Software has moved to play a central role in network technology. From outstanding routing implementations like Bird and FRR to overlay networking technology such as OVN/OVS and Cilium, from kernel with SwitchDev to userspace with DPDK, from P4 to OpenFlow, the relationship between network innovation and software continues to deepen. We are building teams to bring the very best open source networking software to market in a well integrated and opinionated stack that brings the latest hyperscaler innovation to end users and enterprise customers.

We work with networking silicon providers to optimize Ubuntu and related applications for their ASICs, boards and appliances. We aim to provide a complete open source stack for data center networking, from bare metal through virtualization, container and serverless, and also to address IoT networking systematically.

You will have a good chance of success if you are an outstanding software engineer, passionate about networking, with a special interest in the interface of hardware ASICs for acceleration and software for innovation and control. We value experience in open switch initiatives such as SoNIC and DENT, and upstream experience with components such as routing, kernel networking, eBPF, DNS, firewalls and load balancers. Our selection process is rigorous and requires work from the candidate as six to eight interviews over a period of months. We look for excellent academic results and a commitment to quality, resilience, documentation, security and performance in your work.

At Canonical you will have the opportunity to engage with the broader open-source community and industry leading partners in developing future-proof networking solutions. We're looking for individuals who can help build a thriving community, contribute to a broad range of technologies, and contribute to the deployment of Ubuntu, Ubuntu Core, Private Clouds, MAAS and Kubernetes across a broad range of devices and use cases.

Location: we have network software engineering roles in APAC (Top-of-Rack switches) and Americas (SmartNIC/DPU) time zones.

What your day will look like

• Work with the most advanced operating systems and network application technologies available
• Participate upstream and deliver the Ubuntu SoNIC stack
• Collaborate with public clouds and network silicon providers
• Design and implement the best software-defined networking experience for the data center
• Write high-quality, well-designed, fast, secure and well-documented software
• Debug issues and produce high-quality fixes
• Collaborate proactively with a globally distributed organization
• Contribute to technical documentation to make it the best of its kind
• Display technical leadership internally, towards our partners, and in the open source communities
• Influence open-source projects and communities
• Work from home, with global travel twice a year for company events of up to two weeks duration

What we are looking for in you

• An exceptional academic track record
• Undergraduate degree in Computer Science or STEM, or a compelling narrative about your alternative path
• Drive and a track record of going above-and-beyond expectations
• Knowledge of networking: architecture, design, and protocols
• Understanding of Linux networking, from kernel to user space
• Fluency in C/C++ and at least one of Rust, Python or Golang
• Professional written and spoken English 
• Experience with Linux
• Excellent interpersonal skills, curiosity, flexibility, and accountability 
• Passion, thoughtfulness, and self-motivation 
• Excellent communication and presentation skills 
• Result-oriented, with a personal drive to meet commitments 
• Ability to travel twice a year, for company events up to two weeks each

Additional skills that you might also bring

• Familiarity with existing open source networking technologies: SONIC / SAI, kernel (e.g. eBPF, AF_XDP), DPDK, Switchdev, OVN, Open vSwitch.
• Familiarity with data path hardware acceleration protocols and interfaces, such as RDMA, RoCE, iWARP, NVMe, SR-IOV
• Computer architecture knowledge of x86, ARM, and RISC-V
• Experience in complex IP network engineering and implementation
• Experience with virtualization technologies, e.g., QEMU, KVM, etc.
• Previous contribution to open source projects and community involvement
• Performance engineering and security experience

What we offer you

We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognise outstanding performance. In addition to base pay, we offer a performance-driven annual bonus. We provide all team members with additional benefits, which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally.

• Distributed work environment with twice-yearly team sprints in person
• Personal learning and development budget of USD 2,000 per year
• Annual compensation review
• Recognition rewards
• Annual holiday leave
• Maternity and paternity leave
• Employee Assistance Programme
• Opportunity to travel to new locations to meet colleagues
• Priority Pass, and travel upgrades for long haul company events

About Canonical

Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open source projects and the platform for AI, IoT and the cloud, we are changing the world every day. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence - in order to succeed, we need to be the best at what we do. Canonical has been a remote-first company since its inception in 2004.​ Working here is a step into the future, and will challenge you to think differently, work smarter, learn new skills, and raise your game.

