Develop and maintain privacy-focused protocol and wallet infrastructure in modern C++. Responsibilities include implementing transaction, consensus, and P2P components; integrating cryptography; supporting cross-platform libraries and CLIs; writing tests and fuzzers; optimizing performance; addressing side-channel risks; and documenting auditable designs. The role requires collaboration with cryptographers and protocol researchers on secure, reliable blockchain-related systems.
As a Senior C++ Developer at Ledgeroom, you'll work on the core protocol and wallet infrastructure in modern C++ (C++17/20), with a focus on cryptographic correctness, memory safety, and cross-platform reliability. You'll collaborate closely with our cryptographers and protocol researchers to turn papers into hardened, auditable code.
What You'll Do:
- Design and implement core protocol components (transaction construction, consensus rules, P2P networking) in modern C++.
- Integrate and maintain cryptographic primitives (elliptic curve operations, zero-knowledge proof systems, hashing) using well-vetted libraries.
- Build and maintain Ledgeroom's wallet libraries and CLIs across Linux, macOS, and Windows.
- Write unit, integration, and fuzz tests; participate in code review and security audits.
- Profile and optimize hot paths (proof generation/verification, block validation) without sacrificing clarity or safety.
- Contribute to threat modeling and help eliminate side-channel and timing leaks.
- Document APIs and design decisions for auditors and external contributors.
What We're Looking For:
- 4+ years of professional C++ experience (C++14 minimum; C++17/20 preferred).
- Strong grasp of memory safety, RAII, and undefined behavior pitfalls; familiarity with sanitizers (ASan/UBSan/TSan) and fuzzing (libFuzzer/AFL).
- Experience with multi-threaded and networked systems.
- Solid understanding of cryptographic engineering practices (constant-time code, secure key handling) — you don't need to be a cryptographer, but you must respect the discipline.
- Comfort with CMake, Git, and CI/CD pipelines.
- Ability to read and reason about protocol specifications and academic papers.
- Strong written communication skills for a remote, async team.
Nice to Have:
- Prior work on blockchain, consensus, or P2P systems.
- Experience with libsodium, OpenSSL, or secp256k1-style libraries.
- Familiarity with zero-knowledge proof systems (Groth16, Bulletproofs) or ring signatures.
- Rust or Go experience (we have some cross-language tooling).
- Contributions to open-source security-sensitive projects.
What We Offer:
- Competitive salary (range: $140k–$200k USD, depending on experience) plus token allocation.
- Fully remote, flexible hours, async-first culture.
- Budget for conferences, courses, and hardware.
- Meaningful work on privacy infrastructure that matters.
How to Apply:
Send your CV, GitHub profile, and a short note about a piece of C++ code you're proud of (and why) to [email protected]. We especially welcome candidates who can point to prior security-sensitive or open-source work.
Similar Jobs
Artificial Intelligence • Fintech • Insurance • Marketing Tech • Software • Analytics
Investigates and processes commercial insurance claims, determines policy coverage, assesses damages and losses, establishes reserves, negotiates settlements, documents claim activity, and identifies potential fraud or subrogation. The role involves frequent communication with insureds, claimants, agents, and internal teams, along with coordination across appraisal, subrogation, and investigative units. It is hybrid, with office attendance twice monthly for eligible employees near designated locations.
Fintech • Information Technology • Insurance • Financial Services • Big Data Analytics
Leads data strategy for MetLife’s Group Benefits business by connecting business and Data & Analytics teams, establishing shared definitions, resolving ownership gaps, and improving governance and quality. The role leads Data Councils, supports Agile Release Trains, removes data-related blockers, and strengthens data foundations for decision-making, service delivery, analytics, and AI initiatives.
Top Skills:
Agile Release Trains (Arts)AIAnalyticsData GovernanceData Quality
Fintech • Information Technology • Insurance • Financial Services • Big Data Analytics
Performs daily accounting functions supporting incoming and outgoing funds, including wire processing, disbursements, misdirected money, suspense reconciliations, and cash reconciliations. Analyzes financial transactions, maintains general ledger accounts, investigates discrepancies, resolves reconciliation exceptions, and improves accounting processes, controls, and compliance. Partners collaboratively across teams to ensure accurate financial records and reliable customer and business fund operations.
What you need to know about the Charlotte Tech Scene
Ranked among the hottest tech cities in 2024 by CompTIA, Charlotte is quickly cementing its place as a major U.S. tech hub. Home to more than 90,000 tech workers, the city’s ecosystem is primed for continued growth, fueled by billions in annual funding from heavyweights like Microsoft and RevTech Labs, which has created thousands of fintech jobs and made the city a go-to for tech pros looking for their next big opportunity.
Key Facts About Charlotte Tech
- Number of Tech Workers: 90,859; 6.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lowe’s, Bank of America, TIAA, Microsoft, Honeywell
- Key Industries: Fintech, artificial intelligence, cybersecurity, cloud computing, e-commerce
- Funding Landscape: $3.1 billion in venture capital funding in 2024 (CED)
- Notable Investors: Microsoft, Google, Falfurrias Management Partners, RevTech Labs Foundation
- Research Centers and Universities: University of North Carolina at Charlotte, Northeastern University, North Carolina Research Campus
