Blockchain Engineer Solidity

Syntropy logo Syntropy

Job Description

We’re looking for a Blockchain Engineer to join our technology organization and work closely together with the R&D/blockchain department and other teams to implement our open internet exchange solution. The role comes with a lot of opportunities to take ownership and responsibility as well as provide your expert input and make an impact on the overall blockchain development plans and strategy.
Main responsibilities will be:

  • Implementing prototype / testnet versions of smart contracts, enabling the open internet exchange
  • Assessing different blockchain implementation options to suit the needs of our solution
  • Working on the project until production, including the launch of the mainnet and smart contract deployments on the mainnet
  • Working closely with other teams to solve product-related problems
  • Designing, developing and deploying Solidity smart contracts
  • Designing and developing front-end interfaces to interact with the smart contracts
  • Designing and developing the back-end operations that support a decentralized application
  • Auditing smart contracts for any security bugs
  • Writing technical documentation
  • Maintaining source code and troubleshooting systems


  • In-depth technical blockchain / Web3 understanding: consensus mechanisms, game theory, tokenomics, smart contracts, price oracles, etc
  • 4+ years as a software developer (experience outside of blockchain)
  • 2+ years Solidity programming experience with a deep understanding of the Ethereum ecosystem and programming principles
  • Understanding of ERC-20, ERC-721 and ERC-1155 token standards
  • Experience with JSON database operations
  • Knowledgeable about Layer-2 technologies
  • Knowledge of continuous integration tools and blockchain management tools
  • Working experience in DevOps environments
  • Experience with Docker
  • Strong knowledge of data structures and algorithms
  • Familiarity with cryptography and experience with Public Key Infrastructure (PKI)
  • Proficiency in programming languages such as Go, Rust is a plus
  • Nice to have: At least one project deployed on Mainnet that holds real user funds
  • Nice to have: knowledge of Solidity security testing tools

Personal Qualifications

  • Strong interpersonal, oral and written communication skills
  • Self-motivated and able to tackle challenging, complex problems in an individual or team-based setting
  • A proactive approach, ability to take ownership of your tasks and a solution-focused mindset
  • Strong problem-solving skills, attention to detail, and high-quality output
  • Willingness to learn new things
  • It would be an advantage if you have experience in computer networks, telecommunications, IoT, ..
  • Computer Science / Math / Economics / Engineering background is a plus
  • A MSc degree or higher is a plus

You get:

  • An innovative and attractive compensation structure (salary + company-issued cryptocurrency tokens as bonus)
  • Professional & personal development budget worth $2000 annually
  • 12 learning days per year dedicated for your professional development
  • Remote-first environment (you’re still welcome to come to one of our offices, but you choose!)
Register to Apply

Please let Syntropy know that you found this job role on

Similar Jobs

Babylon Voice (Manan AI Inc)| New York logo

Data Scientist for AI VOICE ID, 2+ years of Multimedia AI/ML | Babylon Voice (Manan AI Inc)| New York at Babylon Voice (Manan AI Inc)| New York

$95,000 - $150,000
AI Voice ID Crypto Web3 ID ZKP ML
43 days ago
Babylon Voice (Manan AI Inc) New York logo

Data Scientist - Generative AI, 3+ years of AI-experience Babylon Voice | Manan AI | New York at Babylon Voice (Manan AI Inc) New York

$95,000 - $170,000
AI web3 ML Generative AI Wallet
43 days ago
Babylon Voice (Manan AI Inc)|New York logo

TON (Telegram) ZK Cryptography Engineer for AI VOICE ID | Babylon Voice (Manan AI Inc)|New York at Babylon Voice (Manan AI Inc)|New York

$80 - $150
TON ZKP Cryptography Telegram Zero-Knowledge Proof Blockchain Smart contract
43 days ago
Babylon Voice (Manan AI Inc) logo

Zero-Knowledge Proof Engineer, snarkVM on Aleo for AI VOICE ID | Babylon Voice (Manan AI Inc) New York at Babylon Voice (Manan AI Inc)

$80 - $150
ZKP AI snarkVM Aleo Zero-Knowledge Proof
43 days ago
ChainRecorder logo

Senior Bitcoin/Lightning Network Developer at ChainRecorder

bitcoin lightning network
57 days ago
Spend IT logo

Full Stack Developer at Spend IT

$80,000 - $100,000
node typescript api solidity
121 days ago
Glassnode logo

Senior Backend Engineer (Golang) - Greenfield Project (m/f/d). Remote at Glassnode

Backend Engineer Golang SQL Kubernetes Helm
203 days ago
ConsenSys logo

QA Engineer (Confirmations System) at ConsenSys

$139,000 - $175,000
QA Engineer Confirmations Selenium UXUI
205 days ago
Gemini logo

Senior Software Engineer, Fraud at Gemini

$152,000 - $213,000
Scala C++ Typescript Software Engineer
205 days ago
ConsenSys logo

Solidity Engineer at ConsenSys

$187,000 - $235,000
Solidity EVM English< Engineer
206 days ago