Principal Backend Engineer at Trading 212 | Sofia

Join Our Mission to Empower Wealth BuildingAt Trading 212, we are revolutionizing the trading and investing landscape by delivering outstanding products that our users adore. Our commitment to fostering a culture of excellence and rapid innovation is pivotal to our success.Currently, we proudly serve over 4.5 million clients, managing assets exceeding €30 billion - a testament to our remarkable growth and the trust we've established in a brief period.Your RoleMake a significant impact on millions of users with each production deployment.Contribute to our technical excellence vision by enhancing our frontend monorepo, which supports Trading 212's iOS, Android, Web, and Desktop applications with an emphasis on efficiency and code reuse.Collaborate closely with the design and backend teams to ensure the highest quality of our products, as effective communication is essential.Take ownership of the project’s health and maintainability, reflecting our commitment as a product-centric company.Required QualificationsProficient in JavaScript with an in-depth understanding of the language.Significant experience with React or React Native, and TypeScript.Strong comprehension of HTTP protocols.Exceptional attention to detail.Excellent communication skills.Preferred QualificationsExperience in a product-focused company.Advanced TypeScript knowledge, including generics, discriminated unions, and conditional types.Familiarity with CI/CD processes.Experience in native mobile app development for either iOS or Android.Expertise in high-end web development and optimizations.Ongoing or completed Computer Science education.Our Technology StackTypeScriptReact NativeReact QueryZustandNxKotlinSwift What We ProvideEngaging challenges that foster professional growth and development.Opportunities to work with cutting-edge technologies in a dynamic environment.

Join Us in Our Mission to Empower Wealth BuildingAt trading212, we are redefining the landscape of trading and investing by delivering outstanding products that resonate with our users.Our commitment to fostering a culture of excellence and agility drives our success.Currently, we proudly serve over 4.5 million clients, managing more than €30 billion in assets - a testament to the trust and scale we have achieved in just a few years.Your RoleMake a significant impact on millions of users with every production change you implement.Contribute to our pursuit of technical excellence by developing a frontend monorepo that powers Trading 212’s iOS, Android, Web, and Desktop applications with a focus on efficiency and code reuse.Take ownership of project health; as a product-focused company, maintaining code quality is vital for our longevity.Collaborate within compact, autonomous teams that operate on short release cycles, ensuring agility and high performance without compromising on quality.Engage in mutual learning and knowledge sharing with your colleagues, as we believe in growing together through honest feedback. Essential SkillsProficient in HTML, CSS, and JavaScript.Experience with React/React Native and familiarity with one or more state management libraries.Strong attention to detail.Excellent communication skills. Preferred QualificationsExperience with advanced TypeScript.Currently pursuing or possess a degree in Computer Science. What We OfferOpportunities for rapid personal and professional growth through challenging projects.The chance to make a substantial impact by developing innovative services utilized by millions of investors.Collaborate with a team of intelligent, spirited, and high-achieving colleagues, all focused on a shared vision.A dynamic environment where creativity and ideas are highly valued.Recognition and appreciation for your unique talents and insights.A competitive compensation package.

Role overview The Senior React Native Engineer with Node.js at Tieto Tech Consulting will focus on building mobile applications in Sofia. This position involves close collaboration with colleagues from various backgrounds to deliver new solutions for clients and projects. What you will do Develop mobile applications using React Native Support backend functionality with Node.js Work alongside cross-functional teams throughout each project Write code that is clean, efficient, and easy to maintain Share technical insights and contribute to ongoing projects Requirements Extensive experience with React Native and Node.js Track record of delivering high-quality code Comfortable working in collaborative, team-focused environments This position provides a direct role in shaping important projects at Tieto Tech Consulting.

Founded with a clear mission to democratize investing, Trading 212 has evolved into a trusted platform for over 4.5 million clients, managing assets exceeding €30 billion. Our commitment to excellence and rapid innovation fuels our drive to create intuitive, powerful products that empower individuals to grow their wealth. We believe investing should be straightforward, impactful, and accessible to everyone.The RoleAs a Product Designer, you will play a crucial role in defining the user experiences that millions rely on for confident investing. You will be directly involved in designing and implementing features that transform complex financial tools into user-friendly interfaces. Collaborating closely with product managers and engineers, you will rapidly translate ideas into tangible designs.This position is perfect for those with some experience who are eager to develop their design skills, expand their product knowledge, and make a significant impact on users daily.Your ResponsibilitiesDesign and implement key features in our app, ensuring exceptional user experiences.Actively engage in the design process, from initial concepts to detailed UI.Collaborate closely with product managers and engineers to deliver high-quality work swiftly.Present your designs and embrace feedback as a means for ongoing improvement.Commit to continuous growth as a designer, enhancing your skills and knowledge daily.Contribute to maintaining our design system to ensure product consistency.Your QualificationsAt least 2 years of experience in designing impactful digital products.A portfolio demonstrating strong visual design capabilities and attention to detail.Strong communication and teamwork skills.Self-motivated and proactive in driving projects forward.A genuine desire to learn and expand your expertise.Proficiency in Figma.Preferred QualificationsExperience in fintech or industries with strict compliance requirements.Background in developing and maintaining design systems.

