Explore 3 open source program developer jobs from 2 hiring companies in Gustine, CA, US. Filter by remote, salary, experience, and company, then open any listing to apply.

open-source-program-developer

Open Source Program Developer

Newman

Los Banos

San Jose

Patterson

Turlock

Modesto

Livingston

Atwater

Ceres

Delhi

Merced

Riverbank

Winton

Gilroy

Ripon

Hollister

Salida

Manteca

Morgan Hill

Open Source Program Developer Jobs

Cisco

Nutanix

Remote

Hybrid

The application window is expected to close on: 06/23/2026Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received.<div><div><h2>Meet the Team </h2></div><div>Isovalent, now part of Cisco, is the company founded by the creators of Cilium and eBPF. Cisco Isovalent builds open-source software and enterprise solutions solving networking, security, and observability needs for modern platforms. The flagship technologies, Cilium and Tetragon, are the choice of numerous, industry-leading, global organizations. </div><div>We believe in fostering an inclusive and diverse workplace where every team member feels valued, respected, and empowered. We believe that every employee contributes to our success, and we are committed to fostering an environment where everyone can thrive. We encourage candidates from all backgrounds to apply and join us in our mission to deliver exceptional products and services. </div><div><h2>Your Impact </h2></div><div>Tetragon is a flexible, observability and runtime security tool that delivers real-time insights and enforcement. Leveraging the power of eBPF, Tetragon provides low-overhead, in-kernel visibility and intelligence across diverse environments.  </div><div>As a Technical Leader, you will be at the forefront of advancing Tetragon’s capabilities. You will guide architectural direction while staying deeply engaged in building the systems that power our platform. Your impact will include extending Tetragon’s capabilities to protect a variety of platforms, building infrastructure to deliver protective shields, and creating data pipelines to monitor and analyze data streams. </div><div>You will collaborate closely with teams across Cisco, to integrate Tetragon into multiple platforms and adapt it to their needs and capabilities. In this role, you’ll solve some of the most complex system-level challenges in observability and infrastructure, helping Tetragon evolve to meet the needs of multiple devices. </div><div> </div><div>What you’ll do: </div><div><ul><li>Design and implement Runtime Security features for Tetragon. </li></ul></div><div><ul><li>Develop high-quality Go (and eBPF) code for the Tetragon project. </li></ul></div><div><ul><li>Design and optimize systems for large-scale data collection, aggregation, and analysis. </li></ul></div><div><ul><li>Partner across teams to align requirements, define integration points, and deliver production-ready and secure solutions. </li></ul></div><div><ul><li>Contribute to open-source projects and represent Cisco Isovalent in community discussions. </li></ul></div><div><ul><li>Participate in architecture reviews, code reviews, and documentation. </li></ul></div><div><h2>Minimum Qualifications </h2></div><div><ul><li>Bachelors &#43; 8 years of related experience, or Masters &#43; 6 years of related experience, or PhD &#43; 3 years of related experience </li></ul></div></div><div><div><ul><li>8&#43; years of experience in systems programming (C, Go, or similar; Tetragon is primarily written in Go). </li></ul></div><div><ul><li>Experience leading technical direction or architecture for distributed systems, observability, runtime security, or data infrastructure. </li></ul></div><div><ul><li>Experience in system-level development </li></ul></div><div><ul><li>Experience in any of these areas: Linux systems, Kernel-level development BPF or eBPF programming for observability or security use cases  </li></ul></div><div><h2>Preferred Qualifications </h2></div><div><ul><li>Strong written and verbal communication skills. </li></ul></div><div><ul><li>Knowledge of eBPF for observability or security use cases. </li></ul></div><div><ul><li>Experience in debugging and optimization with a track record of delivering scalable and secure systems. </li></ul></div><div><ul><li>Solid background in Linux systems and kernel-level concepts. </li></ul></div><div><ul><li>Familiarity with CVE workflows, vulnerability data pipelines, or security event modeling. </li></ul></div><div><ul><li>Exposure real-time streaming/aggregation systems and database performance