RQ- Software Developer - Mobile - Senior

Toronto, Ontario

Contract (1+ year, with high possibility of extension)

Must have:

- Experience working with commercial grade mobile iOS and Android applications using native languages (Objective-C / Swift, Xcode or Java with Android Studio).

- React Native.

- Experience with OpenID for Verifiable Credential Issuance (OID4

VCI 1.0) and OpenID for Verifiable Presentations (OID4VP); ability to issue both SD‑JWT‑VC and ISO mdoc credentials per high‑assurance interop profiles.

- Knowledge with ISO/IEC 18013‑5 (mdoc/mDL) and 18013‑7 (online presentation); familiarity with 23220‑4 operational protocols is an asset.

- Experience with W3C verifiable credential data model, and decentralized identifiers (DIDs), X.509 certificates (RFC 5280), zero-knowledge proofs, SD-JWT, JWT, JSON-LD

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Experience with JOSE/COSE, Oauth2 JWT/JWS, ECDSA/EdDSA, ECC/RSA, TLS, PKI, device‑bound keys for holder binding (e.g., SD‑JWT+KB (key binding) and mdoc transaction signing).

- Ensure compliance with global digital identity standards and/or specifications such as W3C Verifiable Credentials, IETF, OIDF, PCTF, NIST, and eIDAS(ARF).