Senior Backend Java Developer

• Designing and implementing new functionalities while maintaining and optimizing existing ones.
• Ensuring high code quality through rigorous testing (unit, integration) and peer code reviews.
• Collaborating with Product Owners, UX/UI designers, and frontend teams.
• Solving performance-related challenges to ensure system stability and speed.
• Contributing to technical discussions and helping the team solve production issues.

Technical Highlights:

• Add your value to complex yet well-designed application, having over 100 modules and fully-fledged Domain-Driven Design (ubiquitous language, aggregates, domain events etc.)
• Practice your craftsmanship in good design (clean code, SOLID, Inversion of Control) and in various architectures (hexagonal, event-driven, pipes&filters, modular monoliths, microservices and more)
• Thoroughly test what you build: with unit, integration and e2e tests (Spock, JUnit, Mockito, AssertJ, REST Assured, WireMock, Testcontainers, Cypress)
• Learn our advanced cloud (SaaS) architecture: serving thousands of tenants (multitenant architecture), continuously monitored and profiled (ELK, async-profiler), and with state of the art release process (feature flags, canary releases). We use AWS and GCP. Help us advance our cloud architecture further 
• Practice other cool approaches and tools like reactive programming, Event Sourcing, Apache Kafka or Redis
• Feel safe with our extensive CI process that automatically runs unit, integration, e2e, architecture, migration and performance tests on your commit

Skills and experience you'll need to succeed:

• Solid Java Foundation: Strong practical knowledge of Java, Spring, Hibernate, and SQL.
• Clean Code & Patterns: A good understanding of SOLID principles and common design patterns to keep the codebase maintainable.
• Testing & Tools: Proficiency in JUnit/Spock, Git, Maven, and Docker.
• Production-Ready Mindset: Experience in evolving and scaling established systems (beyond just greenfield projects) and a focus on long-term code maintainability.
• Performance Awareness: Ability to use profiling tools and a focus on writing efficient code that performs well under load.
• Cloud Basics: Understanding of SaaS architecture and cloud environments (AWS or GCP).

Beyond the resume skills that match our culture and this role:

• You are dedicated to elevating client and co-worker experiences, knowing that exceptional work centers on serving others.
• You adapt swiftly to new business demands, understanding that change fuels collective and individual growth.
• You excel in communication, effectively connecting in remote/hybrid environments using tools like Slack, Zoom, and G Suite and through occasional in-person events.
• You have exceptional coaching, mentoring, and people development skills.

We offer:

• 25 paid days off, regardless of years of experience
• Private healthcare
• Sofia public transport card
• Multisport card
• Development opportunities via our Appfire University

Disclaimer: The responsibilities outlined in this job posting are intended to provide a general overview of the role. Additional duties may be assigned as needed to meet the needs of the business.

#LI-Remote

Since its inception, Appfire has been a remote-first company. With 850+ employees (who we call fireflies) across 28 countries, we foster an environment where everyone is respected. We invest in team members by ensuring they grow professionally and personally.

At Appfire, CSR means embedding purpose, responsibility, and impact into everything we do. We use our people, products, and partnerships to make a meaningful difference in the world, we act responsibly as a business, and we empower communities while strengthening our skills and culture and fostering belonging across Appfire.

In 2015, Appfire joined the Pledge 1% network of organizations committed to philanthropy. Appfire has since grown our Pledge 1% program to include all four pledge types — product, profit, equity, and employee time. We were among the first to do this, and we’re proud that Pledge 1% is part of our evolution.

Appfire mission to equip and connect every team so they can plan and deliver their best work. We are committed to building a durable, multi-generational business, and to evolving, innovating, and scaling in a way that ensures stability and opportunity for years to come

What’s our secret sauce?

1. We follow teams. We do our research and build software that solves real-life collaboration challenges while being easy to implement and a joy to use. We’re proud to support over 20,000 customers and growing, including 55% of the Fortune 500. From the entertainment delivered by Netflix to the devices crafted by Samsung, and Dell Technologies and the financial transactions handled by Visa, Edward Jones, and US Bank, Appfire’s technology is indispensable. Our products also play a pivotal role in streamlining operations and fostering innovation at companies like Tesla and significant institutions such as NASA, Boeing, and many more. 
2. We enhance. Our software is designed to give developers, knowledge workers, and teams the ability to extend and get greater value from the platforms they’ve invested in and enjoy. So far, our solutions extend and enhance the capabilities offered by Atlassian, Microsoft, monday.com, and Salesforce. 
3. We build bridges and invest in our partners. Appfire's success is underscored by its channel program as its primary path to market. Today, Appfire has a dedicated Channel team supporting 800+ channel partners.
4. We make security and privacy a priority, but we also keep it simple for our customers. We’ve achieved International Organization for Standardization (ISO) 27001 and ISO 27017 and System and Organization Controls (SOC) SOC 2, Type I and SOC 2, Type II certifications. Our award-winning Appfire Trust Center, offers our customers, partners, and prospects the latest security, privacy, and compliance information, including pre-completed questionnaires (CAIQ, SIG, and VSA) with an accelerated NDA process and just one EULA to cover it all.

Appfire has been consistently recognized for company growth, culture, corporate social responsibility, and product excellence and has been included among the Deloitte Technology Fast 500, Inc. Best Workplaces, BuiltIn Best Places to Work, and Inc. 5000. Learn more about our accomplishments, which would not be possible without our team members, partners, and customers: https://appfire.com/awards.

Appfire is an equal opportunity employer and does not discriminate based on race, color, religion, sex (including pregnancy), sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, veteran status, or any other protected characteristic as defined by applicable law. Our commitment extends to all employment practices, including recruitment, hiring, training, promotion, compensation, benefits, and termination.