Forward Deployed Engineer, Identity, UCP & Wallets (TypeScript)

Forward Deployed Engineer, Identity, UCP & Wallets (TypeScript)

Location: Costa Mesa, California (Remote)

Role Overview

The mission is to carry a verified loyalty identity through an agent handshake on a universal checkout platform and on a protocol-agnostic rail. This role will also build the wallet-held Verifiable Credential proof of concept. The position involves implementing platform components, building protocol-agnostic rails, developing a Verifiable Credential proof of concept, and running a loyalty-fraud test suite.

Key Responsibilities

• Implement the universal checkout platform side, including a namespaced signal with a loyalty block on a platform agent, and a mock merchant for verification.

• Build the protocol-agnostic rail, including a header contract, an edge verifier with caching and spoof-header stripping, and merchant middleware.

• Develop the Verifiable Credential proof of concept, including issuing a credential, presenting it via specified protocols, and verifying it at the merchant.

• Implement and run a loyalty-fraud test suite on both rails.

• Write the merchant integration guide for the rail and the universal checkout platform path, and build the demo storefront beats.

• Required Qualifications

• 5+ years of experience with TypeScript/Node (Node 22, Next.js or similar), with strong HTTP fundamentals.

• Experience in identity engineering, including OAuth 2.0 Authorization Code + PKCE, OIDC, JWT/JWS (ES256, EdDSA), and JWKS rotation.

• Hands-on experience with Verifiable Credentials, including W3C VC 2.0 data model, OID4VCI/OID4VP, and SD-JWT VC.

• Familiarity with DID methods (did:web, did:key) and at least one wallet SDK.

• Experience with edge development, such as Cloudflare Workers (or equivalent) with KV/Durable Objects, header verification, and rate limiting.

• Ability to read protocol specifications precisely and deliver from acceptance criteria without supervision.

• Preferred Qualifications

• Experience with BBS+ / zero-knowledge predicate tooling.

• Knowledge of Google Universal Checkout Platform or Merchant Center integrations.

• Background in loyalty-programme or promotions systems.

• Sufficient Python knowledge to pair on blueprint binding.

• Experience in e-commerce fraud or bot-management.

• Deliverables

• Universal checkout platform signal schema and platform-agent reference.

• Mock universal checkout platform merchant with loyalty tiers.

• Header contract, edge verifier, and middleware SDK.

• VC issuer/wallet/verifier proof of concept.

• Fraud test suite.

• Integration guides.

• Demo beats.

• Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

• Benefits

• Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.

• Equal Opportunity Employer statement: Everforth Apex is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.