Senior Software Engineer, Full-Stack - Bitcoin Team
BitGo, a pioneering digital asset infrastructure provider, caters exclusively to institutional clients. They focus on offering a wide range of digital asset solutions, from custody and wallets to staking, trading, financing, and settlement services, operated from regulated cold storage. With a global presence through multiple Trust companies, BitGo serves over 1,500 institutional clients in 50 countries, including major brands, cryptocurrency exchanges, and platforms. They secure a sizable percentage of on-chain Bitcoin transactions and are the largest independent digital asset custodian.
The company is seeking a skilled senior full-stack software engineer to join their Bitcoin Team. The ideal candidate will be involved in enhancing multi-signature Bitcoin wallets with cutting-edge features on a large scale, ensuring the systems supporting Bitcoin products are functionally sound and performant. This role involves improving backend software integration with the Bitcoin blockchain, as well as contributing Bitcoin expertise across the engineering team. Furthermore, there is a focus on exposing and documenting functionality to UI, third-party developers, and internal/external tooling.
The desired candidate will have at least 5 years of experience in full-stack software development and exhibit a thoughtful, minimalist API design approach. Proficiency in git and Github-based code review, along with a passion for implementing advanced Bitcoin features at scale, are essential. Experience in testing rigorously and efficient debugging practices are crucial, as is the ability to operate independently in a dynamic environment.
Preferred qualifications include a strong grasp of fundamental Bitcoin blockchain mechanics, proficiency in Node.JS, JavaScript, and Typescript, a familiarity with emerging Bitcoin technologies like Taproot and Lightning, and a track record of contributing to Bitcoin-related open source projects. Experience with containerized applications in Kubernetes and background in server-side Java application programming are advantageous.
At BitGo, employees are encouraged to embody values such as open communication, collaboration, accountability, and craftsmanship while supporting the mission of fostering trust in digital assets. The company offers competitive compensation, stock options, health insurance, 401k matching, paid parental leave, generous vacation time, commuter benefits, catered meals, and a stimulating startup environment where innovation and teamwork are celebrated. Employees can expect a base salary ranging between $165,000 - $210,000, along with equity, a performance bonus, and additional benefits dependent on location and role level. Join BitGo and be part of the transformational journey in the financial markets driven by cryptocurrencies.
Senior Blockchain Engineer
Protocol Core: Development and optimization of L2-settlement logic on Solidity/Yul.
Bridge Security: Designing secure cross-chain gateways with protection against double spending and reorgs.
Node Infrastructure: Optimizing the interaction of node validators with the EVM stack.
Gas Engineering: Extreme cost reduction for publishing data in L1 (Deneb/Cancun-ready).
Requirements:
Deep knowledge of Solidity (0.8.20+) and Assembly (Yul).
Experience working with Foundry (Fuzzing/Invariants) and understanding the architecture of OP Stack or Arbitrum Orbit.
Skills of working with indexers (The Graph/Envio) and the RPC layer.
Social media manager
Senior Blockchain Engineer
DApp & Smart Contract Developer (Vesting Platform)
This role is ideal for someone who thrives in fast-moving environments, values clean and secure code, and understands the nuances of blockchain-based application architecture.
Responsibilities
Diagnose and resolve issues in vesting smart contracts and their front-end integrations.
Implement new features and system enhancements to improve UX and overall platform performance.
Maintain smooth interaction between the web interface and deployed smart contracts.
Conduct testing, audits, and deployments across testnet and mainnet environments.
Optimize contract logic for performance, security, and gas efficiency.
Collaborate with our engineering team to identify pain points and deliver stable, secure solutions.
Requirements
Proven experience building full-stack decentralized applications.
Strong proficiency in Solidity, JavaScript/TypeScript, and modern frameworks (Angular, React, or Vue).
Hands-on experience with Hardhat or Foundry for smart contract development and testing.
Familiarity with Ethers.js or Web3.js for blockchain interaction layers.
Solid understanding of Ethereum, Polygon, or other EVM-compatible chains.
Experience integrating wallets such as MetaMask and managing on-chain/off-chain data flows.
Strong debugging skills, attention to detail, and a security-first mindset.
Nice to Have
Experience with smart contract security audits and gas optimization techniques.
Knowledge of Node.js-based backend services or API integration layers.
Previous experience with vesting, staking, or token distribution mechanisms.
Project Scope
This role supports a short-to-mid-term initiative focused on stabilizing and enhancing an existing crypto vesting platform. High-performing developers may have opportunities for ongoing collaboration across additional blockchain and product engineering projects.
Hiring Process
Technical Assessment - Selected candidates will complete a short, clearly scoped technical exercises designed solely to evaluate coding approach and smart contract knowledge.
CTO interview - A final discussion to evaluate technical reasoning, architectural thinking, and team fit. Successful candidates may receive an offer through Contra following this conversation.
Senior Blockchain Developer - Ethereum/PulseChain - GAM3S.GG
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools