• Design and maintain our core compute platform • Design and maintain orchestrators and distributed agents • Ensure scalability, reliability, and performance • Collaborate with cross-functional teams to identify and address technical issues • Monitor system performance and troubleshoot issues • Participate in code & changes reviews • Take part in the on-call roll after a training period

Role Description Roles at Hugging Face are very fluid and dynamic -- we're looking for someone who is comfortable taking on different challenges that evolve over time. This role sits on the Xet Storage team, the group responsible for the storage system behind all of Hugging Face. Today we store over 200PB (and growing rapidly!) of the world's most important ML & AI assets. Xet is the underlying storage architecture for the entire Hugging Face platform and community -- from the largest model repositories to the datasets and Spaces that millions of people build on every day. In this role, you'll work across two closely connected surfaces: - Contribute to xet-core, our open-source project written in Rust that powers hf-xet -- the Python library underpinning the Hugging Face Hub client and the wider ecosystem of open-source tools the community relies on. - Design, build, and operate meaningful and challenging features in the Xet Storage backend, contributing to the broader Infrastructure organization at Hugging Face. We're a small team building and operating incredible things at enormous scale, in a high-trust, low-process, async, and remote environment -- and we lean heavily on the latest AI tools to move fast. If you love writing low-level, high-performance code and are energized by the challenge of large-scale, scalable services, this is the team for you. This usually means proven experience building and operating production systems software, but we consider every applicant on an individual basis. Qualifications - 8+ years building and scaling distributed systems, storage, or networking infrastructure. - Proficiency in a low-level systems language, with Rust strongly preferred (we also work in Python, Typescript, Go, and C++ across the stack). - A track record of working independently in a high-trust, low-process environment -- you're comfortable with ambiguity and take ownership end to end. - Comfort operating in a fast-moving, async, and fully remote environment. - A passion for building simple, robust, and scalable systems relied on by engineering and science teams around the world. Requirements - Experience designing efficient, high-performance, fault-tolerant data storage and retrieval systems. - Experience operating production systems -- monitoring, alerting, and distributed debugging and recovery. - Familiarity with git internals, cloud infrastructure (AWS, Azure, GCP, Kubernetes), databases (relational and non-relational), or networking. Benefits - Flexible working hours and remote options. - Health, dental, and vision benefits for employees and their dependents. - Parental leave and flexible paid time off. - Reimbursement for relevant conferences, training, and education. - Company equity as part of the compensation package.

Role Description “Data is king, but you have to know how to use it” That is the motto we apply when working on Rich Filters for Jira Dashboards app. We enable teams to get maximum of their Jira data with advanced filters, charts, gadgets, real-time reports that come with our interactive dashboards. Thousands of companies around the world benefit from the power of data, directly in Jira. Do you want to help them be “kings”? We’d like to see you joining! - Be a part of a self-organizing, cross-functional product team and cooperate closely with other Software Engineers, Product Manager, Team Leader, UX Designers, and with other specialists like Product Marketeers or Support Engineers. - Design, build, and maintain efficient and scalable TypeScript, React, Java & SpringBoot based applications. - Follow and establish the best engineering practices: automated testing, code reviews, YBIYRI (you built it you run it). - Share your thoughts openly and honestly on what would be the best for the customers and the business: you will be part of discussions about the future of our products and Appfire. - Decide freely about your day and assignments - we do not micromanage people and we do care about work & life balance. Your mental and physical health is important to us. - Be the change you seek - if you see that something can be improved, suggest how and make it happen (alone or by engaging your colleagues)! Qualifications - Proven record (3+ years) of delivery of multiple complex software development projects or products. - Hands-on experience with JavaScript or TypeScript, ideally using React. - Willingness to learn and use multiple technologies (frontend and backend). - True engineering approach to solving problems. Good theoretical foundations of computer science (e.g. algorithms and computational complexity, OOP) are super practical in the ever-changing landscape of technologies. - Strong architectural understanding of web applications, including performance, quality and security aspects. - Good understanding of modern Cloud architectures, and practical experience implementing them in AWS or GCP. - Experience with Java and its frameworks (particularly Spring MVC/Boot/Data) is highly desirable. - Experience defining test cases and writing automation would be an advantage. - Prior experience with Jira and its ecosystem will set you apart. - Ability to decompose complex problems into well described, realistic to estimate tasks. - Command of English at level B2 or higher is required. Benefits - Equity - Every Appfire team member is eligible for company equity, fostering a true sense of ownership and connection to our growth. - Paid time off - 25 paid days off regardless of your years of tenure. Increases to 30 days of annual leave per year after 5 years of employment. - 24 hours of paid volunteer time to engage in meaningful activities outside of work. - Training and personal development - Grow with Appfire University — our custom, on-demand learning platform designed to support your continuous development. - Health insurance - Private health insurance through UNIQA, fully paid by the company. - Multisport Card - The card is fully covered by Appfire. - Transport Card - Sofia City Transport Card, fully paid by Appfire, providing access to all modes of public transportation within the city. - Food vouchers - Pre-paid Pluxee lunch card with a monthly budget of 102,26 EURO. - Baby Bonus - To celebrate new additions to the family, employees receive a one-time net bonus of 511 EURO upon the birth of a child. - Volunteering - 3 fully paid days each year to participate in Appfire Town, our Corporate Social Responsibility (CSR) program supporting local communities. - Flexibility - The role is fully remote within Bulgaria, with the option to work from our Sofia office.

• Code, Build, and Ship (70-80% of your time) Develop and refine core backend (Django) and frontend (React + TypeScript) • Create and improve APIs for users, orders, shipping, and partner tools • Build smart integrations with tools like Shopify and Mendrix • Scale and optimize cloud hosting on GCP (and AWS in the future) • Ensure the stack is clean, scalable, and future-proof • Product Engineering (20-30% of your time) Architect and scale multi-tenant SaaS solutions for the next growth phase • Collaborate with product, design, and operations teams to align technical plans with business goals • Set the bar for code quality, testing (TDD/BDD), and CI/CD workflows • Mentor developers and create a culture of engineering excellence • Identify opportunities to innovate and improve