optimization. </li></ul></div><div><ul><li>Experience with developing Linux applications for resource-constrained systems </li></ul></div><div><ul><li>Contributions to open-source projects in networking, observability, or distributed systems. </li></ul></div><div><ul><li>Experience in leading projects with multiple stakeholders </li></ul></div><div><ul><li>Experience working across diverse, distributed teams </li></ul></div></div><h1>Why Cisco? </h1>At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere. We are Cisco, and our power starts with you. <h1>Message to applicants applying to work in the U.S. and/or Canada:</h1>The starting salary range posted for this position is $210,600.00 to $305,100.00 and reflects the projected salary range for new hires in this position in U.S. and/or Canada locations, not including incentive compensation*, equity, or benefits.Individual pay is determined by the candidate&#39;s hiring location, market conditions, job-related skillset, experience, qualifications, education, certifications, and/or training. The full salary range for certain locations is listed below. For locations not listed below, the recruiter can share more details about compensation for the role in your location during the hiring process.U.S. employees are offered benefits, subject to Cisco’s plan eligibility rules, which include medical, dental and vision insurance, a 401(k) plan with a Cisco matching contribution, paid parental leave, short and long-term disability coverage, and basic life insurance. Please see the Cisco careers site to discover more benefits and perks.  Employees may be eligible to receive grants of Cisco restricted stock units, which vest following continued employment with Cisco for defined periods of time.U.S. employees are eligible for paid time away as described below, subject to Cisco’s policies:<ul><li>10 paid holidays per full calendar year, plus 1 floating holiday for non-exempt employees</li><li>1 paid day off for employee’s birthday, paid year-end holiday shutdown, and 4 paid days off for personal wellness determined by Cisco</li><li>Non-exempt employees** receive 16 days of paid vacation time per full calendar year, accrued at rate of 4.92 hours per pay period for full-time employees</li><li>Exempt employees participate in Cisco’s flexible vacation time off program, which has no defined limit on how much vacation time eligible employees may use (subject to availability and some business limitations)</li><li>80 hours of sick time off provided on hire date and each January 1st thereafter, and up to 80 hours of unused sick time carried forward from one calendar year to the next</li><li>Additional paid time away may be requested to deal with critical or emergency issues for family members</li><li>Optional 10 paid days per full calendar year to volunteer</li></ul>For non-sales roles, employees are also eligible to earn annual bonuses subject to Cisco’s policies.Employees on sales plans earn performance-based incentive pay on top of their base salary, which is split between quota and non-quota components, subject to the applicable Cisco plan. For quota-based incentive pay, Cisco typically pays as follows:<ul><li>.75% of incentive target for each 1% of revenue attainment up to 50% of quota;</li><li>1.5% of incentive target for each 1% of attainment between 50% and 75%;</li><li>1% of incentive target for each 1% of attainment between 75% and 100%; and</li><li>Once performance exceeds 100% attainment, incentive rates are at or above 1% for each 1% of attainment with no cap on incentive compensation.</li></ul>For non-quota-based sales performance elements such as strategic sales objectives, Cisco may pay 0% up to 125% of target. Cisco sales plans do not have a minimum threshold of performance for sales incentive compensation to be paid.The applicable full salary ranges for this position, by specific state, are listed below:New York City Metro Area:$210,600.00 - $350,800.00Non-Metro New York state &amp; Washington state:$189,300.00 - $312,200.00* For quota-based sales roles on Cisco’s sales plan, the ranges provided in this posting include base pay and sales target incentive compensation combined.** Employees in Illinois, whether exempt or non-exempt, will participate in a unique time off program to meet local requirements.

Software Engineer Technical Leader - Tetragon

Software Engineer

8+ years systems programming (C, Go, or similar); experience in distributed systems, observability, runtime security, or data infrastructure; strong Linux/kernel knowledge; open-source contributions preferred.

