Blockchain Developer Job Description Template

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Blockchain Developer Job Description Template

Blockchain developers are at the forefront of the digital revolution, leveraging blockchain technology to build secure and innovative solutions. From cryptocurrency platforms to smart contracts and decentralized applications (dApps), these professionals design and implement systems that reshape industries. With expertise in data structures, cryptography, and programming languages like Python and Solidity, blockchain developers play a pivotal role in advancing blockchain platforms and distributed ledger systems. Whether working in finance, supply chain, or healthcare, blockchain developers bring scalability, efficiency, and trust to digital ecosystems.

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Job Overview

Blockchain developers specialize in creating decentralized applications (dApps) and integrating blockchain platforms into existing systems. They leverage blockchain technology, cryptography, and smart contract development to build secure, efficient systems for diverse applications such as finance, supply chain, and gaming. The role involves collaborating with cross-functional teams, including project managers, software engineers, and stakeholders, to deliver innovative blockchain solutions. Successful candidates demonstrate hands-on experience with blockchain architecture, programming languages such as Solidity and Python, and the ability to solve complex problems effectively.

Key Responsibilities

Designing blockchain systems. Develop blockchain architecture, including smart contracts and consensus algorithms, to support scalable and secure systems.
Implementing smart contracts. Write and deploy smart contracts using programming languages like Solidity and Python on platforms like Ethereum and Hyperledger.
Developing dApps. Create decentralized applications with seamless user interfaces and optimized functionality for blockchain networks.
Ensuring security. Implement cryptographic methods to secure blockchain systems against vulnerabilities and cyber threats.
Collaborating with teams. Work with cross-functional teams, including front-end and back-end developers, to integrate blockchain technology into applications.
Testing and debugging. Conduct rigorous testing to identify and fix bugs, ensuring high-quality performance and compliance with blockchain protocols.
Optimizing blockchain systems. Enhance the scalability and efficiency of blockchain networks to support increasing demand.
Maintaining blockchain platforms. Monitor and update blockchain applications to ensure reliability and functionality over time.
Researching advancements. Stay informed about new blockchain technologies, tools, and best practices to drive innovation.

Qualifications and Skills

Education. Bachelor’s degree in computer science, software engineering, or a related field.
Experience. Hands-on experience with blockchain platforms like Ethereum, Hyperledger, and Bitcoin networks.
Technical skills. Proficiency in programming languages such as Python, Solidity, and Java, as well as knowledge of blockchain protocols and APIs.
Problem-solving skills. Ability to address complex issues, debug blockchain systems, and implement secure solutions.
Communication skills. Strong verbal and written skills for collaborating with stakeholders and team members.
Knowledge of cryptography. Familiarity with cryptographic techniques to secure blockchain systems and data.
Project management. Experience in managing blockchain projects from conception to implementation, including stakeholder coordination.
Adaptability. Willingness to learn and implement advancements in blockchain technology and methodologies.
Certifications. Relevant certifications, such as Certified Blockchain Developer (CBD), are a plus.

About Our Company

We are an innovative company at the forefront of integrating blockchain technology into real-world applications. Our mission is to transform industries through cutting-edge blockchain solutions, fostering efficiency, security, and transparency. Our team values collaboration, continuous learning, and creativity in solving complex challenges. Join us to contribute to groundbreaking projects and redefine the future of technology.

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What does a blockchain developer do?

A blockchain developer designs and implements blockchain systems, ensuring their scalability, security, and efficiency. These professionals work on building and optimizing blockchain networks, writing smart contracts, and developing decentralized applications (dApps) for various blockchain platforms like Ethereum and Hyperledger. They collaborate with stakeholders, including cross-functional teams, to identify business needs and implement tailored blockchain solutions.

By employing cryptography and consensus algorithms, blockchain developers protect data integrity while enabling seamless transactions across a distributed ledger. Their work often involves programming languages such as Python, Java, and Solidity, ensuring robust and user-friendly interfaces. Additionally, they troubleshoot, debug, and refine systems to address security vulnerabilities and optimize performance.