As part of the global technology organization TietoEVRY, MentorMate specializes in crafting robust technical solutions that facilitate large-scale digital transformation. Our approach integrates strategic insights, innovative design, and exceptional engineering to create advanced applications. With a strong foundation in enterprise web and mobile development, quality engineering, technical architecture, human-centered design, cloud computing, DevOps, data management, and analytics, we empower our team to engage in significant global projects for well-known brands. We appreciate every team member and celebrate our collective achievements through flexible work arrangements, competitive compensation and benefits, and excellent career advancement opportunities within our extensive international team.Role OverviewWe are in search of a skilled React Native Engineer to join our dynamic team and spearhead the development of high-quality mobile applications. You will be instrumental in designing and implementing scalable, efficient, and user-friendly mobile solutions utilizing React Native, with a strong focus on modern JavaScript (ES6+), state management, and clean architecture. This position is perfect for an individual who thrives in a collaborative atmosphere, enjoys tackling intricate challenges, and is dedicated to delivering impactful solutions.

Join Tieto Tech Consulting, a prominent player in the global technology landscape, where we specialize in crafting robust technical solutions that facilitate large-scale digital transformation. At MentorMate, our focus is on combining strategic insights, innovative design, and exceptional engineering to deliver outstanding results. Our expertise spans enterprise web and mobile development, quality engineering, technical architecture, human-centered design, cloud solutions, DevOps, data analytics, and more. Here, you will have the opportunity to contribute to impactful projects for renowned global brands, while enjoying flexible working models, competitive compensation, and ample opportunities for professional growth within a diverse team of experts worldwide.About the RoleWe are seeking a talented React Native Engineer to enhance our dynamic team and take charge of developing high-quality mobile applications. This role involves designing and implementing scalable, performant, and user-friendly mobile solutions using React Native, with a strong focus on modern JavaScript (ES6+), effective state management, and clean architecture. Ideal candidates are those who excel in collaborative settings, enjoy tackling intricate challenges, and are passionate about delivering meaningful solutions.

Our Vision: Empowering Wealth Creation for AllAt Trading 212, we are revolutionizing the landscape of trading and investing by crafting innovative products that resonate with our users.Our success is rooted in a culture that values excellence and rapid execution.Currently, we are proud to support over 4.5 million clients, managing assets exceeding €30 billion, highlighting the trust and scale we have achieved in a short span.Your RoleDesign visually compelling solutions that authentically reflect the brand's identity and communicate our message across multiple platforms.Enhance user experience by ensuring visual consistency, engagement, and alignment with our strategic aims.Transform insights from business and user domains into innovative and user-focused visual concepts that strengthen Trading 212's market position and boost user satisfaction.Present and defend your creative choices during peer review sessions, collaborating closely with our Growth team and fellow designers.Articulate your design decisions and rationale to stakeholders, assessing feedback and making timely adjustments as needed.Incorporate new tools and workflows to enhance the design process.Work autonomously and take full ownership of your projects. QualificationsDesign Expertise: Profound understanding of layout, typography, color theory, and illustration, with the capability to generate visually captivating designs that effectively convey brand messages.Creative Innovation: A track record in brainstorming and producing original concepts that align with company goals and target demographics while challenging conventional design norms.Narrative Crafting: Skill in creating visual stories that communicate complex ideas or emotions through engaging techniques like infographics, animations, and interactive experiences.Branding Acumen: Strong grasp of branding principles, with the ability to develop cohesive visual narratives across digital and print mediums.Adaptability: Capacity to navigate various design challenges and adapt to the evolving landscape of visual communication.

