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Cosmos Sdk Developer Jobs in New York (NOW HIRING)

PTR Global

Blockchain Developer

Woodbridge, NJ · On-site

Architect and develop a custom blockchain application using Go (Golang), Cosmos SDK, and CometBFT ... Cryptographic Engineering * Implement and optimize privacy-preserving cryptographic primitives ...

Cosmos Labs

General application

New York, NY · On-site +1

The Cosmos SDK and IBC protocol are the foundation for chains managing tens of billions in value ... Play a critical role in building our culture, our engineering practices, the products we ship, and ...

Wells Fargo

Senior Specialty Protocol Engineer

Iselin, NJ · On-site

$106K - $145K/yr

Architect and build a custom blockchain application using Go , Cosmos SDK , and CometBFT ... Engineer custom ABCI++ extensions (specificallyPrepareProposaland Vote Extensions) to implement an ...

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Cosmos Sdk Developer information

What is a Cosmos SDK developer?

A Cosmos SDK Developer is a software engineer who specializes in building blockchain applications using the Cosmos SDK, a framework that allows developers to create custom, interoperable blockchains. These developers work on creating decentralized applications (dApps), modules, and blockchain networks that can easily connect and communicate with other blockchains in the Cosmos ecosystem. They often use programming languages like Go and are familiar with blockchain concepts such as consensus algorithms, governance, and token economics. Their role is crucial in expanding the Cosmos network and ensuring secure, scalable, and efficient blockchain solutions.

What are some typical challenges Cosmos SDK developers face when integrating custom modules into a blockchain application?

Cosmos SDK Developers often encounter challenges such as ensuring module compatibility with existing components, maintaining security while extending chain functionality, and handling inter-module communication. Debugging and testing new modules can be complex, especially when managing state changes and message passing. Effective collaboration with other developers and clear documentation are crucial to successfully integrating custom modules without introducing vulnerabilities or performance issues.

What are the key skills and qualifications needed to thrive as a Cosmos SDK developer, and why are they important?

To thrive as a Cosmos SDK Developer, you need strong proficiency in Go programming, blockchain architecture, and experience with the Cosmos SDK framework, often supported by a degree in computer science or related fields. Familiarity with tools like Tendermint Core, REST APIs, and version control systems such as Git is essential, and certifications in blockchain technologies can be beneficial. Problem-solving skills, attention to detail, and effective communication enable collaboration and the ability to address complex technical challenges. These skills ensure secure, scalable, and efficient development of decentralized applications on the Cosmos network.

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Cosmos Sdk Developer jobs near you
Infographic showing various Cosmos Sdk Developer job openings in New York as of August 2026, with employment types broken down into 83% Full Time, and 17% Contract. Highlights an 83% In-person, and 17% Remote job distribution.

Blockchain Developer

PTR Global

Woodbridge, NJ • On-site

Other

Re-posted 10 days ago

Job description

Position: Blockchain / Protocol Engineer
Location: Iselin NJ
Duration: Contract
Job ID: 177733
Only W2
Are you passionate about blockchain protocols, distributed systems, and applied cryptography? We are seeking a Lead Protocol Engineer to help build a cutting-edge Digital Asset Platform focused on solving one of the biggest challenges in institutional finance-delivering regulatory compliance while preserving transaction confidentiality.
This role sits at the intersection of cryptography, blockchain infrastructure, and high-performance distributed systems, offering the opportunity to design and develop core protocol components from the ground up.
Key Responsibilities
Core Protocol Development
  • Architect and develop a custom blockchain application using Go (Golang), Cosmos SDK, and CometBFT (Tendermint).
  • Design scalable and secure protocol components for institutional-grade digital asset settlement.
Cryptographic Engineering
  • Implement and optimize privacy-preserving cryptographic primitives including:
  • Pedersen Commitments
  • Bulletproofs (Range Proofs)
  • Ensure cryptographic solutions operate without requiring a trusted setup.
Consensus & Distributed Systems
  • Develop custom ABCI++ extensions including:
  • Prepare Proposal
  • Vote Extensions
  • Build and support an on-chain Multi-Party Computation (MPC) mixing network.
State Machine Design
  • Design and maintain custom KVStore state machines.
  • Manage homomorphically encrypted balances using Elliptic Curve cryptography rather than traditional plaintext accounting models.
Performance Optimization
  • Optimize cryptographic operations such as:
  • Scalar multiplication
  • Point addition
  • Improve throughput, latency, and scalability across distributed environments.
Regulatory Auditing Infrastructure
  • Develop secure off-chain query layers.
  • Implement \"view key\" mechanisms enabling permissioned regulatory oversight while maintaining privacy.
Required Qualifications:
  • 5+ years of Software Engineering experience.
  • 3+ years of backend or systems programming experience.
  • Expert-level proficiency in Go (Golang).
  • 1+ year of experience building reliable distributed systems.

Experience with:
  • BFT Consensus Algorithms
  • P2P Networking
  • State Replication
  • 6+ months of hands-on experience with Elliptic Curve Cryptography (ECC).
  • Strong understanding of distributed architecture, performance optimization, and systems design.

Ideal Candidate:
  • Deep interest in blockchain protocol development.
  • Experience building low-level distributed systems.
  • Strong understanding of applied cryptography and privacy-preserving technologies.
  • Ability to translate mathematical concepts into production-grade software.
  • Comfortable operating in highly complex, research-driven engineering environments.

Preferred Experience:
  • Cosmos SDK
  • CometBFT / Tendermint
  • Blockchain protocol engineering
  • MPC (Multi-Party Computation)
  • Zero-Knowledge Proofs (ZKP)
  • Cryptographic protocol implementation
  • Financial services, digital assets, or fintech platforms
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