Blockchain developer duties and responsibilities

Blockchain developers play a pivotal role in building and maintaining blockchain systems. Their responsibilities include:

Developing blockchain architecture. Create robust blockchain systems, including protocols and nodes, to support decentralized applications.
Building smart contracts. Design and deploy smart contracts to automate processes within blockchain networks.
Creating decentralized applications. Build scalable, user-friendly dApps for various industries, including finance and healthcare.
Testing blockchain systems. Identify vulnerabilities and debug blockchain applications for secure and seamless performance.
Collaborating with teams. Work with software engineers, project managers, and stakeholders to align blockchain projects with organizational goals.
Integrating APIs. Connect blockchain platforms with external systems using APIs for enhanced functionality.
Optimizing blockchain networks. Enhance the performance and scalability of blockchain systems to accommodate growing user demands.
Maintaining systems. Provide ongoing support and updates to blockchain applications to ensure stability and security.

How to write a blockchain developer job description

To create an effective blockchain developer job description, follow these steps:

Start with a clear summary. Highlight the importance of the role and its relevance to your organization.
List key responsibilities. Include tasks like blockchain architecture design, smart contract development, and debugging.
Detail qualifications. Specify required technical skills, certifications, and experience levels, such as a bachelor’s degree in computer science.
Highlight benefits. Showcase growth opportunities and the impact of working on cutting-edge blockchain projects.
Include company culture. Mention your organization’s mission and values to attract candidates that are aligned with your goals.

FAQs about blockchain developers

1. What is the role of a blockchain developer?

A blockchain developer is responsible for creating, maintaining, and optimizing blockchain systems to enable secure, decentralized solutions. This includes developing smart contracts, building decentralized applications (dApps), and working with blockchain protocols. They collaborate with cross-functional teams and leverage programming languages like Python and Solidity to address business needs while ensuring the security and scalability of the blockchain network.

2. What qualifications are required for blockchain developers?

To succeed as a blockchain developer, candidates need a solid foundation in computer science, programming languages like Python, Java, and Solidity, and a strong understanding of cryptography and blockchain protocols. Skills in data structures, distributed ledger systems, and smart contract development are essential, along with soft skills like problem-solving and communication to work effectively with team members and stakeholders.

3. What industries hire blockchain developers?

Blockchain developers are in high demand across industries such as finance, healthcare, supply chain, and gaming. They play a key role in building blockchain applications for cryptocurrency, ensuring transparency in supply chain logistics, and enhancing data security in healthcare records. With the rise of decentralized finance (DeFi) and Web3, more sectors are embracing blockchain innovation.

4. How do blockchain developers ensure security?

Blockchain developers ensure security by implementing robust cryptographic algorithms, designing secure smart contracts, and employing best practices in blockchain protocols. They conduct vulnerability assessments, test for weaknesses, and use secure coding practices to safeguard against cyberattacks and security breaches. Regular audits and updates also help maintain the integrity of blockchain systems.

5. What is the salary range for blockchain developers?

Blockchain developer salaries vary based on experience, location, and industry. In the U.S., they typically range from $83,000 to $132,000 annually, with higher salaries for senior roles and specialized skills.

6. What tools do blockchain developers use?

Blockchain developers rely on tools like Ethereum and Hyperledger frameworks, programming languages such as Python and Java, and debugging tools for smart contract development. Other tools include blockchain platforms, APIs for application development, and version control systems like Git. These tools enable them to build secure, scalable, and innovative solutions.

Hire blockchain developers on Upwork

Blockchain developers are essential for organizations looking to leverage blockchain technology to drive innovation and build secure systems. Whether you're working on blockchain projects in cryptocurrency, supply chain, or healthcare, hiring a skilled blockchain developer ensures you can implement scalable, efficient, and secure solutions. These developers bring expertise in data structures, blockchain platforms, and smart contract development, making them invaluable for creating high-performing systems.

Upwork connects businesses with top blockchain developers who are ready to bring your ideas to life. Whether you're seeking freelance blockchain professionals for a short-term project or experienced developers for long-term needs, Upwork provides access to a global talent pool. Post your job today and find the blockchain expertise your project requires.