Role overview Tietoevry seeks a Senior React Native Engineer with solid Node.js skills to join the team in Sofia. The focus is on building new features and enhancing mobile applications, always aiming for a smooth and effective user experience. Collaboration with colleagues from design, product, and engineering is a key part of the work. Main responsibilities Develop and maintain mobile apps using React Native Support backend features with Node.js Work closely with designers, product managers, and fellow engineers to deliver quality solutions Suggest and implement improvements for user experience and app performance Location This role is based in Sofia.

Our mission is to empower everyone to build wealth.At Trading 212, we are transforming the landscape of trading and investing by developing outstanding products that resonate with our users.Our success stems from cultivating a culture of excellence and agility.Currently, we proudly serve over 4.5 million clients and manage assets exceeding €30 billion, reflecting the scale and trust we have rapidly established.Your ResponsibilitiesAssume ownership of quality assurance tasks, including work estimates, execution, and closure initiatives.Engage in design and requirements reviews to ensure product features are testable and user-friendly.Create and develop both manual and automated test cases to guarantee the quality and reliability of our software solutions.Plan, implement, and perform testing across various product domains, including database, integration, functional, and UI/UX testing.Evaluate test results to pinpoint areas for enhancement and suggest process improvements.Ensure compliance with company testing standards throughout all QA activities.Collaborate in small, autonomous teams with rapid release cycles, leveraging agile methodologies while maintaining the right processes for efficiency. QualificationsMinimum of 2 years of experience in software quality assurance, with a focus on test automation.Proficient understanding of software testing methodologies and industry best practices.Competent programming skills in at least one language (e.g., Python, TypeScript, Java).Advanced knowledge of relational database management systems (RDBMS).Strong analytical and problem-solving capabilities.Excellent command of English and superior communication skills.A genuine passion for quality assurance. Preferred QualificationsBachelor's degree in Computer Science, Information Technology, Mathematics, or a related discipline.Familiarity with API testing tools like Postman or SoapUI.Experience testing microservices and distributed systems.

Join Our Mission to Empower Wealth BuildingAt Trading 212, we are redefining the trading and investing landscape by developing outstanding products that resonate with our users. Our commitment to fostering a culture of excellence and agility is pivotal to our growth.In recent years, we have expanded our client base significantly, growing twenty-fold to over 4 million clients, while the assets managed have increased to over €4 billion.Your RoleDesign and implement scalable, self-healing infrastructure and applications in both public and private cloud settings.Utilize IaaS automation tools such as Terraform, AWS CloudFormation, and Ansible.Facilitate the migration of systems from on-premise setups to AWS/GCP.Manage operational and security alerts and incidents.Enhance monitoring systems for infrastructure, applications, and security.Drive continuous performance improvements and troubleshoot critical components.Engage in knowledge-sharing with colleagues to foster collective growth and provide constructive feedback.This position requires shift work, including public holidays.

Join Tietoevry as a Senior Messaging Engineer and play a pivotal role in delivering innovative messaging solutions that enhance communication systems. You will collaborate with cross-functional teams to design, implement, and maintain robust messaging frameworks that ensure seamless data flow and connectivity. Your expertise will be crucial in optimizing performance and reliability while adhering to best practices in software development.

Join Our Mission to Empower Wealth BuildingAt Trading 212, we are transforming the landscape of trading and investing. Our innovative products are designed to empower individuals to build their wealth effectively.We believe that a culture rooted in excellence and rapid innovation is essential to our success.With over 4.5 million clients and more than €30 billion in assets under management, we have quickly established a reputation for scale and trust in the financial industry.Your ResponsibilitiesArchitect and implement dynamically scalable, self-healing infrastructure and applications across public and private cloud platforms.Continuously enhance and automate infrastructure designs to boost resilience and scalability.Utilize IaaS automation tools such as Terraform, AWS CloudFormation, and Ansible.Facilitate the migration of environments from on-premise infrastructure to AWS/GCP.Analyze application and infrastructure KPIs, proactively identifying and addressing bottlenecks and potential issues.Design infrastructures that ensure zero downtime.Drive continuous performance improvements and troubleshoot critical components.Engage in knowledge sharing with colleagues to foster growth as the company evolves, valuing honest feedback as a crucial tool for success.Required QualificationsProven expertise in public cloud platforms, specifically AWS and GCP.In-depth understanding of DevOps principles and their practical application in various workflows; experience with CI/CD tools such as GitHub, GitLab, or Jenkins.Hands-on experience with containerization technologies and orchestration systems, including Docker, Kubernetes, EKS/ECS, and Nomad.Solid understanding of Infrastructure as Code practices using tools like Terraform and AWS CloudFormation.Experience in implementing and maintaining configuration management tools such as Puppet and Ansible.Expertise in relational databases including AWS RDS, MySQL/MariaDB/PostgreSQL, and TimescaleDB.Familiarity with messaging services like Amazon MSK, Amazon MQ, Kafka, and RabbitMQ.Strong proficiency in Python and Bash scripting.Preferred QualificationsExperience with on-premise private cloud infrastructure.

