Bitcoin Custody Engineer - Madagascar
JOB DESCRIPTION Bitcoin Custody Engineer Information Technology |
Ref.: DIA-2026-IT-06 |
■ Location | ■ Seniority | ■ Estimated duration | ■ Contract |
Madagascar – Remote | Expert – 10+ years | 6 months to 1 year | To be confirmed |
ABOUT THE PROJECT
Our client, an international multi-entity group, is building a security-critical, privacy-first information system on its own on-premise infrastructure: hardened mobile and desktop applications, hardware-key authentication, legally isolated data for each group entity, and self-hosted finance and AI capabilities.
The programme is delivered by a senior, multi-disciplinary team working in two-week agile sprints, with compartmentalised access and a strong culture of security by design.
WORK ARRANGEMENT
This is a remote position: you will work from home, from Madagascar. No attendance at DI-Africa's offices is required.
THE ROLE
Design and build the self-hosted corporate Bitcoin custody and payment layer: per-entity wallet coordinators, hot and cold paths, and spend policies driven by the group's approval matrix.
KEY RESPONSIBILITIES
● Build per-entity wallet coordinators on a self-hosted Bitcoin Core node.
● Implement online and offline transaction initiation using PSBT, descriptors and Taproot.
● Design hot / cold custody architecture with limits, air-gapped and HSM-backed cold paths.
● Translate the approval matrix (RACI) into enforceable spend policies.
● Implement incoming-funds controls and test on signet / regtest environments.
TECHNICAL ENVIRONMENT
● Bitcoin Core RPC, descriptor / PSBT toolchains.
● Go or Rust (wallet coordinator), Bash/Python.
● YubiKey, Coldcard, air-gapped signing, HSM.
PROFILE
Location | ● Based in Madagascar, working remotely from home. |
Experience | ● Expert – 10+ years of relevant professional experience. |
Required skills | ● Self-hosted Bitcoin custody. ● Corporate hot / cold wallet architecture. ● Separation of FIDO2 authentication keys from coin keys. ● Policy-based spending. ● Signet / regtest. |
Nice to have | ● PKCS#11 / HSM integration. ● Shamir secret-sharing backups. |
Languages | ● Professional English required; French is a plus. |
Ways of working | ● Work independently on software development tasks. ● Write clean, straightforward, efficient code that meets acceptance criteria and specifications. ● Cover code with unit, property and integration tests where applicable. ● Write code documentation. ● Willingness to handle hardware: YubiKeys, HSMs, air-gapped machines, phone flashing. ● Comfortable working with compartmentalised access. ● Proactive, requiring minimal supervision or mentoring. ● Proactive in identifying potential problems and implementing solutions. ● Efficient time management and respect of deadlines. ● Practical experience with agile software development methods. |
HR Consulting · www.di-africa.com
Confidential – For recruitment purposes only
About DI-Africa
DI-Africa supports industrial, mining, oil & gas and services groups with their hiring across Africa: Employer of Record (EOR), recruitment & sourcing, payroll & compliance, immigration & work permits, international mobility, health insurance.
Our recruitment process
- Online application — acknowledgement within 48 hours.
- DI-Africa interview — conversation with a recruitment consultant.
- Client interview — short-list presented to the client.
- Offer & onboarding — we support you until your first day.