{"id":4173339,"url":"https://alion.io/job/ingenosya-crypto-engineer","title":"CRYPTO ENGINEER","company":{"id":4538383,"name":"Ingenosya","domain":"ingenosya.com","url":"https://alion.io/company/ingenosya","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Web3","role_family":"Web3","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Antananarivo, Madagascar"],"countries":["MG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Bitcoin","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"Agile","optional":true}],"status":"live","first_seen_at":"2026-11-12T13:39:27Z","employer_posted_date":null,"last_verified_at":"2026-11-12T13:39:27Z","board_verified":false,"closed_at":null,"days_open":1,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":1},"description":"- Concevoir et mettre en œuvre des solutions de gestion sécurisée des actifs Bitcoin en environnement auto-hébergé (Self-hosted Bitcoin Custody) ;\n\n- Développer et maintenir les mécanismes de gestion des portefeuilles Bitcoin, en ligne et hors ligne ;\n\n- Mettre en place des mécanismes de coordination des portefeuilles par entité (Per-tenant Coordinators) ;\n\n- Assurer l'intégration et l'exploitation de Bitcoin Core RPC ainsi que des outils PSBT et des descripteurs Bitcoin ;\n\n- Concevoir et appliquer les politiques de gestion des transactions et de validation des dépenses (Spend Policies) ;\n\n- Mettre en œuvre les mécanismes de gestion des plafonds de transactions pour les portefeuilles connectés (Hot Caps) ;\n\n- Participer à la sécurisation des opérations de signature à l'aide de dispositifs matériels tels que YubiKey, Coldcard et HSM ;\n\n- Assurer la séparation des mécanismes d'authentification FIDO2 et des clés cryptographiques utilisées pour les transactions ;\n\n- Développer et tester les mécanismes de gestion des flux entrants et de contrôle des transactions ;\n\n- Réaliser les tests et validations dans des environnements Signet et Regtest ;\n\n- Assurer la qualité du code, les tests, la documentation technique et le respect des exigences de sécurité.\nProfil recherché- Plus de 10 ans d'expérience en développement logiciel, cryptographie ou ingénierie Blockchain ;\n\n- Bonne maîtrise de Bitcoin Core RPC et des outils de gestion des transactions PSBT ;\n\n- Bonne connaissance des descripteurs Bitcoin et de Taproot ;\n\n- Expérience en gestion sécurisée de portefeuilles Bitcoin auto-hébergés, avec des mécanismes de stockage à chaud et à froid (Hot/Cold Wallets) ;\n\n- Maîtrise des mécanismes de signature et des politiques de validation des transactions ;\n\n- Bonne connaissance de Go ou Rust, ainsi que des scripts Bash/Python ;\n\n- Expérience avec les dispositifs matériels de sécurité tels que YubiKey, Coldcard et HSM ;\n\n- Maîtrise professionnelle de l'anglais. 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Docs: https://alion.io/developers"}}