Join Our Mission to Empower Wealth BuildingAt trading212, we are revolutionizing the trading and investing landscape by crafting innovative products that resonate with our users.We champion a culture of excellence and agility, driving our success in a rapidly evolving market.Currently, we proudly serve over 4.5 million clients, managing more than €30 billion in assets—a true testament to the trust we have established in just a few years.Your RoleDesign and implement solutions with a comprehensive understanding of business challenges, our service architecture, and the relevant technologies and infrastructure.Be involved in every phase of the software development lifecycle (SDLC)—from gathering requirements and designing implementation to coding, testing, deploying, and monitoring. You will take full ownership of your code and ensure its continuous improvement.Develop robust solutions focused on performance, scalability, and resilience—your code will operate in a high-stakes environment where downtime, latency, and data loss are unacceptable.Collaborate within small, autonomous teams that operate on short release cycles. We value agile methodologies and a balanced approach to processes that avoid chaos without compromising speed.Engage in knowledge sharing and continuous learning with colleagues. As our company evolves, so must we, and constructive feedback is one of our strongest tools for growth. QualificationsProven experience in developing services within a microservice architecture, having contributed to a highly scalable and performant system comprising over 200 microservices.Strong understanding of common communication protocols. You should be adept at utilizing HTTP/WebSockets and AMQP, with the ability to choose the appropriate protocol based on the context.Familiarity with at least one widely-used web framework, regardless of programming language. Our language-agnostic system empowers engineers to select the most suitable language for specific tasks. We strive for a harmonious balance between cutting-edge technologies and proven solutions.A comprehensive understanding of system performance, scalability, and security best practices.

Join our dynamic team as a Senior DevOps Engineer at Mirantis, where you will spearhead the design, implementation, and enhancement of customer infrastructure and CI/CD pipelines. Your expertise will be pivotal in collaborating with cross-functional teams to ensure optimal system performance, scalability, and security. In this influential role, you will also provide mentorship to junior engineers, champion automation initiatives, and play a key part in strategic decisions concerning infrastructure and deployment practices. This position is perfect for a seasoned professional with a strong foundation in cloud technologies, containerization, scripting, and DevOps best practices.Main Responsibilities:Architect and implement customer infrastructure across various cloud providers and bare metal environmentsDevelop and oversee Kubernetes clusters for microservices-based applicationsEnhance and streamline CI/CD pipelines for efficient software deliveryDesign, monitor, and manage development, staging, and production environmentsFacilitate knowledge sharing with customers during deployment projectsCollaborate with internationally distributed teams to tackle technical challenges and drive process improvementsMentor and cultivate the growth of fellow DevOps EngineersContribute to the Mirantis deployment knowledge baseContinuously enhance tools and technologies used in our processes

Join the Global Bank tribe at SumUp, where we are developing the essential infrastructure and core services that empower our merchants with digital bank accounts. Our vision is to be the foremost banking partner for small merchants worldwide, delivering a seamless, straightforward, and affordable banking experience tailored to their unique needs.As a member of the Global Bank tribe, you will play a pivotal role in building SumUp's digital banking ecosystem. Collaborate within a diverse, autonomous, and cross-functional team that brings product ideas from concept to reality. Embrace the opportunity to work with talented colleagues from 32 different nationalities spread across cities like Cologne, Berlin, São Paulo, Sofia, London, and Vilnius, all driven by a shared commitment to ownership, purpose, and supporting small businesses in thriving.As a Senior Backend Engineer, you will take charge of enhancing and maintaining a high-throughput banking ecosystem for our merchants within the Global Bank Tribe. Your contributions will be instrumental in architecting and evolving our global banking platform, ensuring high availability, scalability, and observability across various regions. If you're eager to gain hands-on experience in building products for business accounts, card payments, and transfers across Europe and Latin America for SumUp's Global Bank, we invite you to embark on this exciting journey with us!