The application window is expected to close on: 06/23/2026Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received.<div><div><h2>Meet the Team </h2></div><div>Isovalent, now part of Cisco, is the company founded by the creators of Cilium and eBPF. Cisco Isovalent builds open-source software and enterprise solutions solving networking, security, and observability needs for modern cloud native infrastructure. The flagship technologies, Cilium and Tetragon, are the choice of numerous, industry-leading, global organizations. </div><div>We believe in fostering an inclusive and diverse workplace where every team member feels valued, respected, and empowered. We believe that every employee contributes to our success, and we are committed to fostering an environment where everyone can thrive. We encourage candidates from all backgrounds to apply and join us in our mission to deliver exceptional products and services. </div><div><h2>Your Impact </h2></div><div>Tetragon is a flexible, Kubernetes-aware observability and security tool that delivers real-time insights and enforcement. Leveraging the power of eBPF, Tetragon provides low-overhead, in-kernel visibility and intelligence across diverse environments.  </div><div>As a Technical Leader, you will be at the forefront of advancing Tetragon’s capabilities. You will guide architectural direction while staying deeply engaged in building the systems that power our platform. Your impact will allow Tetragon to be used on resource constraint platforms as well as scale its capabilities to meet the increasing demands of security protection across a variety of platforms.   </div><div>You will collaborate closely with teams across Cisco to understand different use-cases and optimize Tetragon to meet different requirements. In this role, you’ll solve some of the most complex system-level challenges in observability and infrastructure, helping Tetragon evolve to meet the needs of the modern runtime security landscape. </div><div>What you’ll do: </div><div><ul><li>Develop high-quality Go (and eBPF) code for the Tetragon project. </li></ul></div><div><ul><li>Understand and analyze Tetragon’s performance and overheads </li></ul></div><div><ul><li>Design and implement novel ways to minimize Tetragon’s CPU overhead and memory footprint </li></ul></div><div><ul><li>Partner across teams to align requirements, define integration points, and deliver production-ready solutions. </li></ul></div><div><ul><li>Contribute to open-source projects and represent Cisco Isovalent in community discussions. </li></ul></div><div><ul><li>Participate in architecture reviews, code reviews, and documentation. </li></ul></div></div><div><div><h2>Minimum Qualifications </h2></div><div><ul><li>Bachelors &#43; 8 years of related experience, or Masters &#43; 6 years of related experience, or PhD &#43; 3 years of related experience </li></ul></div><div><ul><li>8&#43; years of experience in systems programming (C, Go, or similar; Tetragon is primarily written in Go). </li></ul></div><div><ul><li>Experience in any of these areas: Linux systems, Kernel-level development  or eBPF programming for observability or security use cases, or experience in building scalable Go systems. </li></ul></div><div><ul><li>Experience in performance analysis and optimization. </li></ul></div><div><h2>Preferred Qualifications </h2></div><div><ul><li>Experience in analyzing and improving the performance and memory consumption of eBPF and Go programs. </li></ul></div><div><ul><li>Experience in debugging and optimization with a track record of delivering scalable systems. </li></ul></div><div><ul><li>Knowledge of eBPF for observability or security use cases. </li></ul></div><div><ul><li>Solid background in Linux systems and kernel-level concepts. </li></ul></div><div><ul><li>Familiarity with Kubernetes and cloud-native environments. </li></ul></div><div><ul><li>Exposure to real-time streaming/aggregation systems and database performance optimization. </li></ul></div><div><ul><li>Contributions to open-source