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$45 hourly
Abed A.
- 4.8
- (42 jobs)
Breda, NB
Blockchain
Ionic Framework
Smart Contract
Angular 2
Ethereum
Amazon MWS
API Development
SaaS
Vue.js
Angular
PHP
Laravel
JavaScript
React
Overview I’m Abed — Senior Full-Stack & AI Engineer (15+ years). I build and scale production-grade SaaS, marketplaces, and AI-powered e-commerce with clean architecture, measurable KPIs, and reliable delivery. What I deliver: 🛒 Multichannel commerce & ops: Amazon SP-API, Shopify, eBay, bol.com; listings/sync, orders/stock, pricing & rule engines, ERP/WMS/logistics/accounting integrations. 🤖 AI/LLM features: Product content from images, attribute mapping, RAG assistants, and cost-controlled AI microservices (OpenAI + self-hosted). 💳 FinTech & payments: KYC-ready APIs, reconciliation dashboards, audit trails, secure transaction flows. 🪙 Web3: NFT marketplaces & token utilities on Ethereum/Solana, wallet flows, IPFS pipelines. 🚀 SaaS/MVPs: Rapid PoCs → scalable releases with CI/CD, observability, documentation. Why hire me: 🧭 I own the architecture through launch and integrate the messy bits (legacy systems, 3rd-party APIs, data sync). 📈 Proven impact: SellEnvo (300+ customers), Mymesh (1,000+ buildings), B2BPay (3,000+ companies). 🗣️ Clear comms: short discovery → scoped milestones → weekly demos → on-time delivery. Selected projects 🛍️ SellEnvo — Co-Founder & Lead Architect. AI-powered multichannel SaaS; plug-and-play integrations; AI microservice shared with Listapro. (Laravel, Vue, AWS) — sellenvo.com 🧠 Listapro.ai — AI & Backend Dev. .NET Core backend for OpenAI + hosted LLMs; Shopify integration; Azure CI/CD. — listapro.ai 🏢 Mymesh — Senior Full-Stack. Smart-building dashboard + IoT sensors/control; microservices; SignalR realtime. — mymesh.nl 🗓️ Planbition — Team Lead. REST APIs, Ionic mobile app, worker planner, ML auto-planning, timesheets. — planbition.nl 💱 B2BPay — Backend & Integrations. FX/global payments APIs; OpenBank API; dashboards; DigitalOcean. — b2bpay.co 🌾 InventoryClub — Lead Blockchain. VNT token + smart contracts; trading wallet/app; MultiChain network. — inventoryclub.com 🪙 Sandwich.Network (Solana) — Full-Stack & Blockchain. Create/hold/trade NFTs; JS smart-contract integration. — sandwich.network ⭐ MyDC (Stellar) — Full-Stack & Payments. Wallet (buy/sell MYDC), payment gateway APIs, KYC/admin dashboard. — mydc.com.my 🎧 MIXO (Electron) — Cross-platform music library manager for DJs; audio library integrations. — mixo.dj 🎻 ProjectSAM Downloader (Electron + Vue) — Buy/download/manage orchestral libraries; payments; search. — projectsam.com 🚢 SoftSHIP (Ionic + Angular) — Shipping ops mobile app + web dashboard. — softship.com 🔐 Semieta (C#/.NET + Angular) — Visitor management & access control with door-lock/sensor integrations. — semieta.com 👨‍👩‍👧‍👦 IntelliPresence — Family privacy platform: