About Company
We are a collective of seasoned media buying dons, data-scientist consiglieri, and creative capos. Our mission: maximize ROI through precision performance marketing and on-chain execution. From viral memecoin launches to complex DeFi & iGaming ecosystems, we turn ad spend into an offer the market cannot refuse.
Our performance models—CPC, CPA, or ROAS—are tailored to your empire’s growth, ensuring every dollar becomes an investment in absolute market domination. We operate in the shadows, so your success can shine in the light.
Job Description
Summary
Target Mafia is a performance-marketing and development syndicate operating at the intersection of Crypto, DeFi, and iGaming. We are hiring a Senior Smart Contract Developer to architect, develop, and optimize smart contracts (Solidity / EVM, optionally Rust/Solana) for gambling protocols, payment routing, tokenomics, and liquidity provision. This is a key role with direct revenue impact, remote-first, with all payments made in crypto.
Duties / Responsibilities
- Design and implement protocol architectures (custody-less deposits, payout logic, anti-fraud, tokenomics functions).
- Write, test, and deploy smart contracts (Solidity; Rust/Solana experience is a big plus).
- Integrate VRF/oracle randomness providers into contracts.
- Conduct unit, integration, fuzz, and property-based testing; prepare code for audits.
- Perform gas optimizations and formal verification of critical invariants.
- Collaborate with frontend engineers (ABI/events/interfaces) and payment gateway integrations.
- Configure CI/CD pipelines, monitor on-chain metrics, and respond to incidents.
Required Skills
- Deep knowledge of Solidity/EVM internals (storage, memory, stack, edge-cases).
- Understanding of OWASP/SWC vulnerabilities (reentrancy, oracle manipulation, overflow/underflow, signature replay, etc).
- Experience with tokenomics design (vesting, emissions, fee models, rev-share).
- Skilled in gas optimizations & profiling (Forge/Anvil/Foundry, Hardhat).
- Experience building with on-chain randomness (VRF), oracles (Chainlink or others).
Education and Experience
- 3–5+ years of software development, including 2+ years in smart contract engineering.
- At least 2 deployed on-chain projects (contract addresses required).
- Audit, bounty, or CTF participation is a plus.
- Strong GitHub/GitLab portfolio with clean, tested code.
- English: Upper-Intermediate+ required.
Additional Requirements or Expectations
- Format: Full-time or contract-to-hire, remote. EU timezone overlap (2–4h).
- Onboarding & payments exclusively in crypto. Submission of a valid wallet address is mandatory.
- Confidentiality/NDA required.
- Paid technical test may be assigned.
Application Requirements
When applying, include:
- Resume + short cover letter (5–7 sentences).
- GitHub/GitLab profile.
- Contract addresses of deployed work (Etherscan/Polygonscan/BSCScan).
- Primary wallet address for payments (ETH/SOL/BSC) — mandatory for onboarding.
- (Optional) links to audits, bug bounties, or CTF results.
Skills
- Communications Skills
- Crypto Payment Management
- Cryptography
- Data Structures
- Logical Thinking
- Problem Solving
- Protocol Analysis
- Quality Assurance
- Rust
- Smart Contract Audit
- Smart Contract Development
- Solidity
- Token Engineering
- Tokenomics