projects in networking, observability, or distributed systems. </li></ul></div><div><ul><li>Experience working across diverse, distributed teams. </li></ul></div></div><h1>Why Cisco? </h1>At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere. We are Cisco, and our power starts with you. <h1>Message to applicants applying to work in the U.S. and/or Canada:</h1>The starting salary range posted for this position is $210,600.00 to $305,100.00 and reflects the projected salary range for new hires in this position in U.S. and/or Canada locations, not including incentive compensation*, equity, or benefits.Individual pay is determined by the candidate&#39;s hiring location, market conditions, job-related skillset, experience, qualifications, education, certifications, and/or training. The full salary range for certain locations is listed below. For locations not listed below, the recruiter can share more details about compensation for the role in your location during the hiring process.U.S. employees are offered benefits, subject to Cisco’s plan eligibility rules, which include medical, dental and vision insurance, a 401(k) plan with a Cisco matching contribution, paid parental leave, short and long-term disability coverage, and basic life insurance. Please see the Cisco careers site to discover more benefits and perks.  Employees may be eligible to receive grants of Cisco restricted stock units, which vest following continued employment with Cisco for defined periods of time.U.S. employees are eligible for paid time away as described below, subject to Cisco’s policies:<ul><li>10 paid holidays per full calendar year, plus 1 floating holiday for non-exempt employees</li><li>1 paid day off for employee’s birthday, paid year-end holiday shutdown, and 4 paid days off for personal wellness determined by Cisco</li><li>Non-exempt employees** receive 16 days of paid vacation time per full calendar year, accrued at rate of 4.92 hours per pay period for full-time employees</li><li>Exempt employees participate in Cisco’s flexible vacation time off program, which has no defined limit on how much vacation time eligible employees may use (subject to availability and some business limitations)</li><li>80 hours of sick time off provided on hire date and each January 1st thereafter, and up to 80 hours of unused sick time carried forward from one calendar year to the next</li><li>Additional paid time away may be requested to deal with critical or emergency issues for family members</li><li>Optional 10 paid days per full calendar year to volunteer</li></ul>For non-sales roles, employees are also eligible to earn annual bonuses subject to Cisco’s policies.Employees on sales plans earn performance-based incentive pay on top of their base salary, which is split between quota and non-quota components, subject to the applicable Cisco plan. For quota-based incentive pay, Cisco typically pays as follows:<ul><li>.75% of incentive target for each 1% of revenue attainment up to 50% of quota;</li><li>1.5% of incentive target for each 1% of attainment between 50% and 75%;</li><li>1% of incentive target for each 1% of attainment between 75% and 100%; and</li><li>Once performance exceeds 100% attainment, incentive rates are at or above 1% for each 1% of attainment with no cap on incentive compensation.</li></ul>For non-quota-based sales performance elements such as strategic sales objectives, Cisco may pay 0% up to 125% of target. Cisco sales plans do not have a minimum threshold of performance for sales incentive compensation to be paid.The applicable full salary ranges for this position, by specific state, are listed below:New York City Metro Area:$210,600.00 - $350,800.00Non-Metro New York state &amp; Washington state:$189,300.00 - $312,200.00* For quota-based sales roles on Cisco’s sales plan, the ranges provided in this posting include base pay and sales target incentive compensation combined.** Employees in Illinois, whether exempt or non-exempt, will participate in a unique time off program to meet local requirements.