IoT device link, telehealth appts, med reminders, video calls. — intellipresence.com 🥑 Avokado (Ionic + Laravel) — Marketplace, catalog, cart/checkout, order tracking, logistics integration. — avocadodelivers.app How I work 🧩 Architecture first (scalable, testable, documented) 📅 Weekly demos & transparent async comms 🔒 Security & privacy by design; your code/IP stays yours 👥 Solo or I can assemble a small senior team for extra velocity Skills: C#, .NET Core, .NET Framework, Delphi, PHP, Laravel, CodeIgniter, Node.js (ExpressJS, HAPI), JavaScript, Vue.js, Angular, React.js, HTML, CSS, TypeScript, Ionic, MySQL, SQL Server, PostgreSQL, MongoDB, ORM frameworks, Amazon SP API, Shopify, eBay, bol.com, crypto APIs, OpenAI APIs, e-commerce, banking, fintech, blockchain, crypto, NFT marketplaces, IoT, booking platforms, payment processing, ERP, CRM, scheduling systems, AI, LLM integration, LLaMA, OpenAI, AI-powered content generation, SEO optimization, automation, low-code (Mendix), cloud-native architecture, microservices, event-driven design, AWS, Azure, Docker, CI/CD pipelines, scalable architectures, performance optimization, and advanced UI/UX solutions.
$100 hourly
Suat K.
- 4.6
- (11 jobs)
Istanbul, ISTANBUL
Blockchain
Solidity
web3.js
.NET Core
Generative AI
Ionic Framework
React Native
Salesforce
Swift
AI Development
React
PHP
Vue.js
TypeScript
JavaScript
Node.js
Kotlin
Angular
🏆 Expert-Vetted 🎯%100 Job Succession ⚙️10+ years of extensive experience in all phases of the software development life cycle with unlimited coding skills. Excellent interpersonal skills and a specialty in translating technical concepts to non-technical clients. A strong ability to work independently and proactively, finishing projects on time and within budget. 🧠A great problem solver I have experience in the following technologies : ✅Angular ✅React ✅Vue ✅Node.js ✅Parse Server (Open Source Contributor) ✅PHP ✅Swift ✅Kotlin ✅Ionic ✅React Native ✅Solidity ✅Candy Machine (Metaplex-Solana) I am always seeking long-lasting relationships, if you do also let's work together! 🤝🏻
$50 hourly
Syed Muhammad W.
- 4.7
- (45 jobs)
Mardan, KP
Blockchain
DApps
Bitcoin
Ethereum
Blockchain Development
Solidity
JavaScript
Binance Coin
React
Node.js
Smart Contract
As a blockchain consultant, I provide expert advice and guidance on the implementation of blockchain technology for your business needs. I specialize in designing and implementing blockchain solutions to enhance security, transparency, and efficiency. Additionally, I can help you navigate legal and regulatory compliance, and advise on the best blockchain platforms and tools for your specific needs. Partner with me to stay ahead of the curve in this rapidly evolving field and take advantage of the many benefits of blockchain technology. Tools & skills: Blockchain Development, Solidity, RUST, Web3, node-js, EVM, React, & Many more..

