Overview

We are looking for a Senior Fullstack Engineer with strong backend expertise in Java and solid frontend experience with React and TypeScript. In this role, you will work within an agile engineering team to design, build, and improve scalable products and features, while contributing to technical decisions, mentoring peers, and promoting engineering best practices.

Key Responsibilities

• Work as part of an Agile engineering team, following best practices to deliver maintainable, scalable, and high-quality software.
• Design, develop, and enhance product features across both backend and frontend systems.
• Collaborate closely with stakeholders to understand business needs, define technical requirements, and validate new product functionalities.
• Independently clarify technical requirements, assess development effort, and propose effective design approaches.
• Write clean, efficient, and well-tested code with a strong focus on code quality, maintainability, and customer experience.
• Conduct code reviews, provide constructive feedback, and support continuous improvement across the team.
• Contribute to architectural discussions, especially around microservices and serverless solutions.
• Promote a culture of collaboration, mentoring, and knowledge sharing within the team.
• Support and improve CI/CD practices to streamline development and deployment processes.
• Ensure backend applications follow security best practices, including familiarity with OWASP principles.
• Maintain strong testing standards, including unit tests, integration tests, and end-to-end testing.

Qualifications

• 7+ years of professional software engineering experience.
• Strong experience in Java backend development, ideally with Play Framework 3 and/or Spring Boot.
• Strong frontend experience with React, Redux, Material UI (MUI) and TypeScript.
• Experience with Angular 13 + TypeScript is highly desirable.
• Experience working with build and dependency management tools such as: SBT, Maven, Gradle.
• Solid experience with relational databases; MongoDB is a plus.
• Experience with messaging systems, such as AWS SQS, RabbitMQ or Kafka.
• Strong knowledge of JUnit.
• Hands-on experience with microservice and serverless architectures.
• Experience implementing and maintaining CI/CD pipelines.
• Strong understanding of testing practices, including Unit testing, Integration testing, End-to-end testing.
• Familiarity with backend security best practices and OWASP.
• Experience with AWS technologies, Docker, SonarQube.
• Experience with frontend testing tools such as Jest, Vitest, Karma, Jasmine.
• Strong understanding in cross-platform development.
• Experience with Electron is a plus.
• English level: B2 or higher.

Benefits

• You will work with amazing teammates from across Europe.
• Take a leading role in our newly-established Bulgarian center, contributing to the foundation of our future.
• Our Sofia office is right in the center, ensuring that everything you need is close by.
• Monthly transport allowance and enjoy the convenience of a dedicated parking area at the office.
• Enjoy 25 days of paid leave, we make sure you have plenty of time to relax and recharge.
• We’ve got you covered with additional premium health insurance and dental care, to keep you and your family protected.
• We offer food vouchers and to add a little extra you can enjoy complimentary meals in the office.
• Fully covered Multisport card that gives you access to a variety of fitness options to keep you active and feeling great.
• We support your growth with certifications and courses that help you advance your career.
• Join us for Social Events, Informal Office Gatherings and Team-building activities with your colleagues, where we celebrate our achievements together.
• We’ll work with you on an individual plan to help you reach your career goals.
• Benefit from our coaching and mentorship programs, technological and professional guilds that offer guidance and support for your career journey.
• Participate in various social initiatives, contributing to causes that matter to you.
• Use our online platform, dedicated to your well-being and mental health.
• Enjoy the flexibility of our Work Abroad Policy, letting you work from another European country for a period of time.
• Refer a Friend, Get Rewarded.

Let's start with the role

Principals hold a central role in the Technology department. They are expected to help teams devise elegant and performant solutions in response to real business problems, guide them in designing and implementing these solutions in code, as well as teach coding, testing, debugging, and performance analysis techniques, while also carrying out code reviews.

