Senior Software Engineer, C++

Confidential; New York (NY); On-site; USD 180,000 - 260,000; Full time

Job summary

Deciml is seeking a C++ Engineer to work on the distributed systems and consensus engine at the core of a global blockchain network. You will tackle deep systems challenges, optimize peer-to-peer communication, and contribute to incentive mechanisms that drive decentralized stability and growth.

You will join a team of engineers collaborating on protocol evolution, consensus modeling, and system architecture, making direct contributions to next-generation blockchain infrastructure.

Qualifications

• 4+ years of professional software engineering experience.
• Bachelor's or Master's degree in Computer Science or equivalent.
• Deep, hands-on expertise in modern C++ (production-level experience required).
• Strong understanding of software design principles and patterns for modular, extensible systems.
• Experience contributing to or developing in blockchain, distributed ledger, or decentralized protocol environments or demonstrated passion through open-source projects, research, or personal initiatives.

Responsibilities

• Design and build critical components of the blockchain's core distributed system and consensus layer.
• Develop scalable, extensible, and secure infrastructure powering thousands of on-chain applications.
• Collaborate with engineering leadership and community contributors on architectural design and protocol evolution.
• Write clean, production-quality C++ code optimized for performance and reliability.
• Investigate and refactor performance bottlenecks across the system stack.
• Contribute to detailed technical specifications and RFCs, helping shape design standards for the engineering organization.
• Participate actively in code reviews and lead technical discussions on systems architecture and engineering best practices.

Skills

C++

Distributed systems

Code reviews

Technical communication

Blockchain interest

Education

Bachelor's or Master's in Computer Science

Job description

About the Company

A leading decentralized infrastructure company is building one of the worlds most efficient public blockchain networks designed to enable developers to create applications that feel more like using cash than crypto. The platform provides high-speed, low-cost, and energy-efficient transactions, empowering developers and institutions to launch scalable, real-world financial applications on-chain.

About the Role

As a C++ Engineer, you'll work on the distributed systems and consensus engine at the core of a global blockchain network used by developers and institutions worldwide. This role involves tackling deep systems challenges: improving performance, optimizing peer-to-peer communication, ensuring security under adversarial conditions, and shaping the incentive mechanisms that drive decentralized stability and growth.

You'll join a team of experienced engineers collaborating on protocol evolution, consensus modeling, and system architecture making direct contributions to the foundation of next-generation blockchain infrastructure.

Key Responsibilities

• Design and build critical components of the blockchains core distributed system and consensus layer.
• Develop scalable, extensible, and secure infrastructure that powers thousands of on-chain applications.
• Collaborate with engineering leadership and community contributors on architectural design and protocol evolution.
• Write clean, maintainable, production-quality C++ code optimized for performance and reliability.
• Investigate and refactor performance bottlenecks across the system stack.
• Contribute to detailed technical specifications and RFCs, helping shape design standards for the engineering organization.
• Participate actively in code reviews and lead technical discussions on systems architecture and engineering best practices.

Required Qualifications

• 4+ years of professional software engineering experience.
• Bachelors or Masters degree in Computer Science or equivalent field.
• Deep, hands-on expertise in modern C++ (production-level experience required).
• Strong understanding of software design principles and patterns for modular, extensible systems.
• Proven ability to collaborate and communicate effectively in technical discussions and design reviews.
• Experience contributing to or developing in blockchain, distributed ledger, or decentralized protocol environments (or a demonstrated passion for the field through open-source projects, research, or personal initiatives).

Bonus Skills

• Experience designing and implementing distributed systems at scale.
• Familiarity with Rust or other systems-level programming languages.
• Interest in blockchain economics, consensus algorithms, and decentralized system design.
• Contributions to open-source projects or Web3 developer communities.