Senior Engineer, Kernel Development & Optimization

At Tenstorrent, we are at the forefront of pioneering AI technologies that are reshaping performance benchmarks, user experience, and cost-effectiveness. In this new era of AI-driven computing, our solutions must adapt to integrate advancements in software models, compilers, platforms, networking, and semiconductors. Our innovative team has successfully developed a high-performance RISC-V CPU from the ground up, fueled by our enthusiasm for AI and a strong commitment to crafting the premier AI platform. We appreciate collaboration, curiosity, and the desire to tackle complex challenges. As we expand our team, we invite contributors of all experience levels to join us.In the realm of next-generation AI computation, our Kernel Development and Optimization team focuses on creating the essential performance-critical kernels that fully utilize our hardware capabilities for ML and HPC tasks.This position is hybrid, based in Belgrade, Serbia.We encourage applicants with a range of experience levels. During the interview process, we will evaluate candidates to match them with the appropriate level, which may vary from this posting.

At d-Matrix, we are dedicated to unlocking the transformative power of generative AI. Positioned at the forefront of software and hardware innovation, we continuously challenge the limits of technological possibilities. Our workplace thrives on respect and collaboration.We embrace humility and prioritize open communication. Our inclusive team values diverse perspectives, leading to innovative solutions. We are on the lookout for passionate individuals eager to tackle challenges and driven by results. Ready to explore your potential? Together, we can shape the limitless future of AI.The Role: Senior Staff Software Engineer - AI KernelsLocation:Hybrid, working on-site at our Belgrade, Serbia office 3-5 days a week.What You Will Do:You will join a dynamic team responsible for productizing the software stack for our AI compute engine. Your role will involve the development, enhancement, and maintenance of software kernels tailored for next-generation AI hardware. With your extensive experience in building software kernels for hardware architectures, you will apply your deep understanding of various hardware systems and effectively map algorithms to these architectures. You will also be adept at translating computational graphs from AI frameworks into optimized implementations. Your comprehensive knowledge across the full-stack toolchain will enable you to navigate the complexities of hardware-software co-design, allowing you to deliver scalable software solutions within tight timelines. Collaborating closely with compiler experts, you will help develop robust compiler infrastructure while engaging with other software (ML and systems) and hardware (mixed signal, DSP, and CPU) specialists within the company.What You Will Bring:Minimum:An MS in computer engineering, mathematics, physics, or a related field coupled with 10+ years of industry experience, or a PhD in a pertinent area with at least 1 year of professional experience.A solid understanding of computer architecture, data structures, system software, and machine learning principles.Proficiency in C/C++ and Python development within Linux environments, with familiarity in using standard development tools.Experience in implementing algorithms using high-level programming languages such as C/C++ and Python.

Join Our Team at Ruby LabsAt Ruby Labs, we pride ourselves on being at the forefront of technology, developing and managing groundbreaking consumer products across health, education, and entertainment sectors. Our vibrant teams are dedicated to pioneering innovative solutions that shape the future of consumer experiences. We invite passionate and talented individuals to explore opportunities with us. Discover more about our journey at: https://rubylabs.com/about-us/Your Role as a Senior CRO SpecialistWe are seeking an experienced CRO Specialist who possesses an unwavering commitment to conversion optimization. Your goal will be to achieve a remarkable 15% growth in our conversion rates within a single quarter. Unlike roles in other companies where CRO specialists merely provide suggestions, you'll take the reins of the entire process. This includes data analysis, hypothesis formulation, designing high-fidelity mockups, collaborating with developers for implementation, and ultimately owning the performance metrics.At Ruby Labs, we recognize and reward excellence. Our compensation structure is designed to provide significant financial incentives for those who surpass expectations. If you’re eager to leverage your optimization expertise in an environment that celebrates achievement, we want to hear from you!Key ResponsibilitiesOversee the complete optimization cycle: from research and hypothesis creation to design, testing, and rollout.Conduct thorough funnel analyses and competitive benchmarking to uncover impactful opportunities.Create high-quality UI/UX mockups that effectively convey your vision while upholding brand standards.Collaborate with engineering teams to ensure seamless test implementation and deployment.Maintain rigorous attention to detail and quality throughout the optimization process.Analyze test results with statistical precision, making informed scaling decisions.Document insights and develop a systematic roadmap for ongoing conversion growth.Present findings and results effectively to stakeholders, fostering alignment and momentum.QualificationsDemonstrated success in CRO: 3+ years of practical experience, particularly with subscription models or SaaS funnels, showcasing documented performance improvements.Strong design sensibility and experience with UI/UX principles.Analytical mindset with expertise in statistical analysis and A/B testing methodologies.

