Principal Backend Engineer at Trading 212 | Sofia

Our mission is to empower individuals to create wealth.At Trading 212, we are transforming the landscape of trading and investing by developing outstanding products that our users adore.Our dynamic team is composed of highly motivated individuals who pursue excellence and cherish autonomy.With over 4.5 million clients and more than €30 billion in assets under management, our growth and trust in the market speak volumes about our success.We are in search of passionate and experienced Principal Software Engineers to drive innovation and scalability in our systems.

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.

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.

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.

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.

At Trading 212, our commitment is to democratize investing, making it accessible for everyone. We have grown from a visionary idea into a trusted platform, serving over 4.5 million clients and managing more than €30 billion in assets.Our culture of excellence and rapid pace propels us to create intuitive, impactful products that empower individuals to enhance their financial well-being. We believe investing should be straightforward, meaningful, and inclusive.Role OverviewAs a Lead Principal Product Designer, you will spearhead design initiatives within a pivotal product area, articulate a visionary user experience, and craft user-centric, elegant solutions that resonate with millions.Collaboration with product managers, engineers, and fellow designers will be key as you tackle intricate challenges, drive strategic projects, and elevate design standards and quality.Your ResponsibilitiesLead the design strategy and implementation for a significant product domain.Create seamless end-to-end customer journeys that simplify complex financial tools, making them enjoyable and accessible.Produce high-quality design deliverables including concepts, wireframes, high-fidelity UIs, and prototypes.Facilitate cross-functional collaboration to gather insights, ensure alignment, and enhance decision-making.Advocate for data-informed design choices that significantly enhance customer satisfaction and engagement.Establish and uphold exceptionally high design standards.Mentor and nurture fellow designers, sharing your expertise to foster team growth.Your QualificationsOver 8 years of experience in developing impactful digital products.An impressive portfolio demonstrating advanced product thinking and the ability to simplify complex systems.Robust interaction and visual design skills, with a keen eye for detail.Exceptional communication and storytelling abilities to engage stakeholders effectively.Proven track record in using both quantitative and qualitative insights to drive product performance.Experience in developing and enhancing design systems.Background in leading projects from conception to completion or executing major redesigns.

Join Us in Empowering Wealth CreationAt trading212, we are redefining the landscape of trading and investing by crafting innovative products that resonate with users. Our commitment to excellence and rapid execution has been pivotal to our growth.Currently, we proudly support over 4.5 million clients, managing more than €30 billion in assets—an impressive reflection of the trust and scale we’ve achieved in just a few years.Your Role and ResponsibilitiesTake a comprehensive approach to problem-solving, integrating business challenges, service architecture, and the technological landscape into your solutions.Lead the full software development lifecycle (SDLC), from requirements gathering and design through coding, testing, deployment, and monitoring. You will own your code, ensuring it remains robust and optimized for enhancements when opportunities arise.Design for performance, scalability, and resilience, ensuring your code operates flawlessly in a demanding environment where downtime, latency, and data loss are unacceptable.Collaborate within small, autonomous teams with rapid release cycles, leveraging agile methodologies to maintain high velocity while preserving necessary processes.Engage in continuous learning and knowledge sharing within the team, as our growth is contingent on the company’s collective evolution and constructive feedback. What We Expect from YouA solid understanding of common communication protocols, with comfort in using HTTP, WebSockets, and AMQP, alongside the ability to discern appropriate application contexts.Experience with at least one widely-used web framework, regardless of programming language. Our technology-agnostic platform allows engineers to choose the most suitable language for specific tasks, balancing cutting-edge solutions with proven technologies.A strong grasp of RDBMS concepts, including indexing, transactions, isolation levels, and locking mechanisms, with the skills necessary to design high-performance databases.

Join our talented team at devexperts as a Backend Engineer, where you'll play a pivotal role in developing cutting-edge software solutions. Your expertise in backend technologies will help us enhance our products and provide exceptional service to our clients.

Welcome to Kaizen Gaming!At Kaizen Gaming, the driving force behind Betano, we stand as one of the leading GameTech companies globally, operating across 19 dynamic markets. Our commitment is to harness the latest technological advancements, delivering unparalleled experiences to millions of customers who rely on us for their entertainment.With a vibrant team of over 2,700 Kaizeners from more than 40 nationalities across three continents, we embrace diversity and innovation.Proudly recognized among the Best Workplaces in Europe and certified as a Great Place to Work, we promise that every day here is unique and filled with potential. Are you ready to Press Play on your career?About the Role:As a Lead Principal Backend Engineer, you will be pivotal in designing and evolving high-performance, scalable backend systems. We seek a technical expert who excels in leadership and mentorship, guiding engineers at all levels. Your expertise will drive the development of our robust software solutions while collaborating with cross-functional teams to achieve excellence.Your Responsibilities Include:Architecting & Innovating: Partner with our agile team to create scalable, secure, and high-performing backend systems that power our innovative solutions.Code Craftsmanship: Write clean and efficient code that serves as the backbone of our technology stack.Mentorship: Inspire and mentor fellow tech leaders, fostering skill development and the adoption of best practices.Performance Optimization: Spearhead initiatives to identify and enhance system performance, ensuring seamless user experiences.Integration Collaboration: Work closely with cross-functional teams to guarantee smooth system integration.Tech Trendsetter: Stay ahead of technological trends, applying emerging technologies to augment our capabilities and disrupt the industry.Best Practices Advocate: Collaborate with Principal Engineers to establish company-wide best practices and foundational software development processes.Strategic Vision: Define and concentrate on the technical roadmap, aligning it with the company's long-term goals beyond immediate business needs.