$45 hourly
Abed A.
- 4.8
- (42 jobs)
Breda, NB
Blockchain
Ionic Framework
Smart Contract
Angular 2
Ethereum
Amazon MWS
API Development
SaaS
Vue.js
Angular
PHP
Laravel
JavaScript
React
Overview I’m Abed — Senior Full-Stack & AI Engineer (15+ years). I build and scale production-grade SaaS, marketplaces, and AI-powered e-commerce with clean architecture, measurable KPIs, and reliable delivery. What I deliver: 🛒 Multichannel commerce & ops: Amazon SP-API, Shopify, eBay, bol.com; listings/sync, orders/stock, pricing & rule engines, ERP/WMS/logistics/accounting integrations. 🤖 AI/LLM features: Product content from images, attribute mapping, RAG assistants, and cost-controlled AI microservices (OpenAI + self-hosted). 💳 FinTech & payments: KYC-ready APIs, reconciliation dashboards, audit trails, secure transaction flows. 🪙 Web3: NFT marketplaces & token utilities on Ethereum/Solana, wallet flows, IPFS pipelines. 🚀 SaaS/MVPs: Rapid PoCs → scalable releases with CI/CD, observability, documentation. Why hire me: 🧭 I own the architecture through launch and integrate the messy bits (legacy systems, 3rd-party APIs, data sync). 📈 Proven impact: SellEnvo (300+ customers), Mymesh (1,000+ buildings), B2BPay (3,000+ companies). 🗣️ Clear comms: short discovery → scoped milestones → weekly demos → on-time delivery. Selected projects 🛍️ SellEnvo — Co-Founder & Lead Architect. AI-powered multichannel SaaS; plug-and-play integrations; AI microservice shared with Listapro. (Laravel, Vue, AWS) — sellenvo.com 🧠 Listapro.ai — AI & Backend Dev. .NET Core backend for OpenAI + hosted LLMs; Shopify integration; Azure CI/CD. — listapro.ai 🏢 Mymesh — Senior Full-Stack. Smart-building dashboard + IoT sensors/control; microservices; SignalR realtime. — mymesh.nl 🗓️ Planbition — Team Lead. REST APIs, Ionic mobile app, worker planner, ML auto-planning, timesheets. — planbition.nl 💱 B2BPay — Backend & Integrations. FX/global payments APIs; OpenBank API; dashboards; DigitalOcean. — b2bpay.co 🌾 InventoryClub — Lead Blockchain. VNT token + smart contracts; trading wallet/app; MultiChain network. — inventoryclub.com 🪙 Sandwich.Network (Solana) — Full-Stack & Blockchain. Create/hold/trade NFTs; JS smart-contract integration. — sandwich.network ⭐ MyDC (Stellar) — Full-Stack & Payments. Wallet (buy/sell MYDC), payment gateway APIs, KYC/admin dashboard. — mydc.com.my 🎧 MIXO (Electron) — Cross-platform music library manager for DJs; audio library integrations. — mixo.dj 🎻 ProjectSAM Downloader (Electron + Vue) — Buy/download/manage orchestral libraries; payments; search. — projectsam.com 🚢 SoftSHIP (Ionic + Angular) — Shipping ops mobile app + web dashboard. — softship.com 🔐 Semieta (C#/.NET + Angular) — Visitor management & access control with door-lock/sensor integrations. — semieta.com 👨‍👩‍👧‍👦 IntelliPresence — Family privacy platform: IoT device link, telehealth appts, med reminders, video calls. — intellipresence.com 🥑 Avokado (Ionic + Laravel) — Marketplace, catalog, cart/checkout, order tracking, logistics integration. — avocadodelivers.app How I work 🧩 Architecture first (scalable, testable, documented) 📅 Weekly demos & transparent async comms 🔒 Security & privacy by design; your code/IP stays yours 👥 Solo or I can assemble a small senior team for extra velocity Skills: C#, .NET Core, .NET Framework, Delphi, PHP, Laravel, CodeIgniter, Node.js (ExpressJS, HAPI), JavaScript, Vue.js, Angular, React.js, HTML, CSS, TypeScript, Ionic, MySQL, SQL Server, PostgreSQL, MongoDB, ORM frameworks, Amazon SP API, Shopify, eBay, bol.com, crypto APIs, OpenAI APIs, e-commerce, banking, fintech, blockchain, crypto, NFT marketplaces, IoT, booking platforms, payment processing, ERP, CRM, scheduling systems, AI, LLM integration, LLaMA, OpenAI, AI-powered content generation, SEO optimization, automation, low-code (Mendix), cloud-native architecture, microservices, event-driven design, AWS, Azure, Docker, CI/CD pipelines, scalable architectures, performance optimization, and advanced UI/UX solutions.
$100 hourly
Suat K.
- 4.6
- (11 jobs)
Istanbul, ISTANBUL
Blockchain
Solidity
web3.js
.NET Core
Generative AI
Ionic Framework
React Native
Salesforce
Swift
AI Development
React
PHP
Vue.js
TypeScript
JavaScript
Node.js
Kotlin
Angular
🏆 Expert-Vetted 🎯%100 Job Succession ⚙️10+ years of extensive experience in all phases of the software development life cycle with unlimited coding skills. Excellent interpersonal skills and a specialty in translating technical concepts to non-technical clients. A strong ability to work independently and proactively, finishing projects on time and within budget. 🧠A great problem solver I have experience in the following technologies : ✅Angular ✅React ✅Vue ✅Node.js ✅Parse Server (Open Source Contributor) ✅PHP ✅Swift ✅Kotlin ✅Ionic ✅React Native ✅Solidity ✅Candy Machine (Metaplex-Solana) I am always seeking long-lasting relationships, if you do also let's work together! 🤝🏻
