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300K System Engineer Jobs in Missouri (NOW HIRING)

300K System Engineer information

What is a 300k system engineer?

A 300K System Engineer is a professional responsible for designing, implementing, and maintaining systems that operate at or around 300 Kelvin (approximately 27°C or 80°F), often in scientific or industrial environments. These engineers work with equipment and processes where temperature control near room temperature is critical, such as in cryogenics, semiconductor manufacturing, or laboratory settings. Their role includes troubleshooting, optimizing system performance, and ensuring safety and compliance with relevant standards. The specific duties can vary depending on the industry and the type of systems involved.

What are the key skills and qualifications needed to thrive as a 300k system engineer, and why are they important?

To thrive as a 300K System Engineer, you need advanced knowledge of systems architecture, network engineering, and strong problem-solving skills, typically supported by a degree in computer science or a related field. Familiarity with enterprise-level operating systems (Windows, Linux), virtualization platforms, cloud services (AWS, Azure), and certifications like Cisco CCIE or Microsoft MCSE are often required. Exceptional communication, teamwork, and project management skills set top performers apart in this role. These competencies are crucial for designing, implementing, and maintaining complex IT infrastructure that supports business-critical operations.

What are some common challenges faced by system engineers working on large-scale, high-stakes projects, and how can they overcome them?

System Engineers handling high-value, complex projects often face challenges such as integrating diverse technologies, managing cross-functional teams, and ensuring high reliability under tight deadlines. Collaborating closely with software developers, network specialists, and project managers is crucial to align technical solutions with business goals. Effective communication, proactive risk management, and continuous learning are key strategies for overcoming these challenges and delivering robust, scalable systems. Additionally, staying updated on industry best practices and leveraging automation can streamline workflow and improve system performance.

What is the difference between 300K System Engineer vs Network Engineer?

Aspect300K System EngineerNetwork Engineer
CertificationsCCNP, CCIE, CISSP, AWS/Azure certificationsCCNA, CCNP, CompTIA Network+
Work EnvironmentData centers, cloud environments, enterprise ITNetwork infrastructure, routing, switching, security
Industry UsageTech, finance, healthcare, large enterprisesTelecom, IT services, enterprise networks

The 300K System Engineer and Network Engineer roles share certifications like CCNP but differ mainly in focus. The 300K System Engineer typically works with enterprise systems, cloud platforms, and infrastructure, while Network Engineers focus on network design, security, and connectivity. Both roles are vital in large organizations, but the 300K System Engineer often commands higher salaries due to broader responsibilities in system architecture and cloud integration.

What cities in Missouri are hiring for 300K System Engineer jobs?

Cities in Missouri with the most 300K System Engineer job openings:

Infographic showing various 300K System Engineer job openings in Missouri as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Senior Platform Security Engineer (100% Remote within Spain)

ApplyMint

California, MO • On-site

$81 - $116/hr

Other

Medical, Dental

Posted yesterday

New


Job description

Welcome to the good side of tech

You might have heard about us, but with a different name: Doctoralia. It all started 12 years ago when we asked ourselves: is anyone in healthcare thinking about patients? We jumped in and we empowered patients by giving them access to leave and read reviews about their visit. We then provided doctors with the technology to manage bookings easily and save time, so they could devote themselves to what they always wanted: treating patients. And today is the day in which we ask you: wanna join us in the next step of making the healthcare experience more human?

Docplanner at scale

We are leaders in 13 countries so far, and more than 90 million patients trust us every month. 300k+ specialists believe in us and our product, and so do leading venture capital funds such as Point Nine Capital, Goldman Sachs Asset Management and One Peak Partners. And yet, employing over 2.500 people all over the globe, we managed to keep the startup-mindset we started with over 10 years ago.

How does Docplanner Tech fit here?

At Docplanner Tech we are a diverse group of over 400 people working in Engineering, Data, and Product teams. We are responsible for building the product for all locations. Many of us have been here for over 5 years, yet we still welcome each new person with great joy and excitement.

We could tell you about us, but we will let our reviews on Glassdoor speak for themselves. In case you’d like to see how it feels to be 100% yourself at work, here’s a video of us.

And why should you join us?

Because it feels good to tell your family and your friends how you made the world a little bit better. You go to bed knowing that what you do matters, and that your talents align with your beliefs.

We want to make the healthcare experience more human, and that starts with you being you. We believe that taking the diversity of human experience into account makes a better healthcare experience for all . We’re not just different: we embrace diversity. We will encourage you to come to work your whole self, and that includes not coming to the office at all if you prefer not to, as we’re 100% remote friendly.

Job Description

The Internal Platform is a pivotal foundation that accelerates product development by providing a reliable, scalable, and self-service ecosystem. It supports the entire software lifecycle and is meticulously tailored to meet the organization’s technological needs and strategic direction.

The platform enables development teams to operate autonomously in 80% of cases, reducing dependency on the Internal Platform team, and ensuring that compliance, security, and business continuity are integrated across the entire platform – defending general reliability of services, and data integrity.