At Perplexity, we are seeking a talented Senior or Expert C++ Developer to become an integral part of our dynamic Search Core team. This pivotal role involves shaping the future of our search technologies and products. You will influence major architectural, design, and implementation decisions that define our technical infrastructure.Key ResponsibilitiesDesign and develop innovative search index storage solutions that encompass both streaming and batch data processing systems, optimized for high-load environments with the capacity to manage billions of web pages.Create foundational core search components, including advanced algorithms for efficient data retrieval and ranking.Maximize hardware performance to ensure optimal system functionality.Address complex challenges related to multithreading, concurrency, and optimization at the system level.Enhance subsystems to ensure reliable and consistent data replication within the core search architecture.Required QualificationsA minimum of 5 years of hands-on experience in C++ programming.Familiarity with Python or other scripting languages.A strong commitment to writing clean, efficient, and scalable C++ code.In-depth knowledge of algorithms and data structures with practical application skills.Comprehensive understanding of multithreading, including various strategies, challenges, and trade-offs.Experience in developing high-load, distributed, and hardware-related services.Expertise in real-time systems development.Preferred QualificationsExperience in building core components for search engines, trading systems, or database management systems.Proficiency with cloud services, Kubernetes (k8s), and AWS infrastructure.

Role overview Tide is looking for a Senior Flutter Engineer based in Serbia to help create mobile applications that make financial management simpler for users. The position centers on designing, developing, and maintaining apps with Flutter, with an emphasis on usability and reliability. What you will do Collaborate with cross-functional teams during all stages of app development Design and implement new features using Flutter Maintain and enhance existing mobile applications Prioritize delivering effective user experiences Location This role is located in Serbia.

Join easygo, an innovative Australian technology powerhouse, as we continue to expand our engineering footprint in Belgrade. We are on the lookout for a Senior Backend Engineer to become a vital part of our Data and Integration Infrastructure team, responsible for architecting and enhancing the platforms that drive our global offerings.About the TeamYou will collaborate with a talented engineering group dedicated to empowering product and service teams, particularly on Kick. Our team is focused on developing and sustaining foundational platform capabilities that support the core systems of Kick, enhancing reliability, consistency, and the overall developer experience.Our responsibilities include ownership of essential components such as event pipelines, schema governance, service gateways, and notification delivery systems. These elements guarantee that Kick’s services communicate effectively and that data transactions across the platform are accurate, observable, and primed for analytics.By delivering robust, well-architected platform foundations and templates, our team significantly influences how Kick is constructed and scaled, streamlining workflows, minimizing redundancy across teams, and establishing a solid base for reliable integrations and data-informed decision-making.Who We’re Looking ForWe seek a Senior Backend Engineer proficient in Go, who is passionate about building platform-level capabilities that empower engineering teams to operate more efficiently and securely.The ideal candidate will take pride in designing and maintaining dependable, scalable systems, understanding the crucial impact that strong platform foundations have on the success of a large, evolving organization.You should feel at ease working on core infrastructure and shared services, and possess a strong commitment to engineering excellence. You’ll value clean interfaces, well-defined contracts, and highly observable systems, approaching complex challenges in a pragmatic and thoughtful manner.As a senior engineer, you will be expected to:Independently tackle complex, high-impact projectsEngage meaningfully in technical discussions and architectural decisionsMentor and uplift others through code reviews, knowledge sharing, and teamworkIf you are motivated by enabling others and making a lasting impact, and if you thrive in environments where enhancing reliability, data quality, and developer experience is just as crucial as delivering new features, we want to hear from you!

About UsAt Rho, we're redefining banking for startups. Our innovative platform allows businesses to open accounts in mere minutes, issue cards, manage expenses, pay bills, and maintain financial records—all in one seamless experience supported by dedicated human assistance.About the RoleWe are seeking a skilled Senior Software Engineer with a focus on backend development to join our talented core product team in Belgrade. You will play a pivotal role in enhancing and scaling Rho's comprehensive finance platform.If you are passionate about technology and eager to expand your knowledge, you'll be working with the following tech stack:Python and GoGraphQLPostgreSQLDockerKubernetesGoogle Cloud Platform (GCP)

Tenstorrent is seeking a Senior Staff Engineer focused on driver development in Belgrade, Serbia. This position centers on creating and improving driver solutions to boost system performance and functionality. Role overview Work closely with teams across hardware and software to design, implement, and refine driver architectures. The goal is to deliver reliable and efficient drivers that support advanced system requirements. Key responsibilities Design and implement driver solutions tailored to system needs Collaborate with cross-functional groups to innovate and optimize driver architectures Focus on reliability and efficiency throughout the development process Location This role is based in Belgrade, Serbia.

