Principal Application Engineer Jobs
Principal Application Engineer jobs are open across enterprise software, cloud infrastructure, fintech, and healthtech, from mid-level to staff and principal, with specializations in API integration, platform architecture, and customer-facing technical solutions. Scan the live roles below and apply to whichever ones fit.
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Job Description and Requirements
Randolph-Brooks Federal Credit Union is currently searching for an experienced and talented Principal Application Security Engineer to join our amazing IT Security team!
The Principal Application Security Engineer will have the ability to work a hybrid schedule (remote/onsite) after a period of training (time frame may vary). Training will take place at the RBFCU Administrative Service Center: 1 Ikea-RBFCU Pkwy, Live Oak, Texas 78233.
All applicants must reside within the state of Texas and have the capability of performing all of the work from their home in Texas.
To successfully work from home, employees must have access to a minimum internet connection as noted by RBFCU.
- Must have a reliable home internet provider and the ability to hard wire a connection directly to modem (Ethernet cable provided). Must be able to provide a workspace at home that is safe, suitable for work, and within a distraction free environment
The Principal Application Security Engineer is an enterprise technical leader responsible for shaping and scaling application and product security strategy across the organization. The role leads the most complex and consequential security architecture decisions, establishes secure engineering standards and reference architectures, and creates platform-level capabilities that make secure development the default. The Principal Engineer influences senior technology leaders, mentors security and engineering talent, addresses emerging risks, and drives measurable improvements across the software ecosystem.
Essential Functions and Responsibilities:
- Define the multi-year technical strategy, target state, standards, and capability roadmap for application and product security in alignment with business and technology priorities.
- Lead security architecture, threat modeling, and design decisions for the organization’s highest-risk, most complex, or most strategically important systems.
- Establish enterprise guardrails, secure defaults, paved paths, reference architectures, and engineering standards spanning applications, APIs, cloud, data, containers, identity, and infrastructure.
- Architect and guide the development of scalable application security platforms, automation, telemetry, risk analytics, and CI/CD controls used across the enterprise.
- Identify systemic risk patterns, anticipate emerging threats, and sponsor cross-functional programs addressing AI security, software supply chain risk, cloud-native security, and platform resilience.
- Provide authoritative technical guidance for critical vulnerabilities, security incidents, risk acceptances, acquisitions, major transformations, and executive-level technology decisions.
- Define measurement frameworks that connect engineering practices and security controls to risk reduction, business outcomes, developer experience, and operational effectiveness.
- Influence senior engineering, architecture, product, risk, and business leaders to prioritize and adopt strategic security improvements.
- Develop technical talent through mentorship, design and code review, communities of practice, succession planning, and raising expectations for engineering excellence.
- Represent the organization in industry forums, peer networks, strategic vendor engagements, or professional communities as appropriate. All other duties as assigned (note: essential functions and responsibilities may change or new ones may be assigned at any time with or without notice)
Requirements:
- Bachelor's degree in Computer Science, Management Information Systems, Cybersecurity, Information Technology, or a related field; or equivalent combination of education and experience.
- Minimum of 5 years of progressive experience in application security, product security, security engineering, software engineering, cloud security, or a related cybersecurity discipline.
- Demonstrated mastery of threat modeling, secure architecture, code review, application and API security, vulnerability management, cloud-native security, container security, and security automation.
- Proven experience designing or materially influencing large-scale platforms, distributed systems, cloud environments, developer platforms, or security engineering capabilities.
- Advanced software engineering capability in one or more production languages and a strong record of designing maintainable tooling, platforms, or controls.
- Ability to define strategy and technical standards while remaining sufficiently hands-on to evaluate designs, review critical code, guide prototypes, and resolve difficult engineering problems.
- Exceptional systems thinking and technical judgment, including the ability to make defensible decisions when data is incomplete and tradeoffs span security, reliability, delivery, cost, and customer impact.
- Executive-level written and verbal communication skills, with the ability to frame complex risk, build alignment, and influence decisions across organizational boundaries.
- Demonstrated leadership through influence, including mentoring senior engineers, resolving conflict, creating clarity in ambiguity, and sustaining momentum across long-running initiatives. High integrity, sound discretion, organizational awareness, and a consistent record of taking accountability for enterprise outcomes.
Skills / Certification / Licensing:
- Recognized enterprise authority who integrates deep expertise across software, architecture, cloud, data, identity, automation, and emerging technology.
- Defines strategic problems, creates direction, and operates with broad organizational trust and accountability.
- Resolves novel, high-consequence, systemic problems and establishes durable enterprise solutions.
- Shapes organization-wide technology decisions, engineering standards, investment priorities, and risk outcomes.
