Software Engineer, you will play a pivotal role in developing this initiative from the ground up.You will contribute to safeguarding honest individuals online by:Designing and constructing agentic systems that can:Utilize various toolsReason through complex, multi-step workflowsFunction under stringent compliance and safety standardsPrototyping and deploying workflows powered by large language models (LLMs)Creating internal evaluation frameworks to ensure agent reliabilityDefining system architecture for scalable and secure AI servicesCollaborating closely with product, risk, and compliance teamsTransforming abstract ideas into functional systems

Join Bolt as a Senior Design System Engineer and play a pivotal role in shaping the technical architecture of our multi-platform design system. Collaborate closely with design system designers and platform engineering teams to elevate user interface development at Bolt.As part of our dynamic Web Architecture and Visual Experience (WAVE) team, you will drive core design system initiatives from an engineering perspective, ensuring our design foundations are scalable across all platforms and products. You will also contribute to the design system strategy, bringing engineering alignment and delivering high-quality code.Take ownership of significant projects that span multiple platforms and have the potential to transform how Bolt approaches the delivery of user interfaces. If you're passionate about accessibility, you will have the opportunity to influence product teams across Bolt to prioritize accessibility in their workflows and implement practical enhancements that benefit hundreds of millions of users.

The WowAs a Systems Engineer, you will play a vital role in managing and enhancing our corporate IT infrastructure, ensuring optimal performance both on-premises and in the cloud. You will collaborate with your team of Systems and DevOps Engineers to develop corporate services, improving operational best practices and driving innovation through modern technologies. Your expertise will help us address diverse business requirements across multiple locations, ensuring that our services are delivered professionally while optimizing costs. You are a proactive team player, capable of working independently, and are eager to share your knowledge and insights.A taster of what you will be involved with:Develop and maintain corporate infrastructure aligned with Betsson’s business goals.Create and update documentation, ensuring knowledge sharing through online tools.Oversee systems and service monitoring to ensure optimal performance.Drive continual improvement initiatives within the team.Provide technical expertise in the application of operational procedures.Assist in designing technical solutions to meet evolving business needs.Contribute to planning and executing maintenance and installation tasks.Identify operational challenges and collaborate on their resolution following established standards.Manage Betsson’s Cloud and On-Prem Infrastructure, including Active Directory and Office 365.Implement standardized procedures for system backups and data restoration.Serve as the primary contact for IT support, infrastructure projects, and vendor coordination.Take responsibility for the maintenance of all IT equipment within the office, including server rooms, UPS, meeting room AV setups, and mobile phones.Be available for on-call duties and shift work as required by business operations.

Wise is looking for a Senior Software Engineer to help improve the Screening Engine in Tallinn. This role centers on building and refining systems that support effective, reliable screening processes. What you will do Work on software development projects that strengthen and streamline the Screening Engine Collaborate with colleagues from different disciplines to design and deliver solutions Focus on performance, reliability, and usability in every aspect of your work Who you are Experienced in software engineering, with a track record of building dependable systems Comfortable working across teams to solve complex problems Motivated to keep systems efficient and user-friendly This position is based in Tallinn and centers on Wise’s Screening Engine platform.

Role Overview Wise is looking for a Software Engineer focused on screening processes in Tallinn. This role centers on building and improving screening software that supports both user experience and operational efficiency. What You Will Do Work closely with teams across disciplines to design and implement screening solutions Contribute to the development of software that helps streamline and strengthen screening workflows Help ensure our technology meets Wise’s standards for reliability and usability

Restream is seeking a talented Frontend Software Engineer to join our dynamic Studio Team. In this exciting role, you will tackle intricate challenges and help create world-class products. Your responsibilities will include developing new features, enhancing the user interface of our application, and bolstering the reliability of our systems as we continue to grow. Working closely with a team of skilled engineers, you will drive processes and enhance user-facing features. You possess a deep understanding of the significance of simplicity and reliability in software development and consider the impact of every decision on these aspects. We thrive in a small team environment where each member brings considerable value to the table.Your ResponsibilitiesCreate stunning interfaces and interactions within Restream's web servicesDesign and implement UI and business logic for both new and existing featuresCollaborate with product designers to build exceptional and user-friendly UI/UXEngage in code reviews, giving and receiving feedback with your teamStay up-to-date with emerging technologies to uncover hidden opportunities in our ecosystemQualifications We SeekA proactive, entrepreneurial mindset that drives high-quality projects to completion swiftlyStrong design sensibility, attention to detail, and a passion for delivering an outstanding user experienceProficient in JavaScript, TypeScript, and recent ECMAScript specifications (familiarity with other programming languages is a bonus)Expertise in React and its primary state management systemsExperience with CSS preprocessors such as LESS or SASSFundamental backend knowledge: Node.JS, REST API construction, and working with relational or NoSQL databasesComfortable with TypeScript, MobX, AWS, Linux, Docker, Kubernetes, and continuous deployment workflowsExcellent written and verbal communication skillsSelf-motivated, analytical, and effective in collaborative team settingsFounded in 2015, Restream has a fervent mission to empower creators to amplify their voices. As the leading multistreaming solution, Restream serves over 10 million users worldwide, enabling them to reach their audiences across multiple platforms.