$50 hourly
Syed Muhammad W.
- 4.7
- (45 jobs)
Mardan, KP
Blockchain
DApps
Bitcoin
Ethereum
Blockchain Development
Solidity
JavaScript
Binance Coin
React
Node.js
Smart Contract
As a blockchain consultant, I provide expert advice and guidance on the implementation of blockchain technology for your business needs. I specialize in designing and implementing blockchain solutions to enhance security, transparency, and efficiency. Additionally, I can help you navigate legal and regulatory compliance, and advise on the best blockchain platforms and tools for your specific needs. Partner with me to stay ahead of the curve in this rapidly evolving field and take advantage of the many benefits of blockchain technology. Tools & skills: Blockchain Development, Solidity, RUST, Web3, node-js, EVM, React, & Many more..
$60 hourly
Joao F.
- 5.0
- (20 jobs)
Tomar, SANTARÉM
Blockchain
Content Marketing Strategy
Creative Writing
Content Creation
Blog Writing
Blog Content
Writing
Copywriting
Digital Marketing
Sports Writing
Cryptocurrency
SEO Keyword Research
Search Engine Optimization
SEO Writing
On-Page SEO
Hello! 🤚 I am João and I am a Content Marketing Specialist with proven professional expertise in several areas of marketing. From small to big enterprises, during the past 5 years, I helped a number of companies to define a unique value proposition of their brands, target markets and develop strategies to connect with clients through optimised and engaging content. 🤝 My professional experience is based on a solid educational background. I have a Bachelor's Degree in Management and a Master's Degree in Management with a Specialisation in Strategic Marketing from two of the best Business Schools in Europe 📖 I can help you with: - Content Creation 🔠 - Copywriting ✒️ - Search Engine Optimization 🔎 - Social Media Marketing 📱 - Branding ™️ - Remote Work Transition 👨‍💻 Your project will become my number 1️⃣ priority until you are fully satisfied and you achieve your goals 🎯 Feel free to contact me and clear your doubts! Let's reach the top together! 🏅 Joao
$50 hourly
Piyush G.
- 4.8
- (53 jobs)
New Delhi, DELHI
Blockchain
KuCoin Shares
API
Automation
Blockchain Development
Node.js
Python
Cryptography
Binance Coin
Cryptocurrency
Smart Contract
Solidity
I am a blockchain smart contract Developer & Consultant, writing smart contracts, creating cryptocurrencies, NFTs, and launching ICOs, with 5 years of experience with solidity and smart contract development in the ethereum blockchain ecosystem. My expertise: - Determining the viability of a blockchain based solution for your business needs - Write smart contract logic code for anything you can think of. - Decentralized cryptocurrency exchange (DEX) - Front Running / Back-running Bots - DEX based trading bots for cryptocurrency - Binance smart chain development - Smart contract Audit - NFT, IPFS, ERC721, ERC1155 development - Token & Coin development - Staking, yield farming, lottery, prediction smart contracts
$130 hourly
Wilson N.
- 4.6
- (42 jobs)
Geneve, GE
Blockchain
International Law
Trade Law
FinTech Consulting
Intellectual Property Law
Regulatory Compliance
Legal Consulting
GDPR
Arbitration
Data Privacy
Corporate Law
Contract Law
Contract Drafting
I’m a Swiss-based banking, compliance, and commodities professional with over five years of experience in Private and Commercial Banking at a leading global financial institution, combined with hands-on legal and operational experience in the oil, gas, and commodities trading sector. I help businesses, trading houses, financial intermediaries, and private clients navigate the most demanding parts of banking and commodities — KYC, onboarding, AML compliance, credit coordination, trade finance, and trust structuring — with the rigor expected at tier-1 global banks and trading firms. What I do: • KYC & Client Onboarding — End-to-end coordination of corporate, commodities, and private client onboarding, including complex multi-jurisdictional structures, PEP screening, source-of-wealth and source-of-funds analysis, and regulatory file remediation. • AML & Compliance Advisory — Drafting and reviewing compliance documentation, escalation memos, sanctions checks (including OFAC, EU, and Swiss regimes), and internal control frameworks aligned with FINMA, EU, and international standards. Strong exposure to commodities-related compliance risks including counterparty due diligence and embargo screening. • Commodities, Oil & Gas Advisory — Contract drafting and review for the supply, purchase, and trading of energy products (crude oil, refined products, LNG, metals, and soft commodities). Familiarity with trade finance instruments (LCs, SBLCs, prepayment structures), Incoterms, and