Backend Software Engineer (PKI & Cybersecurity)

Location United States Start and end date 19 Oct 2026 – 25 Oct 2027 Indicative hourly rate $80 – 85/hr Respond by 20 Oct 2026 Skills Cyber security, .Net Core, Openshift, X.509, Public Key Infrastructure, software\-engineering, Kubernetes, microservices, MongoDB, Security Engineering, Application programming interface, Certificate Management, Network Architecture, C\-sharpCyber security, .Net Core, Openshift, X.509, Public Key Infrastructure, software\-engineering, Kubernetes, microservices, MongoDB, Security Engineering, Application programming interface, Certificate Management, Network Architecture, C\-sharp View all ### **Backend Software Engineer III (PKI \& Cybersecurity)** ### **Company introduction** We are seeking an experienced Backend Software Engineer III with a strong background in Cybersecurity, Public Key Infrastructure (PKI), and Secure API Development. This role will support the design, development, and maintenance of critical cryptographic services that secure connected vehicle ecosystems. ### **Role summary / purpose** The ideal candidate has extensive experience building secure backend applications, implementing PKI solutions, developing REST APIs, and working with cloud\-native technologies. ### **Key responsibilities** * Design, develop, and maintain secure backend applications, APIs, and microservices. * Build and support PKI and key management solutions including certificate issuance, lifecycle management, revocation, and encryption services. * Develop integrations with Hardware Security Modules (HSMs) using PKCS\#11\. * Implement security controls using OAuth, mTLS, and encryption technologies. * Design and support RESTful services related to: + Certificate Management + CRL / OCSP Services + ACME Integrations + Software Signing + Key Rotation + Encryption / Decryption Services * Deploy and support applications in cloud and on\-premises Kubernetes environments. * Participate in architecture design, code reviews, testing, security assessments, and CI/CD initiatives. * Collaborate with product owners, architects, and business stakeholders to deliver secure solutions. * Monitor application performance, reliability, security, and compliance. ### **Requirements – education \& experience** * 6\+ years of IT experience * 4\+ years of hands\-on software engineering experience * Strong experience with object\-oriented programming and secure coding practices * Experience building and supporting customer\-facing applications * Bachelor's degree in Computer Science, Engineering, or related field ### **Required skills** * C\# / .NET Core * Backend API \& Microservices Development * PostgreSQL * Google Cloud Platform (GCP) * Cloud Infrastructure * Software Development Lifecycle (SDLC) * Agile Methodologies * Application Testing \& Documentation * Cybersecurity Engineering * Bouncy Castle or similar cryptographic libraries * Public Key Infrastructure (PKI) * X.509 Certificates * RSA, ECC, and AES Cryptography * Certificate Lifecycle Management * Hardware Security Modules (HSMs) * Secure API Design ### **Nice\-to\-have / preferred skills** * Kubernetes or OpenShift * Redis, MongoDB * Production PKI System Experience * NIST, OWASP, ISO Security Standards * CI/CD Pipeline Experience * Technical Architecture Experience * Automotive or Connected Vehicle Experience * Knowledge of In\-Vehicle Network Architecture ### **Employment details – type, location, hours** **Location:** Dearborn, MI (Hybrid \- 4 Days Onsite / Week) **Employment Type:** Contract **Requirements** ---------------- ### **Skills** * Cyber security — Intermediate * .Net Core — Intermediate * Openshift — Intermediate * X.509 — Intermediate * Public Key Infrastructure — Intermediate * software\-engineering — Intermediate * Kubernetes — Intermediate * microservices — Intermediate * MongoDB — Intermediate * Security Engineering — Intermediate * Application programming interface — Intermediate * Certificate Management — Intermediate * Network Architecture — Intermediate * C\-sharp — Intermediate ### **Languages** * English — Professional working proficiency