Become a vital part of our Automotive team and contribute to the evolution of a cutting-edge platform that drives next-generation digital mobility solutions. As a Senior Backend/Platform Engineer, you will be tasked with designing and developing scalable, high-performance backend systems that cater to millions of users and intricate automotive ecosystems. If you have a passion for clean architecture, platform innovation, and developing impactful systems, we would love to connect with you.Your ResponsibilitiesCollaborate with a dynamic cross-functional team to deliver meaningful product increments.Design and implement production-ready Java services adhering to established engineering standards and best practices.Engage in architectural decisions and technical dialogues, influencing the development of our backend and platform capabilities.Manage the production operation and monitoring of backend systems.Enhance and maintain systems in cloud-native environments, specifically AWS and Kubernetes.Focus on improving the reliability, scalability, and maintainability of our platform continuously.Contribute to CI/CD pipelines and infrastructure configuration relevant to backend services.Mentor team members and support their technical development proactively.

P-1415 At Databricks, our mission is to transform the data lifecycle by simplifying processes from data ingestion to ETL, BI, and extending to ML/AI through a unified platform. We envision a future where traditional data warehouse architectures are superseded by an innovative pattern known as the Lakehouse (CIDR 2021 paper), which merges data warehousing with advanced analytics. This paradigm shift addresses critical challenges like data staleness, reliability, total cost of ownership, data lock-in, and the limitation of use-case support. To realize this vision, we are developing a cutting-edge query engine and structured storage system designed to exceed the performance of specialized data warehouses in relational queries. We aim to preserve the expressiveness and robustness of general-purpose systems like Apache Spark™ to accommodate various workloads, including ETL and data science. Join us on this multi-year journey. As a member of our team, you will be involved in designing next-generation systems set to redefine industry standards in several key areas: Query compilation and optimization Distributed query execution and scheduling Vectorized execution engine Data security Resource management Transaction coordination Efficient storage structures (encodings, indexes) Automatic physical data optimization Your Responsibilities: Clarify requirements and drive design decisions for ambiguous problems Create technical design documents and project plans Develop new features Mentor junior engineers Test, deploy to production, and monitor outcomes.

Renesas Electronics Corporation seeks a Senior Backend Software Engineer based in Belgrade. The position centers on developing and maintaining backend systems that power advanced technology initiatives. Role overview This engineer will work on backend infrastructure, ensuring reliability and scalability for ongoing projects. The work involves supporting complex technology solutions that require careful planning and execution. Collaboration Regular interaction with colleagues from various disciplines is expected. Teamwork and clear communication are important, as projects often span multiple areas of expertise.

Join Acumatica as a Senior Software Developer - Localization and play a pivotal role in enhancing our software solutions for international markets. You will be responsible for designing, implementing, and maintaining localization features that enhance user experience across diverse languages and cultures. Collaborate with cross-functional teams to ensure seamless integration of localized content and functionalities.

Role Overview Tide is looking for a Senior Staff Software Engineer to help shape the Agentic Platform. This platform aims to support small businesses with advanced technology. The position focuses on designing, building, and refining software that improves both user experience and operational workflows. Collaboration and Impact This engineer will partner with teams across disciplines to deliver solutions that matter. The work will directly influence how small businesses interact with Tide’s products and services.

Role Overview JetBrains is looking for a Senior Fullstack Developer to focus on AIR Automations. This role involves working closely with a skilled team to build and improve automation solutions. The position calls for strong experience in both frontend and backend development to create reliable applications that support customer workflows. Location Options include Belgrade, Berlin, Madrid, Munich, Prague, or remote within Germany.