Join Our Mission to Empower Wealth Building!At Trading 212, we are transforming the landscape of trading and investing through innovative products that resonate with our users.Our culture thrives on excellence and swift execution, which has been instrumental in our remarkable growth — serving over 5 million clients and managing more than €30 billion in assets.As we expand into Germany, we are looking to enhance our Compliance Team to ensure our unwavering commitment to integrity and adherence to regulations.

Join Our Mission to Empower Wealth BuildingAt Trading 212, we are revolutionizing the landscape of trading and investing. Our innovative products are designed to inspire and engage users, allowing them to build wealth effectively.We believe that a culture of excellence and rapid progress is crucial to our achievements.Currently, we cater to over 5 million clients, managing assets exceeding €30 billion, which reflects the trust and scale we've cultivated in a short span of time.Role OverviewWe are seeking a talented Recruitment Operations Manager to architect and oversee the foundational operations of our recruitment function. This is a unique opportunity to shape the future of our hiring processes from the ground up, including ownership of the technology stack, data management, procedural frameworks, and strategic planning. This role is perfect for a systems thinker who thrives on making impactful architectural choices as we scale our operations.Your ResponsibilitiesWorkflow Analysis & Optimization:Analyze current workflows and create new processes based on foundational principles; implement data-driven enhancements and track KPIs to ensure sustained improvements.Technology Stack Development:Assess, implement, and refine the tools and integrations that power our recruitment function—ATS, CRM, scheduling, sourcing—and manage the data model and integration framework.Performance Reporting & Analytics:Develop key metrics and dashboards that provide recruiters, hiring managers, and leadership with real-time performance insights.Program Management:Lead the operational design and execution of structured programs, establishing scalable processes rather than ad-hoc solutions.AI & Automation Integration:Integrate AI-driven tools across the recruitment workflow; prioritize tools based on measurable outcomes rather than features.QualificationsYou should possess proven experience in managing recruitment operations or a closely related function, demonstrating a strong understanding of operational excellence and innovation.

Join Our Mission to Empower Wealth BuildingAt Trading 212, we are revolutionizing the trading and investing landscape by crafting outstanding products that our users adore.We thrive on a culture of excellence and rapid innovation, which is central to our achievements.Currently, we proudly serve over 4.5 million clients, managing assets exceeding €30 billion, showcasing the scale and trust we have established in a short period.Your ResponsibilitiesOversee quality assurance tasks across various projects, guaranteeing that our software aligns with the highest standards of quality and reliability.Engage actively in design and requirements reviews to assure that features and products are testable and user-friendly.Lead testing initiatives, including the development and maintenance of automation frameworks and scripts.Plan, implement, and execute testing activities across different product domains - Database, integration, functional, UI/UX.Analyze testing results to pinpoint areas for enhancement and suggest necessary process modifications.Provide technical guidance and process mentorship to junior team members.Collaborate within compact, autonomous teams with quick release cycles - we leverage agile, independent teams of talented individuals with just the right processes to maintain velocity without chaos.Essential QualificationsA minimum of 5 years of experience in software quality assurance, emphasizing automation testing.A solid grasp of software testing concepts, methodologies, and tools.Proficient programming skills in at least one language (e.g., Python, TypeScript, Java).Familiarity with test automation frameworks and tools (e.g., Playwright, Selenium, Appium, Pytest, TestNG).Experience with API testing tools such as Postman, SoapUI, or similar.Strong knowledge of relational database management systems (RDBMS).Familiarity with agile methodologies like Scrum or Kanban.Exceptional analytical and problem-solving abilities.Excellent command of the English language and outstanding communication skills.A deep-seated passion for quality assurance. Preferred QualificationsRelevant experience or certifications in quality assurance or software testing are a plus.

Join our dynamic team at Devexperts as a Site Reliability Engineer (SRE). In this pivotal role, you will contribute to the development and support of advanced trading platforms that serve users across various countries. Your expertise will ensure optimal access to multiple markets, and you will focus on maintaining system availability, automating deployment processes, and implementing effective monitoring and alerting solutions.Key Responsibilities:Collaborate with developers to prototype and design innovative features for infrastructure improvements.Deploy, install, configure, and maintain complex Trading/Finance software solutions.Utilize Infrastructure as Code to configure bare metal instances.Build and maintain robust CI/CD pipelines.Make strategic decisions regarding system scalability, reliability, and accessibility.Install and manage both in-house developed and well-known external monitoring systems.Design, deploy, and configure cloud-based servers, including server and storage provisioning, firewall setup, VPN, and monitoring tools.Administer UNIX infrastructure through installation, configuration, and maintenance tasks.Manage Nexus and GIT repositories effectively.