Senior Blockchain Engineer

 
We are building a next-generation hybrid platform that combines ecommerce and Web3 technologies. Our goal is to create a scalable, secure, and user-friendly system that integrates modern blockchain features with real-world applications.
 
We are looking for an experienced **Senior Software Developer** to join our team on a flexible basis (full-time or part-time), with a strong preference for long-term collaboration.
 
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🔹 Responsibilities
 
* Build and maintain scalable APIs and microservices
* Integrate blockchain/Web3 functionalities where required
* Collaborate with frontend developers and product team
* Write clean, maintainable, and well-documented code
 
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🔹 Requirements
 
* Solid understanding of backend architecture and system design
* Experience with REST APIs, databases, and cloud services
* Familiarity with Web3/blockchain concepts (preferred)
* Experience with modern frontend frameworks (React or similar is a plus)
* Good communication skills and ability to work remotely
 
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🔹 Nice to Have
 
* Experience in ecommerce systems
* Smart contract or blockchain integration experience
* DevOps / CI-CD knowledge
 
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💰 Compensation
 
✔$30 – $70 USD/hour** (depending on experience)
 OR
✔$4,000 – $9,000 USD/month** (full-time equivalent)
 
Flexible for both **full-time and part-time** engagements.
 
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🌍 Work Setup
 
* Fully remote
* Flexible working hours
* Open to full-time or part-time
* Long-term opportunity with potential for growth
 
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🌐 Company
 
* Website: https://www.artech-digital.com/
* Fiverr Pro: https://pro.fiverr.com/agencies/artech
 
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We value clear communication, practical experience, and a problem-solving mindset. Looking forward to connecting with skilled developers who want to build impactful products.
 

Product Manager – Portfolio Companies
Sirex Portfolio Companies 
Salary: $135,000 – $190,000 USD base + equity 
Location: Remote-first
About the role Own product strategy and roadmap for 1–2 portfolio projects (DeFi protocols, trading platforms or RWA infrastructure).
What you’ll do
Define vision, prioritize features and write specs
Work directly with smart-contract and frontend teams
Design user flows and drive product-market fit
Run user research and iterate fast
Requirements
4+ years Product Management experience
Previous Web3/DeFi product experience mandatory
Strong technical intuition
Apply → Send CV + 1 strongest product case

Frontend Engineer – Web3 Products
Sirex Portfolio Companies 
Salary: $120,000 – $175,000 USD base + equity 
Location: Remote-first
About the role Build beautiful, high-performance frontends for DeFi, RWA and agent platforms (Next.js + Wagmi/Viem stack).
What you’ll do
Ship trading interfaces, dashboards and wallet flows
Optimize for mobile and lightning-fast UX
Integrate with smart contracts and oracles
Work directly with design and product teams
Requirements
3+ years Next.js / React + TypeScript
Strong experience with Wagmi, Viem, RainbowKit or similar
Web3 product intuition (wallets, transactions, gas UX)
Apply → Send CV + GitHub

On-Chain Data Analyst
Sirex Fund + Portfolio 
Salary: $110,000 – $160,000 USD base + equity 
Location: Remote-first
About the role 
Turn raw blockchain data into actionable investment insights and portfolio monitoring tools.
What you’ll do
Build and maintain Dune dashboards + custom indexers
Track TVL, user activity, token flows and protocol health
Create weekly investment memos and anomaly alerts
Support due diligence with on-chain forensics
Requirements
Strong SQL + Python experience
Deep knowledge of The Graph, Dune, Flipside or custom subgraphs
Previous crypto research or trading background
Apply → Send CV + 1 example Dune dashboard

Operations Associate / Chief of Staff
Sirex Fund Salary: $95,000 – $135,000 USD base + carry Location: Remote-first
About the role Be the right-hand person to partners: run fund operations, portfolio support and internal processes.
What you’ll do
Manage deal flow, data rooms and investment memos
Coordinate portfolio reporting and founder updates
Handle legal, compliance and admin tasks
Support events, LP communication and hiring
Requirements
2–4 years in VC, startup ops or consulting
Extremely organized and fast-moving
Web3/native crypto understanding is mandatory
Apply → Send CV + short note “Why you’d be a great CoS”