Canonical is an equal opportunity employer

We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration.

#LI-remote

We are representing a leading force in the decentralized exchange (DEX) space, specifically operating within the high-performance Solana ecosystem. 

Core Responsibilities

• Direct the execution of protocol and backend engineering teams, setting the pace for delivery and the bar for technical excellence.
• Architect and implement mission-critical trading infrastructure using Rust, focusing on extreme performance and reliability.
• Lead the development of core exchange primitives, including margin systems, liquidation mechanisms, and advanced liquidity models.
• Audit critical code paths to minimize latency, maximize execution quality, and improve the overall market maker experience.
• Foster a culture of rigorous engineering through deep code reviews, architectural guidance, and hands-on mentorship.

Requirement:

• Expert in Rust and have a proven track record of shipping high-performance, production-grade systems.
• Deep understanding of distributed systems, concurrency, and performance tuning for high-throughput environments.
• Strong familiarity with order book mechanics, perpetual futures, or derivatives market structure.
• Experience building matching engines, risk management systems, or liquidation engines is highly preferred.
• Experience with Solana (or similar high-performance chains) and a solid grasp of on-chain execution models and their inherent constraints.

We are representing a leading force in the decentralized exchange (DEX) space, specifically operating within the high-performance Solana ecosystem. 

Core Responsibilities

• Design and implement core exchange logic and smart contracts in Rust, tailored for high-throughput execution.
• Develop and refine sophisticated funding rate mechanisms to ensure market stability and balanced open interest.
• Build robust on-chain infrastructure, including Automated Market Makers (AMMs) and hybrid liquidity models that bridge the gap between on-chain and off-chain depth.
• Architect margin systems, liquidation engines, and real-time risk management logic; perform rigorous audits of critical code paths for security and efficiency.
• Act as the bridge between research and production, converting complex economic models and market microstructure theory into performant smart contract logic.
• Optimize protocol execution specifically for the Solana Virtual Machine (SVM), navigating unique runtime constraints and parallelization opportunities.

Technical Profile

• Expert-level Rust skills with a focus on memory safety, concurrency, and performance optimization.
• Deep, hands-on experience with Solana and the SVM. You should be comfortable building production-grade programs (with or without the Anchor framework).
• A proven track record of shipping decentralized protocols (Perpetuals, DEXs, or Yield Aggregators).
• Strong command of derivatives mechanics, perpetual futures, and exchange economics.
• The ability to anticipate how protocol-level changes affect market participants, liquidity providers, and overall system solvency.

Summary: Join a leading global payments firm as a Soroban Smart Contracts Developer. Leverage the Stellar network to revolutionize cross-border settlements by developing smart contracts and integrating anchor services. Your expertise will enhance the efficiency and security of our payment solutions.

Responsibilities:

• Develop and optimize Soroban smart contracts for cross-border payment solutions.
• Integrate anchor services within the Stellar network framework.
• Collaborate with cross-functional teams to ensure seamless integration and functionality.
• Conduct testing and debugging to ensure robust performance of smart contracts.
• Stay updated with the latest trends and developments in blockchain technology and payments.
• Document development processes and provide technical support to relevant stakeholders.

Required Skills:

• Proven experience in developing with Stellar SDKs and Rust programming language.
• Strong understanding of blockchain technology and decentralized networks.
• Familiarity with smart contract development and deployment processes.
• Excellent problem-solving skills and attention to detail.
• Strong communication and collaboration skills.
• Ability to work in a dynamic and fast-paced environment.

Summary: Join a pioneering research-led organization focused on developing a sovereign, decentralized communication stack. As a key player in our team, you will stress-test networks and simulate Byzantine attacks to ensure robust and resilient communication systems.

