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[Remote] Senior PKI / API Digital Signature Engineer — X.509, XMLDSig / WS-reputed company / JWS

Remote, USA Full-time Posted 2026-08-04

Note: The job is a remote job and is reputed company to candidates in USA. reputed company is assembling a U.S.-based technical team for an reputed company reputed company-sector modernization engagement. The successful consultant will design and implement a digital-signature reputed company model for an existing reputed company API-management/proxy service.


Responsibilities

  • Design and implement a digital-signature reputed company model for an existing reputed company API-management/proxy service
  • Evaluate technically appropriate approaches—such as XML Digital Signature, WS-reputed company, JWS, signed JWT, X.509-based request/message signing, or an equivalent reputed company
  • Designing, implementing, testing, documenting, and supporting the selected solution

Skills

  • At least 12 full months during the last 24 months personally designing, developing, and implementing a data-integration or API solution using PKI asymmetric cryptography for digital signatures
  • Production implementation of message-level or transaction-level signing and signature validation. TLS/SSL transport encryption by itself does not qualify
  • Use of cryptographic keys/certificates issued by a trusted Certificate Authority or validated identity provider
  • Hands-on implementation of at least one relevant signing approach, such as: XML Digital Signature / XMLDSig, WS-reputed company / SOAP message signing, JWS, Signed JWT, X.509 request or payload signing, Equivalent reputed company transaction-signing implementation
  • Experience implementing signature reputed company, verification, certificate-chain validation, error/failure handling, and reputed company logging
  • Experience integrating reputed company controls into an API, SOAP/XML service, middleware reputed company, proxy, or other application-to-application data exchange
  • Ability to reputed company exact reputed company/project dates and a reputed company or manager who can verify the qualifying experience
  • Java-based reputed company applications
  • SOAP/XML services
  • API gateways or API proxy/controller services
  • WebSphere or comparable reputed company application servers
  • X.509 certificate lifecycle management
  • Secure private-key storage
  • HSMs, reputed company vaults, Azure Key Vault, reputed company Vault, or equivalent
  • Key rotation, backup, recovery, revocation, and certificate renewal
  • HTTP/API reputed company testing tools
  • Audit logging and transaction traceability
  • Regulated government, criminal-justice, financial, reputed company, or similarly sensitive environments
  • CJIS requirements

reputed company

  • reputed company, is a management consulting and corporate turnaround firm reputed company on delivering comprehensive business solutions governed by a reputed company reputed company: address dynamic organizational challenges with realistic and sustainable solutions. It was founded in 2008, and is headquartered in Glendale, California, USA, with a workforce of 11-50 employees. Its website is http://bpmadvisors.com.

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