Experienced principal blockchain engineer with payment and exchange building experience

Travoom; Santa Monica (CA); On-site; USD 120,000 - 150,000; Full time

Job summary

Travoom is looking for an Experienced Principal Blockchain Engineer in Santa Monica to develop a free social network and messaging platform focused on cryptocurrency for in-match betting. The ideal candidate will have over 5 years of blockchain development experience and expertise in smart contract programming and crypto payment systems.

The role involves building secure decentralized applications, integrating crypto wallets, and ensuring high transaction efficiency. Join us to help shape the future of sports experiences!

Qualifications

• 5+ years of experience in blockchain development, ideally with cryptocurrency payment systems.
• Proven track record of building large-scale blockchain systems.
• Strong problem-solving and debugging skills.

Responsibilities

• Build decentralized applications and smart contracts on various blockchain platforms.
• Integrate cryptocurrency wallets and manage secure payments on the platform.
• Collaborate with cross-functional teams to ensure smooth product launches.

Skills

Blockchain Development Experience

Smart Contract Development

Cryptocurrency Wallet and Payment Integration

Security and Cryptography

Scalability Solutions

Experience with APIs and Backend Integration

Education

Degree in Computer Science or related field

Blockchain certifications

Job description

Experienced Principal Blockchain Engineer with Payment and Exchange Building Experience

We are developing a completely free social network and messaging platform for football (soccer). In‑match gambling driven by live score updates is the driver of our revenue model. The platform focuses on crypto‑currency for all in‑match bets, leveraging a stake.com‑style strategy.

What we do

oleolesport.com empowers people to identify football experiences and presents them with vetted components necessary to bring the trip to life—tickets, lodging, flights and beyond. We are building a football super app.

Why it matters

Searching and planning a trip around an iconic football experience is time‑consuming, frustrating, overwhelming and often elusive. Football is complicated unlike any other sport, with players playing for club and country simultaneously. Fans are looking for a place to Kick Off.

Why we are better

Our search‑less travel approach means a soccer/football experience can be discovered, planned and purchased in minutes without the endless search‑driven lunacy and inefficiency.

Technical Skills and Experience

• Blockchain Development Experience
  • Proficiency in building decentralized applications (dApps) and smart contracts on blockchain platforms like Ethereum, Binance Smart Chain, or Solana.
  • Deep understanding of cryptocurrency protocols, blockchain consensus mechanisms, and token economics.
• Smart Contract Development
  • Extensive experience designing, deploying, and auditing secure and efficient smart contracts. Familiar with Solidity for Ethereum or other smart contract languages for different blockchains.
  • Understanding of smart contract auditing tools (e.g., Mythril, Slither).
• Cryptocurrency Wallet and Payment Integration
  • Experience with integrating cryptocurrency wallets (MetaMask, Trust Wallet, etc.) and managing crypto payments securely on a platform.
  • Familiarity with working on wallet development, multi‑sig wallets, and secure transaction management.
• Security and Cryptography
  • In‑depth knowledge of cryptographic principles (hash functions, public‑key cryptography, etc.) to ensure secure transactions.
  • Familiarity with blockchain security best practices, including protection against attacks (51% attacks, replay attacks, double‑spending, etc.).
• Scalability Solutions
  • Knowledge of Layer 2 scaling solutions (e.g., Optimistic Rollups, zk‑Rollups, sidechains) to ensure the gambling platform can handle a high volume of micro‑transactions efficiently.
• Experience with APIs and Backend Integration
  • Proficient in integrating third‑party blockchain tools or SDKs and off‑the‑shelf backend solutions.
  • Experience working with APIs to interact with gambling or financial platforms, and with backend development using frameworks like Django or Express.js.

Professional Experience

• 5+ years of experience in blockchain development, ideally with cryptocurrency payment systems or gambling/betting platforms.
• Proven track record of building and deploying large‑scale blockchain systems or financial applications.
• Experience working with cryptocurrency exchanges or other fintech platforms is a plus.

Soft Skills

• Strong problem‑solving and debugging skills.
• Ability to work in a fast‑paced environment and integrate blockchain solutions with an existing tech stack.
• Experience working cross‑functionally with product managers, compliance officers, and marketing teams to ensure smooth product launches.

Educational Background

• A degree in Computer Science, Software Engineering, Mathematics, or a related technical field.
• Industry certifications in blockchain development (e.g., Certified Blockchain Developer) or participation in blockchain‑focused hackathons/projects would be valuable.

Solutions not problems.

• Creative problem solver who can courageously propose and support new ideas to our organization. Not interested in best practices, lets build something better!
• Ability to adapt. An ideal candidate will welcome the opportunity to solve a broad range of problems using a wide array of technologies.
• Comfortable with ambiguity, shifting priorities and general growing pains of an early‑stage technology company.
• An exceptional entrepreneurial judgment that fosters independence over micro‑management.
• Understanding of football and international sports a huge plus.

Ole Ole is located in beautiful Santa Monica, however, this role requires some travel. We are privately held and rapidly growing!