Responsibilities:

• Design and implement stress tests for network infrastructures.
• Simulate Byzantine attacks to evaluate network security and resilience.
• Collaborate with a cross-functional team to enhance the communication stack.
• Analyze and report findings to improve network protocols and architecture.
• Contribute to the development of innovative solutions for decentralized communication challenges.

Required skills:

• Experience with network simulation tools.
• Proficiency in Rust or Go programming languages.
• Strong analytical and problem-solving skills.
• Excellent communication and collaboration abilities.
• Demonstrated experience in stress-testing networks and security protocols.

Summary: Join a leading New York-based crypto research and development lab specializing in Layer 2 scaling solutions. We are seeking a talented individual to research consensus algorithms and implement protocol upgrades, driving innovation in the blockchain space.

Responsibilities:

• Conduct in-depth research on consensus algorithms to enhance blockchain scalability.
• Design and implement protocol upgrades for Layer 2 scaling solutions.
• Collaborate with a team of experts to develop cutting-edge blockchain technologies.
• Analyze and optimize existing protocols to improve performance and security.
• Contribute to technical discussions and provide insights into cryptographic solutions.

Required skills:

• Strong background in Cryptography.
• Proficiency in programming languages such as Go or Rust.
• Experience with blockchain technologies and consensus mechanisms.
• Strong analytical and problem-solving skills.
• Ability to work collaboratively in a fast-paced research environment.

Summary: Join our innovative proprietary trading firm dedicated to developing cutting-edge algorithmic execution tools for the cryptocurrency markets. In this role, you will focus on creating ultra-low-latency execution engines using C++ to enhance trading strategies and performance.

Responsibilities:

• Design and develop advanced algorithmic trading systems with a focus on ultra-low-latency execution.
• Optimize and enhance existing trading strategies and systems.
• Collaborate with quantitative researchers and traders to implement new strategies.
• Troubleshoot, test, and maintain high-performance trading applications.
• Stay updated with the latest developments in crypto markets and HFT technologies.

Required skills:

• Expert-level proficiency in C++ or Rust programming.
• Strong background in high-frequency trading (HFT) or market making.
• Experience with low-latency system design and optimization.
• Solid understanding of algorithmic trading strategies and cryptocurrency markets.
• Excellent problem-solving skills and attention to detail.

We are hiring for one of our ecosystem projects.

The Crypto Analyst will conduct in-depth market and technical research to provide insights into crypto markets, blockchain technologies, and different Web3 related technologies. You will collaborate with cross-functional teams, including engineers and product managers, to drive research initiatives and contribute to the development of cutting-edge solutions in the Web3 space.

If you are passionate and enthusiastic about the web3 industry, come and join our team!

In this role, you will:

• Monitor and analyze crypto market trends, including price movements, trading volumes, risk and market sentiment; Provide recommendations to mitigate risks and optimize investment or strategic decisions.
• Identify emerging projects, tokens, and blockchain protocols with high growth potential.
• Conduct in-depth research on Web3 market, technologies, blockchain protocols, and dApps.
• Design and conduct experiments, simulations, and analysis to explore and evaluate innovative solutions.
• Develop and implement novel algorithms, models, and methodologies to address technical challenges in the blockchain space.
• Contribute to open-source projects and actively engage with the blockchain research community.
• Provide thought leadership and technical content efforts for the blockchain community
• Stay updated on the latest advancements, academic papers, and industry trends in the field of blockchain and Web3.

You might thrive in this role if you have:

• Bachelor degree in Computer Science, Engineering, or a related field with a focus on web3, ZK or distributed systems.
• 2+ years of experience in financial analysis, market research, or technical analysis in the crypto/web3 industry.
• Proven track record of conducting market and technical research in the crypto or blockchain space.
• Proficiency in programming languages commonly used in the blockchain ecosystem, such as Solidity, Rust, or Go.
• Experience with blockchain platforms and frameworks, such as Ethereum, Polkadot, or Cosmos.
• Familiarity with crypto exchanges, wallets, and custody solutions.
• Strong analytical and critical thinking skills.
• Excellent written and verbal communication skills for presenting complex data.
• Ability to work independently and in a fast-paced, dynamic environment.