Overall, a platform engineering team plays a critical role in ensuring a company’s technology infrastructure is reliable and scalable.

The Internal Platform team consists of 34 people including 27 individual contributors 2 Staff Engineers, 4 Engineering Managers and Head of Internal Platform. The team is organized in a way to efficiently address Stakeholders needs.

What are the challenges in the team?

  • Platform Security is a team within the Internal Platform. The team is a first point of contact for the Global Security Team. The team is responsible for security and integrity of the underlying infrastructure that supports the organization, safeguarding the platform from potential vulnerabilities, threats, and attacks.

  • Developing and maintaining tools for Global Security in order to deliver vulnerability management platforms for application triaging and continuous compliance

  • The complexity of the Docplanner organization: Docplanner is a complex organization with multiple teams working on various products and services. One of the main challenges for the platform security engineer is to understand and integrate the diverse technology stacks used by different teams.

  • Scalability and reliability of systems: As Docplanner grows and expands, the demand for the technology infrastructure also increases. The platform engineering team must ensure that the systems are designed to handle high traffic, are scalable, and secure

Who will you work closely with?

  • Global Security – as the main external stakeholder for security initiatives. You’ll collaborate on platform compliance, risk management, and act as a technical point of contact during escalated incidents such as DDoS or abuse cases.

  • PMS (Practice Management Systems) teams – to audit existing systems, support secure migration to the central platform, and interpret global security and legal requirements in the context of PMS implementations.

  • Core Team within Internal Platform – by consulting on technical compliance, networking standards, and resolving misconfigurations or vulnerabilities detected across platform components.

  • Experience Teams – by providing guidance on infrastructure-related application security topics, secure encryption practices, and collaborating on secure CSP integrations.

  • Legal – to ensure alignment with data protection regulations, encryption standards, and locality requirements. You’ll use their insights to assess and improve the security posture of the platform.

How would you be impacting our mission?

  • Making sure that our platform is compliant with the best industry practices and standards for security (ISO27001, C5, SOC2)

  • Help us to introduce security on every step of our platform lifecycle

  • Ability to vigilantly understand and mitigate security threats before they arise

  • Optimize system scalability and cost efficiency

  • Development, monitoring, and maintenance of Kubernetes clusters on several continents.

  • CI / CD development and maintenance.

  • Make sure that all of our services are deployed in a way that makes them highly available.

  • Fixing urgent issues and optimizing performance.

  • Support other team members in their daily work.

Qualifications

What will help you thrive?

  • At least 5 years of experience related with security

  • Vast experience with container orchestration platforms like Kubernetes and how to secure them (must-have).

  • You know how to maintain, develop policy for security-focused CNI/Service Mesh (eg. Calico, Cilium).

  • You know how to scan for and manage vulnerabilities at scale.

  • You have experience with Hashicorp Vault.

  • You know why and how to use Terraform and popular CI/CD tools.

  • You know about building scalable and secure production HA environments using AWS.

  • You know your ways around network security services eg. AWS WAF/Cloudflare.

  • You are not afraid of developing tools or scripts in Bash or GO to automate work.

  • You can communicate in English (both spoken and written – min. B2 level).

  • You know how to bring people on your side when talking about security and best practices.

Let’s talk money

  • A salary adequate to your experience and skills.

  • Flexible remuneration and benefits system via Flexoh, which includes: restaurant card, transportation card, kindergarten, and training tax savings.

True flexibility and work-life balance

  • Remote or hybrid work model with our hub in Barcelona.

  • Flexible working hours (fully flexible, as in most cases you only have to be on a couple of meetings weekly).

  • Summer intensive schedule during July and August (work 7 hours, finish earlier).

  • 23 paid holidays, with exchangeable local bank holidays.

  • Additional paid holiday on your birthday or work anniversary (you choose what you want to celebrate).

Health comes first

  • Private healthcare plan with Adeslas for you and subsidized for your family (medical and dental).

  • Access to hundreds of gyms for a symbolic fee in partnership for you and your family with Andjoy.

  • Access to iFeel, a technological platform for mental wellness offering online psychological support and counseling.

Keep growing with us

  • Free English and Spanish classes.

We promote and embrace equal opportunities in our hiring process, and also every day at work. When you apply for our roles you receive equal treatment regardless of age, disabilities, gender reassignment, marital or civil partner status, pregnancy or parental status, race, colour, nationality, ethnic or national origin, religion or belief, sex, sexual orientation or any other dimension of human difference. If you require additional support in your recruitment process, we kindly encourage you to let us know. Behind those words you’re reading, there’s a person (hi!) who already helped a candidate by adapting the interviews, and now we’re lucky to have this person with us. So, even if you’ve never asked for it before, may this serve as a sign that, now, you can do so. We can only truly be equal if we adapt to each other.

“We believe all humans, in all their beautiful diversity, should have equal rights, dignity and respect. Period.” Mariusz Gralewski, CEO

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