First Circle stands at the forefront of financial technology in South-East Asia, transforming the landscape for underserved SMEs. Having successfully enabled thousands of small businesses in the Philippines to access credit, we are now embarking on an ambitious journey to create a comprehensive Neobank. Our offerings will encompass multi-currency bank accounts, payment solutions, foreign exchange, corporate credit cards, and payroll services.We are seeking talented mid-level and senior software developers to join our team during this pivotal year of growth. The challenge of building in emerging markets like the Philippines is significant, especially with the current state of digital infrastructure. By developing nearly everything in-house, we tackle complex problems that many startups have found insurmountable, and the prospect we have ahead is immense.

Join our dynamic team as a Senior Full-Stack Engineer at Xsolla, where you will play a pivotal role in designing and developing innovative software solutions. This position offers an exciting opportunity to work on diverse projects in a fast-paced environment.

At CompStak, we are revolutionizing the commercial real estate industry by providing access to accurate and transparent data, enabling faster and more informed deals. Our platform aggregates hard-to-find information and makes it readily available for our members. Location: Belgrade, Hybrid (Currently, we operate three days per week in the office, subject to change)As a Senior Frontend Engineer, you will play a pivotal role in developing our Exchange & Enterprise applications, which are essential for our customers to search properties, analyze markets, and make data-driven decisions. You will be a key contributor to enhancing the user experience for thousands of users and will directly influence the performance and usability of our product.Join our small, experienced frontend team and help shape the main consumer-facing applications that empower our clients.

Join our dynamic team at Acumatica as a Senior Full Stack Developer, where you'll play a pivotal role in shaping the future of our reporting tools. Your responsibilities will include:Developing comprehensive reporting tools and engines, encompassing both backend and frontend components.Creating intuitive web interfaces, UI controls, and design tools for configuring and editing various reporting applications.Architecting new functionalities and taking ownership of feature implementation.Providing technical direction in the reporting domain and engaging in code reviews.Collaborating with product managers and business analysts to design product features related to reporting.Working with technical support teams to address support incidents, investigating and resolving issues as they arise.Enhancing and optimizing the existing codebase for better performance and maintainability.

Acumatica is looking for a Senior Quality Assurance Engineer to join the Frontend Development Team in Belgrade. This position focuses on upholding high quality standards for software products through careful testing and collaboration. Role overview The Senior Quality Assurance Engineer works alongside developers and product managers to find and resolve bugs, improve performance, and support a smooth user experience. Attention to detail and a proactive approach are essential in this role. What you will do Test frontend software to identify issues and verify fixes Work with team members to address bugs and suggest improvements Contribute to optimizing application performance Help maintain a high level of customer satisfaction through quality releases Requirements Experience in quality assurance for frontend software Strong collaboration skills with developers and product managers Commitment to delivering reliable and user-friendly solutions

Join Us as a Senior Software Developer (Kotlin Build Tools) At JetBrains, we are driven by our passion for code. Since our inception in 2000, we have dedicated ourselves to creating the most powerful and efficient developer tools available. Our tools automate routine checks and corrections, accelerating production and allowing developers to innovate and create freely. Kotlin, a language developed by JetBrains, is a modern programming language that targets Java, Android, JavaScript, WASM, and native (LLVM) platforms. Launched in 2016, Kotlin has quickly gained traction, and in 2019, it was recognized as Google's preferred language for Android development, subsequently becoming a leading choice for server-side development. A robust build system is essential for any programming language, including Kotlin. Our goal is to streamline the integration of Kotlin-supporting build systems within IntelliJ IDEA. We are committed to ensuring that Kotlin projects are accurately represented in the IntelliJ IDEA model, and that the import process is swift and reliable. We currently support various build systems such as Gradle, Maven, and IntelliJ IDEA’s in-built JPS, with potential plans to expand our offerings. We are seeking a seasoned Software Developer with a solid foundation in software engineering to join our team and contribute to this exciting endeavor. Our codebase is primarily written in Kotlin and Java 11, managed in Git repositories, some of which are publicly available on GitHub. Your Role: Develop and enhance tools for integrating Kotlin with various build systems. Refine Kotlin’s integration from build system representations into the IntelliJ IDEA project model. Focus on import performance improvements, reliability, and introducing new features. What We’re Looking For: A passion for solving complex and challenging problems. A minimum of five years of professional experience in Kotlin or Java development. A desire to enhance Kotlin support within IntelliJ IDEA. Ability to design and write clear, maintainable code. A solid understanding of the algorithms behind your code. Strong collaboration skills, with the ability to listen to others and provide sound reasoning for your ideas. A commitment to professional growth through mastering new technologies and methodologies. A sense of pride in your work. A keen interest in improving the Kotlin developer experience.