- Influences executives and senior technical leaders, reconciles competing priorities, and creates alignment across organizational boundaries.
- Multiplies organizational capability through strategy, standards, mentorship, communities of practice, and technical stewardship. Delivers measurable enterprise risk reduction, improved developer experience, stronger technical talent, and scalable secure-by-default capabilities.
All qualified applicants will receive consideration for employment without regard to race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or other legally protected status.
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Who's Hiring



Top Industries Hiring
- Electronics & Hardware
- Technology & Software
- Retail
- Banking & Financial Services
- Manufacturing
What Employers Look For
The qualifications that appear most often in principal application engineer jobs.
- 7 or more years of hands-on software development or systems integration experience
- Deep expertise with REST or SOAP APIs, webhooks, and integration middleware platforms
- Proficiency in one or more of Java, Python, Node.js, or similar backend languages
- Experience translating technical requirements for enterprise customers or product teams
- Familiarity with cloud platforms such as AWS, Azure, or Google Cloud in integration contexts
- Bachelor's degree in computer science, software engineering, or a related technical field
Tips for Your Principal Application Engineer Job Search
Tailor your resume to integration depth
Principal application engineer roles prioritize evidence of end-to-end integration ownership, not just exposure. Call out specific APIs, middleware platforms, or SDK ecosystems you've owned, and describe the scale and downstream impact of each implementation.
Highlight cross-functional technical leadership
Hiring managers at this level want engineers who've guided product and customer teams, not just individual contributors. Document instances where you translated complex architecture decisions into actionable guidance for non-engineering stakeholders.
Apply early to roles that fit
Migrate Mate lists principal application engineer openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Filter openings by platform specialization
Many principal application engineer postings are written around a specific vendor ecosystem, such as Salesforce, MuleSoft, or SAP. Searching by platform name alongside the title surfaces the listings where your existing expertise maps most directly to the requirements.
Prepare a system design narrative
Expect at least one technical interview round where you walk through a real integration architecture you've built. Have a concise story ready that covers the problem, your design choices, tradeoffs you rejected, and how the system performed in production.
Negotiate scope alongside compensation
At the principal level, your offer conversation should address technical ownership and decision-making authority, not just pay. Clarifying which architectural decisions you'll own independently signals seniority and prevents misalignment after you start.
Principal Application Engineer Jobs: Frequently Asked Questions
Which companies are hiring the most principal application engineers?
The companies hiring the most principal application engineers right now include Oracle, Synopsys, and BAE Systems USA, with the largest share of openings in California, Texas, and Tennessee, based on current listings on Migrate Mate as of November 2026. Enterprise software vendors, cloud platform providers, and large financial services firms consistently account for the highest volume of postings at this level.
How many principal application engineer jobs are remote?
About 68% of principal application engineer openings are fully remote or hybrid as of November 2026, reflecting strong demand for senior-level technical talent regardless of geography. Roles centered on API consulting, platform integration, and customer solutions engineering tend to offer the greatest remote flexibility, while positions tied to on-site enterprise deployments or regulated industry infrastructure skew more toward in-office or hybrid arrangements.
How do you become a principal application engineer?
Start by building deep expertise in at least one integration platform or API ecosystem and accumulating hands-on experience owning end-to-end implementations. Progress from individual contributor roles to positions where you lead technical decisions, mentor junior engineers, and interface directly with customers or product stakeholders. Demonstrating that you can own complex architecture problems independently, communicate tradeoffs clearly to non-technical audiences, and drive adoption of technical solutions is what distinguishes principal-level candidates from senior ones.
Can you get hired as a principal application engineer without prior principal-level experience?
Yes, candidates coming from a senior engineer title can break into principal application engineer roles by demonstrating the scope and impact of their existing work rather than the title itself. Concrete evidence of leading cross-team integrations, making architectural decisions with limited oversight, and influencing product direction carries more weight than a matching job title. Targeting companies where the principal tier is newly established, or where the team is scaling quickly, also increases your chances.
What does the principal application engineer interview process look like?
The process typically runs across multiple rounds and combines technical depth with leadership assessment. Expect a recruiter screen, a technical phone interview covering API design or systems integration concepts, and at least one full system design session where you walk through a real architecture you've built. Many companies also include a cross-functional panel interview with product managers or customer success teams to assess how you communicate technical decisions to non-engineers, followed by a final conversation with an engineering director or VP.
Where can I find and apply to principal application engineer jobs?
You can find and apply to principal application engineer jobs on Migrate Mate, which lists current openings from across the United States. Search the listings to find roles that match your platform experience and seniority level, then apply directly to each one that fits.
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