cross-border supply chain considerations, particularly across Africa, the Middle East, and emerging markets. • Trust & Wealth Structuring — STEP-certified in International Trust Management. I advise on trust formation, fiduciary obligations, and cross-border wealth structures for HNW and UHNW clients, including those with commodities and trading interests. • Credit & Financial Analysis — Preparation of credit reviews, financial statement analysis, and risk assessments for mid-market, corporate, and commodities clients (currently completing CFI’s Finance & Capital Markets certification). • Legal & Contract Support — Contract drafting and review, regulatory research, and legal opinions, building on my LL.M. in International Contracts and Arbitration (University of Fribourg) and prior experience in international arbitration at a top-tier Swiss law firm and in legal/operations at a Geneva-based oil and commodities trading house. Industries I’ve supported: banking, asset management, commodities trading, oil and gas, energy, fiduciary services, healthcare, and technology. Languages: English (native), French (professional). I work discreetly, deliver to institutional standards, and turn complex regulatory and commercial requirements into clear, actionable outcomes. Whether you need a one-off KYC file reviewed, a trade finance contract drafted, an onboarding process built from scratch, or ongoing compliance and commodities advisory, I bring the perspective of someone who operates at the intersection of global banking, law, and commodities every day. Let’s discuss your project.
$35 hourly
Yassine Z.
- 5.0
- (6 jobs)
Tirana, TIRANE
Blockchain
Russian
Virtual Assistance
French
Task Coordination
Phone Communication
AI App Development
Teaching
Translation
AI Development
FinTech
Software Development
Back-End Development
Spring Framework
Java
MongoDB
DevOps
Hibernate
Microservice
SQL
Software Engineer | AI Engineer | Backend Architect | Video Editor Hi there! I’m a hard-working, results-oriented Software Engineer with deep experience in designing, building, and maintaining complex, high-impact systems. I thrive in environments that require sharp problem-solving, structured thinking, and relentless commitment to quality. With a Master’s degree in Artificial Intelligence and over 12 years of professional software engineering experience (since 2013), I have delivered solutions across banking & fintech, healthcare, blockchain, telecommunications, insurance, social media, and data analytics. I focus on understanding the WHY before implementing the HOW, ensuring every solution is scalable, maintainable, and aligned with business goals. In addition to software engineering, I also provide professional video editing services, creating engaging content for YouTube, social media, promotional videos, and educational content. I combine creativity with modern AI-powered workflows to deliver polished, visually appealing videos efficiently. ⸻ 🧩 Key Strengths • 🔹 Strong communication, leadership, and cross-team collaboration • 🔹 Solid theoretical background in AI, mathematics, and computer science • 🔹 Adaptable to evolving technologies, industries, and project requirements • 🔹 Results-driven mindset with a passion for clean architecture and scalable solutions • 🔹 Creative eye for storytelling, pacing, and visual content production ⸻ 🧠 Core Skills & Technologies 💻 Software Engineering Backend Engineering • Java 21 · Spring Boot · Spring Framework · Spring Security · Spring MVC · Spring Data JPA • Quarkus · Hibernate · RESTful APIs · JWT · JUnit · Cucumber · Reactive Programming · AML · Python for AI Frontend Engineering • Vaadin · Swing · JavaFX · Angular AI Integration & Engineering • Daily use of AI tools such as Claude Code for development acceleration • Reviewing, validating, and refining AI-generated outputs for quality and correctness • Context engineering and prompt engineering • AI-assisted software development and productivity optimization Cloud & DevOps • AWS (SES, SNS, S3, EC2, ELB, Lambda, Cognito, KMS, RDS, CloudWatch, Route53, IAM, API Gateway, CloudHSM, Rekognition, Secrets Manager, VPC) • Jenkins · GitHub Actions · GitLab CI · Maven · Gradle · SonarQube • Docker · Kubernetes (Basic) · ECS · EKS • Terraform (Learning) · CloudFormation (Basic) Architecture & System Design • Microservices · Event-Driven Architecture · DDD · REST APIs · Kafka · RabbitMQ · Redis · Apache Avro · Spring Cloud Databases • PostgreSQL · MySQL · MongoDB · Redis Testing & Quality • TDD · JUnit · Cucumber · RestAssured · Postman · SonarQube ⸻ 🎬 Video Editing • Professional editing for YouTube, Instagram, TikTok, Facebook, and promotional videos • Short-form and long-form content editing • Smooth cuts, transitions, pacing, and storytelling • Motion graphics, animated