Technical Leader, Performance Engineering - Tetragon

Technical Leader

8+ years in systems programming (C/Go), Linux/kernel/eBPF experience, performance optimization, collaboration and open-source contributions.

Engineering
 
 San Jose,
 California
 

 Req.Num.: 31165

Hungry, Humble, Honest, with Heart. The OpportunityNutanix is a global leader in cloud software and Hyperconverged infrastructure solutions, making infrastructure invisible so that IT can focus on the applications and services that power their business. Companies around the world use Nutanix Enterprise Cloud OS software to bring one-click application management and mobility across public, private and distributed edge clouds so they can run any application at any scale with a dramatically lower total cost of ownership. The result is organizations that can rapidly deliver a high-performance IT environment on demand, giving application owners a true cloud-like experience. About the TeamAt Nutanix, you will be part of the Data Platform team – engineers  working across India and the US team and passionate about open source and distributed data infrastructure. We build and operate internal platforms around ClickHouse (analytical database) and NATS (streaming service) that power analytics and real-time workloads across 10+ Nutanix products. Product teams depend on us for reliable, scalable, and performant data solutions — and we take pride in being the subject matter experts (SMEs) for ClickHouse and NATS within Nutanix. We love open source, have actively contributed over 50 patches upstream, maintain internal forks wherever required and bring the best of the OSS world into our ecosystem.  The team culture emphasizes unity, deep engineering, a shared focus on achieving goals, fostering collaboration and innovation. Working closely together, team members value each other's contributions and support one another in a dynamic and fast-paced environment. You will report to a Staff Engineer at Nutanix. The work setup is hybrid, allowing for flexibility and a healthy work-life balance. As a new hire, you will be expected to work from the office three days a week, ensuring face-to-face interactions with your team members and promoting a sense of camaraderie and community within the Data Platform team. At Nutanix, we understand the importance of work-life balance and prioritize the well-being of our employees. Therefore, there are no travel requirements for this position, allowing you to focus on your work and professional development without the added stress of frequent travel. Your Role<ul><li>Design, build, and maintain scalable distributed data systems using ClickHouse and NATS.</li><li>Write high-quality, efficient, and maintainable code for core data platform components.</li><li>Participate in ClickHouse and NATS open-source communities — stay current with updates, usage patterns, and contribute wherever required.</li><li>Debug and optimize distributed systems in production to ensure performance and reliability.</li><li>Evaluate emerging technologies and open-source tools that can strengthen the platform and drive adoption across teams.</li><li>Build and operate robust internal platforms that power multiple engineering teams within Nutanix.</li></ul> What You Will Bring<ul><li>Bachelor’s or Master’s degree in Computer Science or a related field.</li><li>Passion for programming with strong expertise in one or more languages — C++ or Go preferred.</li><li>Solid foundation in data structures and algorithms.</li><li>Deep understanding of operating system internals, networking, and distributed systems concepts.</li><li>Experience designing and building high-performance, fault-tolerant, and scalable distributed data systems atop Kubernetes.</li><li>Familiarity with analytical databases (e.g., ClickHouse, Druid) or streaming systems (e.g., NATS, Kafka, Pulsar).</li><li>Proven ability to work with large, complex codebases and deliver high-quality, maintainable software.</li><li>Strong grasp of design patterns and the ability to evaluate trade-offs when applying them.</li><li>Prior open-source contributions, especially to distributed databases or data infrastructure projects, are a strong plus.</li></ul> Work ArrangementHybrid: This role operates in a hybrid capacity, blending the benefits of remote work with the advantages of in-person collaboration. In locations where our workplace policy applies (i.e. San Jose, Durham, Mexico City, Bangalore, Pune, Hoofddorp, Belgrade, Barcelona, Singapore, Sydney and Tokyo), employees are expected to work onsite a minimum of 3 days per week to foster collaboration, team alignment, and access to in-office resources. Workplace type may vary based on location and team requirements. Please speak with your recruiter for details. Additional team-specific guidance and norms will be provided by your manager. The pay range for this position at commencement of employment is expected to be between USD $ 143,200 and USD $ 285,598 per year.However, base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. The total compensation package for this position may also include other elements, including a sign-on bonus, restricted stock units, and discretionary awards in addition to a full range of medical, financial, and/or other benefits (including 401(k) eligibility and various paid time off benefits, such as vacation, sick time, and parental leave), dependent on the position offered. Details of participation in these benefit plans will be provided if an employee receives an offer of employment.If hired, employee will be in an “at-will position” and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors. Our application deadline is 40 days from the date of posting. In good faith, the posting may be removed prior to this date if the position is filled or extended in good faith. 
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Member of Technical Staff 3 (CPaaS Data Platform Team)

Member of Technical Staff

Bachelor’s or Master’s in Computer Science or related field; strong programming skills in C++ or Go; knowledge of data structures, algorithms, OS internals, networking, distributed systems; experience with Kubernetes, analytical databases or streaming systems; open-source contributions a plus.

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Open Source Program Developer Jobs in Gustine, CA, US

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