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Adel KalecheAK

Adel Kaleche

Développeur Back-End

600 €/jour
Sète, FR
3-7 ans

Délai de réponse moyen : 1h

À propos de Adel

Rust engineer focused on the seam between LLM serving and on-chain payment protocols. I build small, spec-pinned cores — wire-format-correct, benchmarked under release profile, golden-tested against the reference implementation — and the production glue around them.

Current work — x402-batch-settlement (Rust): the first Rust implementation of the x402 V2 batch-settlement scheme. A cryptographic core (EIP-712 domain, channelId, voucher digest, secp256k1 recovery) byte-exact against viem, pinned by 5 golden tests to authoritative vectors. The full economic loop — deposit → off-chain vouchers → claim → settle → recipient — is demonstrated end-to-end on Base Sepolia, single process, with on-chain receipts as the source of truth. Steady-state voucher overhead: p99 ≈ 0.39 ms (release, target-cpu=native), ~13× under the 5 ms target, with no per-payer trust window. Two upstream contributions opened: a spec-feedback PR to x402-foundation/x402 and a batch-settlement proposal to x402-rs.

Around it — the api router: an OpenAI-compatible Rust router (axum / tokio / reqwest) that gates each LLM request behind an x402 payment, forwards to an upstream provider, and reports per-stage timing in microseconds. The harness used to measure three payment modes (sync settle, async settle, batch-settlement) and document the latency / economic-risk frontier honestly.

Background spans Rust, Python, TypeScript and SQL. Comfortable owning the path from protocol spec to production-grade systems code.

Open to remote-friendly engineering roles and collaboration around payment protocols, agentic infrastructure and LLM serving.
  • Français

    Bilingue ou natif

  • Anglais

    Capacité professionnelle complète

En télétravail uniquement
Travaille majoritairement à distance

Expériences

  • Kaleche Dev
    Founder & Principal Engineer
    juin 2024 - Aujourd'hui (2 ans)
    Sete, France
    Fondateur de Kaleche Dev, structure de freelance Rust senior. Je conçois et livre des services backend de production (tokio, axum, hyper, reqwest, sqlx), des passerelles API gated par paiement (OpenAI-compatibles), des flots de signature EVM/EIP-712 (alloy/ethers-rs) et du travail empirique de performance (p50/p95/p99, méthode reproductible). Séparation crate/binaire stricte, golden tests, decision logs. Rust, Python, TypeScript, SQL.
    Rust Ethereum Tokio EVM EIP-712
  • Kaleche Dev
    Contribution Open Source & Standards
    mai 2026 - Aujourd'hui (1 mois)
    Rust x402 V2 batch-settlement implementation. EIP-712 byte-exact against the canonical TypeScript signing library (5 golden tests). Demonstrated the full escrow → recipient loop end-to-end on Base Sepolia (single-process, on-chain delta = reported settledAmount to the raw unit). Found and fixed three lifecycle bugs via the hosted facilitator's own error codes; settled amount per loop +7× after the third fix. Contributions to x402-foundation/x402 (#2323/#2325) and x402-rs (#90/#92). github.com/Adelagric/x402-batch-settlement.
  • Lpa la Condamine
    Professeur de mathématiques physique chimie informatique
    septembre 2024 - Aujourd'hui (1 an et 9 mois)
    Pézenas, France
    Enseignement des mathématiques, de la physique, de la chimie et de l'informatique en lycée professionnel agricole. Préparation aux examens, gestion de classe, suivi pédagogique individualisé, conception des séquences et des évaluations. CDD sur site à Pézenas, Occitanie.

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Formations

  • Certificat Vérifié pour Probability
    edX
    Certificat Vérifié pour Probability
  • Engineer's degree
    Université des Sciences et de la Technologie 'Houari Boumediène'
    Engineer's degree

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