As a Frontend Principal Software Engineer you will develop modern applications for our product by using state-of-the-art technologies. Your focus will be the execution of the technical roadmap, so code modularity, reusability & testability as well as performance tuning and monitoring will be a part of your day-to-day. Equally important, you will also provide technical guidance to the development teams, enforcing best practices and patterns for our features. More specifically, you will participate in technical analysis, and in collaboration with UI/UX designers, you will have the opportunity to offer the best experience to our customers.

Tech Stack

On our frontends, use Vue.js 3,Typescript, VueX, Pinia, Tailwind,Webpack, Vite, Storybook, Jest, Vitest, Openshift, Private npm packages for building our internal shared libraries, Micro frontends architecture

• Write code as we expect our technical leadership to be in the trenches alongside engineers, understand root causes, and lead by example.
• You understand key frontend performance metrics and have some experience in debugging frameworks such as Lighthouse and ChromeUX.
• Exert technical influence over multiple teams, actively mentor individuals on advanced technical issues, and help technology managers guide the technical growth of their team members.
• Support Product and Delivery in building highly scalable solutions aligned with non-functional requirements in terms of performance, security & regulatory.
• Provide clear hands-on solutions with POCs or actual implementations depending on the particular case and scenario.
• Participate in technical discussions as part of the team. You should be ready to challenge our architecture, propose changes, and ultimately implement them.
• Become the first point of contact between the Architecture Engineering Team and Development Teams. Safeguard our engineering processes and the way we deliver software to browsers and mobile devices.

What you will bring

• Knowledge of how modern frontend libraries connect data and state to the underlying rendering engine be it a browser DOM or a native mobile API.
• Good knowledge of frontend integration schemes either on the client side or server side (iframes, micro-frontends, edge includes)
• Experience with server-side rendering in any of the major front-end frameworks is nice to have.
• Solid experience with bundling tools such as Webpack and Vite.
• Solid experience with a global store / action-based state management pattern (Redux, VueX, Pinia)
• Excellent understanding of how SPA frontends can communicate with a BFF and best practices in terms of API design.
• Excellent knowledge of all newest browser APIs such as service-workers, MutationObserver, ResizeObserver
• Experience with mobile development either native or through a hybrid model (react-native, ionic, etc) will be considered a plus.

About us:

Betty is an innovative entertainment company pioneering at the intersection of real money online casino and casual mobile gaming. Accredited by the Alcohol and Gaming Commission of Ontario (AGCO) as a B2C operator in February 2023, we've set a new standard in the industry. Our mission is to redefine the online casino experience by offering a uniquely transparent environment where players can relax, unwind, and enjoy themselves safely. We are committed to accessibility, fairness, and inclusivity, fostering a community of like-minded individuals who value ethical gaming practices and prioritize our players' safety and enjoyment above everything else.

Our Values:

• We are honest - we value honesty in all aspects.
• Bring the Olives - we offer premium customer experience.
• Think Big - we believe in always striving for more.

Key Responsibilities:

• Build and maintain web applications using React
• Implement server-side rendering using NextJS
• Develop progressive web apps
• Utilize state management libraries such as Redux or Redux Toolkit
• Optimize web application performance for speed and efficiency
• Conduct automated UI testing to ensure high quality and reliability
• Integrate best practices in DevOps and security into the development process
• Apply experience in mobile application development with React Native when needed
• Maintain a strong focus on building a top-quality product
• Adapt to a fast-paced work environment where results are prioritized
• Take full ownership of tasks and responsibilities

Requirements: 

• 5+ years of professional experience building web applications
• Solid experience with React
• Experience implementing server-side rendering (NextJS) and progressive web apps
• Experience with state management libraries such as Redux / Redux Toolkit / etc.
• Experience with web performance optimization
• Excellent understanding of automated UI testing
• Good understanding of DevOps and Security
• Previous experience in mobile application development with React Native is a plus
• Fluency in English

What we offer:

• Competitive salary
• Premium Health insurance
• Career and skills development opportunities
• Fun and collaborative team environment
• New modern office space