Lightspark is revolutionizing the global payment landscape by developing an open payment protocol for the Internet, enabling money to transfer as quickly and easily as data. Through our innovative enterprise tools such as Grid, Node, and Spark, businesses can facilitate instantaneous, secure money transactions at a significantly reduced cost, from anywhere in the world.Headquartered in Los Angeles, California, Lightspark is committed to pioneering the future of payments by harnessing the potential of the Bitcoin network and exploring the depths of the Lightning Network. Our mission is to create a secure and robust payment infrastructure that seamlessly connects traditional finance with cryptocurrency. This exciting role is part of Striga, a Lightspark company located in Tallinn, Estonia, where we are developing Lightspark's European payments platform to link fiat and crypto systems for efficient cross-border transactions.We are on the lookout for a Senior Fullstack Engineer who thrives in dynamic startup environments, relishes the challenge of rapid coding and deployment, and is eager to contribute to a culture of engineering excellence. As a key member of our Lightspark Payments Europe team, you will be responsible for designing, leading, and enhancing the user experience for our enterprise products, automating our Connect SDKs, and implementing new features for our APIs and websites.

The Engineering team at Veriff is dedicated to developing the innovative software that addresses the online identity crisis effectively and at scale. As we navigate a fast-paced and challenging market, we are excited to invite a talented Senior Software Engineer to join our Customer Portal team. This essential team is responsible for building and maintaining a robust self-service platform utilized by thousands of SaaS and Enterprise clients. Our product empowers customers to seamlessly procure, manage, and control their identity verification services efficiently within their daily operations.In this pivotal role, you will collaborate closely with stakeholders to ensure an exceptional experience for our users. We are not just looking for an engineer; we seek a visionary leader ready to elevate the team and tackle challenges head-on. Join us in this thrilling journey!Your contributions will include:Architecting a Multi-Product Engine: Transitioning from a single-product tool to a self-service platform catering to 10+ services, developing billing and configuration logic that enables customers to launch without manual assistance.Balancing Enterprise & Scale: Resolving the challenges between custom requirements of large accounts and a high-volume self-serve funnel, designing abstractions to meet complex SLAs while maintaining platform performance.Modernizing while Shipping: Strategically overhauling legacy systems to keep our core infrastructure contemporary and ensuring new features are delivered effectively.Engineering Cross-Team Alignment: Coordinating with Identity, Fraud, and Trust teams to ensure architectural consistency and code quality across all products in the portal.Amplifying Delivery with AI: Leading the initiative to integrate AI-enhanced workflows, transforming ambitious goals into tangible outcomes.

About Checkout.com Checkout.com powers payments for major brands such as eBay, ASOS, Klarna, Uber Eats, and Sony. Our technology handles billions of online transactions each year, making the checkout experience smooth for businesses and their customers. With 19 offices across six continents and headquarters in London, we support a global client base while maintaining a strong culture of innovation and high standards. Role Overview: Staff Software Engineer - Financial Infrastructure The Financial Infrastructure team at Checkout.com is looking for a Staff Software Engineer in Tallinn. This role centers on technical leadership for our cloud-based finance platform. The position shapes architectural standards and works closely with product and engineering leaders to set direction for both technical and product strategies. The team automates complex financial processes, focusing on data integrity, detail, and scalability to support our global growth. Main Responsibilities Define the long-term technical vision and strategy for Financial Infrastructure, ensuring our systems scale for future needs. Mentor engineering teams and provide guidance on tackling challenges in distributed systems. Spot opportunities for improvement and implement changes that raise engineering standards and foster ongoing progress. Design, build, and refine core financial data processing platforms with a focus on reliability and accuracy. Collaborate with Product Managers, finance stakeholders, and engineers to turn complex business needs into effective technical solutions. Lead technical discussions and decision-making, keeping efforts aligned with strategic goals. Learn more about us at Checkout.com.

Join Wise as a Software Engineer in our Treasury team, where you'll be at the forefront of developing innovative solutions that enhance our financial operations. You'll collaborate with cross-functional teams to design, implement, and maintain software systems that support our treasury functions, ensuring that we provide the best services for our users.