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 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 Team at Kaizen Gaming!At Kaizen Gaming, the driving force behind Betano, we proudly stand as one of the largest GameTech companies globally, with operations in over 20 markets. Our mission is to harness cutting-edge technology to deliver exceptional entertainment experiences to our millions of satisfied customers.Our diverse workforce boasts more than 2,700 talented individuals from over 40 nationalities, spanning three continents. We are thrilled to be recognized among the Best Workplaces in Europe and certified as a Great Place to Work across all our offices. Here, every day is an opportunity for growth and innovation. Are you ready to Press Play on Your Potential?The RoleDesign, build, and maintain efficient, reusable, and reliable code.Develop interfaces between components of heterogeneous subsystems in a high-volume, transaction-oriented production environment.Ensure optimal performance, quality, and responsiveness of applications.Identify bottlenecks and bugs, devising effective solutions to complex challenges.Technology StackOur services primarily utilize C# / ASP.NET, with newer applications developed in .NET Core. The front-end employs Vue.js for new projects, while legacy systems use server-rendered (Razor) views alongside jQuery and Knockout.js. For data storage, we predominantly use MS SQL Server, supplemented by Redis and ElasticSearch when appropriate. RabbitMQ serves as our preferred message broker, and we rely on Gitlab for version control and CI, complemented by the Atlassian suite for ticketing and documentation.What You’ll BringA minimum of 1 year of development experience with C# / ASP.NET / MVC (full framework or .NET Core).A foundational understanding of web technologies, including HTTP.Experience with data access through databases and APIs.Familiarity with unit testing is an advantage.Perks of Working with Us Hybrid working model. Onboarding support from a dedicated buddy. Competitive salary and bonus structure.‍ Comprehensive private health insurance for you and your family. Monthly meal allowance. Access to a multi-sport card. Additional vacation days.⭐ A developmental 360° feedback framework. Unlimited access to Udemy and ongoing training opportunities.

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.

TINQIN has been a pioneer in delivering cutting-edge software solutions for the insurance sector for over a decade, earning the trust of numerous long-term clients and partners.As a proud member of the Be Ys Group, TINQIN has broadened its expertise into the realm of digital trust and identity technologies. This rapidly expanding product line has now evolved into a dedicated entity known as KIPMI Software. We are actively seeking a Java Principal Engineer to join our innovative team dedicated to developing next-generation digital trust products.Be part of our mission to shape the future of technology!

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.

At Brandwatch, we are committed to empowering every individual to make a significant impact. Your voice is valued here, and your unique insights contribute to our collective success. As part of our global team, you'll flourish in an environment that fosters curiosity, collaboration, and innovation, while making meaningful contributions to the brands we support.Join us in redefining the future of communication and building authentic connections that matter. Whether you are tackling complex challenges or spearheading bold innovations, your growth is synonymous with our success. Together, we will create the conversations of tomorrow.Empower your impact at Brandwatch. Be seen, be understood, be you.Brandwatch is actively seeking a dedicated member for the Measure team. You will join a cross-functional and autonomous product team responsible for delivering solutions for performance monitoring and analytics across major social media platforms including Facebook, Instagram, Twitter, LinkedIn, TikTok, and YouTube.As a Backend Engineer at Brandwatch, you will work with the latest Long-Term Support (LTS) versions of Java and Spring, interfacing with some of the most influential social networks globally. You will consume and store data from their APIs at scale, creating REST APIs that expose vital social media KPIs to our clients. Additionally, you will design and implement a scalable microservice architecture.

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.

Join us on our mission to empower individuals to build wealth.At Trading 212, we are transforming the landscape of trading and investing by developing standout products that resonate with users. Our commitment to fostering a culture of excellence and rapid execution is fundamental to our growth and success.Currently, we are proud to serve over 4.5 million clients, managing assets exceeding €30 billion—a reflection of the trust and scale we have achieved in a short span.Your Responsibilities:Design and produce high-quality visual assets for our product and marketing initiatives, including app store visuals, banner advertisements, social media content, and product illustrations.Collaborate with senior designers across various teams (Growth, Product, Partnership) to support projects from initial concept through to final execution.Develop visuals based on established concepts, enhancing layout, typography, and overall visual coherence.Gain insight into brand strategy across multiple platforms, gradually taking charge of specific areas.Engage in peer reviews, design critiques, and collaborative feedback sessions with cross-functional teams.Thrive in a dynamic, high-trust environment where direct feedback and craftsmanship are valued.Your Qualifications:Solid foundation in visual design principles, with an eye for composition, typography, spacing, color, and layout.Proficient in Figma and experienced with existing design systems.Strong understanding of visual hierarchy and consistency across design assets.Curiosity to explore new formats and tools, including mobile layouts, animations, and campaign visuals.Receptive to feedback and eager to develop expertise in specific design domains (e.g., app visuals, advertisements, motion graphics, social media).2–4 years of relevant experience in design (agency, in-house, or freelance), preferably within tech, fintech, or results-oriented teams.What We Offer:A hands-on design role where your contributions directly impact users.Exposure to various visual domains and the opportunity to evolve into strategic ownership roles.A supportive senior team that encourages growth and innovation.

Join SumUp as a Backend Engineer specializing in Go within our Payments Experience team. In this role, you will be instrumental in building and optimizing backend services that power our payment solutions. You will collaborate with cross-functional teams to enhance user experience and ensure seamless transactions.