text, subtitles, and captions • Audio synchronization, cleanup, music, and sound effects • Color correction and basic color grading • AI-assisted editing workflows for faster, high-quality production ⸻ 🌍 Translation & Localization • Professional translation between English, French, Arabic, and Russian • Technical documentation and software localization • Business documents, contracts, certificates, and official correspondence • Proofreading, editing, and formatting • Accurate, culturally appropriate, and detail-oriented translations ⸻ 🚀 Professional Experience As a Software Engineer, I have worked on multiple enterprise systems: 1. Banking & FinTech: SEPA integration, online banking, high-load OLTP systems, blockchain (Hyperledger Fabric), KYC/KYB/AML, trading systems, performance optimization, architecture improvements, and business change requests. 2. Healthcare: High-security hospital and health insurance systems. 3. Blockchain: Smart contract integration and secure on-chain/off-chain solutions. 4. Social Media: Scalable backend services and REST APIs. 5. Telecommunications & MIS: Real-time event-driven systems using Kafka and microservices. 6. Analytics: Large-scale data aggregation and reporting pipelines. As a Video Editor, I create engaging visual content optimized for social media, educational platforms, and promotional campaigns, focusing on clean editing, storytelling, and audience engagement. ⸻ 🤝 Soft Skills • Strong team player and active listener • Self-motivated and results-oriented • Analytical problem solver with deep focus on complex systems • Fast learner with a passion for continuous improvement • Excellent communication and collaboration skills • Creative mindset with strong attention to detail.
$80 hourly
Shahzain T.
- 5.0
- (21 jobs)
Karachi West, SINDH
Blockchain
DApps
JavaScript
Ethereum
Blockchain Development
Smart Contract
web3.js
Solidity
Hey, I’m a certified blockchain dev (BTA) who’s been building smart contracts, Web3 apps, and automation tools on Ethereum and Solana for the past few years. I’ve worked on everything from utility tokens and NFT platforms to automating real-time alerts and building systems that connect on-chain logic with off-chain services. A few projects I’ve built have gone live, sold out fast, and are still running strong. Here’s what I usually work on: Smart contract development (Solidity, anchor) Full-stack dApps (React, Firebase, Firestore, web3.js, etc.) Web3 integrations (wallets, transactions, token gating) Solana tools and automation (wallet listeners, volume trackers, basic bot logic) Telegram integrations for updates/alerts I like working on creative ideas, especially if you're building something fresh in the Web3 space. Whether you’re planning a launch, building a utility around your token, or need backend logic tied to on-chain activity—I can help make it happen. Let’s build something solid.
$65 hourly
Meyer Y.
- 5.0
- (3 jobs)
New York, NY
Blockchain
Node.js
WordPress
Solidity
Java
React
Visual Basic for Applications
Solana Blockchain Specialist | Bots • Validators • GRPC • Pump.fun Execution I specialize in building real-time Solana trading infrastructure focused on ultra-low-latency execution. Key Capabilities: - Custom Solana bot creation for token launches - Setup and optimization of Solana validators on bare metal servers - Decoding shreds with Rust to detect Pump.fun launches directly from the validator - Slot0 transaction landing via validator-based execution - GRPC streaming via Yellowstone (validator-connected or RPC-based) - Real-time decoding of Pump.fun buy/sell flows through GRPC Slot 0 Transaction Landing: -Durable Nonce System – enables simultaneous submission to multiple relayers (e.g., Oslot, Blockrazor, Bloxroute, NextBlock, Helius) where only the fastest transaction confirms on-chain -Validator-Proximity Routing – dynamically locates the current validator leader’s region (e.g., NY, Frankfurt, Tokyo) and submits to the geographically closest endpoint for lowest latency -GRPC-based PnL Tracking – continuous real-time subscription to wallet and token streams for live profit/loss computation -Bare-Metal Environment Setup – optimized Linux configuration (sysctl tuning, NVMe storage, CPU pinning) to ensure peak validator and bot performance Solscan API Integration: - Pulling live token and trade data for real-time signals inside bots - Exporting data to CSV, Excel, or JSON for backtesting and analysis - Support for advanced market strategies, including: • Viewing all Pump.fun AMM migrations over the past day, week, or month • Analyzing creator activity across Raydium and Pump.fun • Counting how many tokens a creator has launched • Identifying the creator of any mint • Detecting use of Jito bundles in prior launches
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