Jobgether is looking for a Senior DevOps Software Engineer with expertise in Azure to help shape and maintain cloud infrastructure. This position is based in Estonia and centers on building scalable systems and ensuring reliable deployment pipelines. Role overview This role focuses on designing and implementing Azure-based cloud solutions. The engineer will set up and maintain CI/CD pipelines, aiming to streamline deployments and improve system reliability. System performance optimization will also be a key responsibility. Collaboration and improvement Working closely with colleagues from different disciplines, the engineer will contribute to ongoing enhancements in DevOps processes. The goal is to increase efficiency and support high-quality software delivery across teams. What we look for Experience designing and managing Azure cloud infrastructure Strong background in CI/CD pipeline setup and maintenance Interest in optimizing system performance Ability to collaborate with cross-functional teams Commitment to continuous improvement in DevOps practices

Join Wise as a Software Engineer specializing in screening handling, where you will be part of a dynamic team focused on developing and optimizing our software solutions. Your role will involve collaborating with cross-functional teams to enhance system functionalities, ensuring robust performance, and delivering top-notch user experiences.

The Machine Learning (ML) Platform team at Veriff is at the forefront of creating a robust foundation for the rapid and compliant development of machine learning products. We deliver scalable, observable, and user-friendly systems that are essential for managing data, training models, evaluating performance, and deploying models on a large scale.Having laid the groundwork with our core platform capabilities, we are now poised for significant growth, emphasizing systemic excellence. Our focus includes institutionalizing world-class observability, maximizing cost efficiency, and accelerating our experimentation processes. In this role, you will play a crucial part in aligning our architectural vision with a seamless developer experience for our data science teams.Your Contributions will Drive ML Innovation by:Implementing Observability Frameworks: Crafting tools and templates that enhance visibility into model performance, data drift, and training metrics, ensuring our continuous retraining processes are robust.Engineering for Efficiency: Designing systems to monitor and optimize computing costs and training performance, enabling sustainable scaling of our ML initiatives.Building Experimentation Tooling: Executing the roadmap for internal tools that empower Data Scientists and ML Engineers to iterate and deploy experiments with ease.Developing SaaS-grade ML Services: Writing high-quality, maintainable Python code to construct and automate services integral to our ML lifecycle.Bridge-Building: Collaborating with our Staff Engineer to execute architectural designs and partnering with SRE/DevXP teams to ensure our solutions are production-ready and manageable.

Join our dynamic team as a Senior Full Stack Software Engineer in Tallinn. At Bolt, our engineering teams tackle exciting product challenges, including advanced algorithms for demand forecasting, optimal real-time pricing, routing, fraud detection, and the development of distributed systems, among others.As a Senior Full Stack Engineer, you will play a crucial role in architecting, designing, developing, and deploying both backend and frontend systems. Your expertise will primarily be applied through coding in Node.js and TypeScript, although prior experience with Node.js is not a requirement.

Join Wise as a Senior Software Engineer I, where you will play a vital role in enhancing our payment processing platform. Collaborate with a talented team of engineers to develop innovative solutions that streamline financial transactions worldwide. Your expertise will contribute to the growth and efficiency of our systems, ensuring a seamless experience for users.

Join Wise as a Senior Software Engineer I, where you will play a pivotal role in enhancing our Europe Risk and Controls team. You will leverage your expertise in software development to create robust solutions that safeguard our operations against financial risks. Collaborate with cross-functional teams to design, implement, and maintain high-quality software systems that meet industry standards and regulatory requirements.

Join Wise as a Senior Software Engineer I in our Fincrime Requests team, where you'll play a crucial role in building and enhancing our systems to combat financial crime. You will work collaboratively with cross-functional teams to deliver innovative solutions, ensuring compliance with regulatory requirements while maintaining a seamless user experience.

At Veriff, we empower businesses to connect with trustworthy individuals online through our advanced identity verification technology. We verify over 10,000 government-issued documents from more than 190 countries, scaling our operations rapidly. This translates to millions of verified identities annually, ensuring online safety for countless users globally. We are committed to setting a new standard for trust on the internet.As a Senior Software Engineer, you will play a pivotal role beyond coding; you will design scalable architectures, mentor emerging engineers, and significantly impact our business performance. We seek innovative problem solvers to help us achieve our goals.The Platform Area addresses cross-domain business requirements via a unified platform infrastructure. The advancement of the Veriff Platform is essential to our sustained success. This platform enables us to swiftly adapt our technology to the fast-paced identity verification landscape while meeting the demands of our teams and clients for innovative solutions. The Veriff platform presents numerous technical challenges and opportunities for scalability, which are critical to maintaining our leadership in the industry.

About the Role Wise is seeking a Software Engineer focused on Business Funds Risk to join the team in Tallinn. This role centers on building and improving systems that protect the integrity and security of Wise’s financial operations. What You’ll Do Work closely with colleagues from different teams to design and implement solutions for risk management. Develop tools and features that support secure and efficient financial processes. Contribute to efforts that keep Wise’s business funds safe and compliant. Who You’ll Work With This position involves regular collaboration with engineers, product managers, and risk specialists across Wise. Together, the team aims to strengthen Wise’s ability to manage business funds securely and efficiently.