Jobs

Zpoken is looking for a motivated and talented blockchain engineer with commercial experience of at least 1 year to join to our team on a full-time basis.

About project:

DeFi protocol focused on powering web3 users with seamless experience interacting with crypto assets.

Requirements:

- 1+ years of professional experience with Solidity or other web3 stack (Rust, WASM);

- Experience with Virtual machines used by modern blockchains: WebAssembly, EVM;

- Knowledge of REST principles;

- Understanding blockchain concepts;

- Experience or understanding the approach of smart contracts development;

- Deep knowledge of standard algorithms and data structures;

- Upper-Intermediate level of English.

- Knowledge of blockchain indexer/ big data.

- Knowledge in the field of cryptography.

We offer:

- Flexible schedule and ability to manage your working hours;

- Competitive salary;

- Working in a team of skilled and experienced specialists;

- Opportunities for professional development.

This opportunity offers the chance to build a cutting-edge API platform. You will create a scalable system that performs seamlessly for millions of monthly users while leveraging hands-on development expertise and collaborating closely with senior engineers to drive results.

We’re a group of experienced entrepreneurs with a track record of building successful businesses. Now, we’re embarking on our next venture and are looking for a talented Middle Developer to help bring our vision to life.

Key Responsibilities

1. System Development
   • Implement high-performance API services (Rust) within an established architecture.
   • Contribute to design discussions to ensure speed, security, and scalability.
   • Build modular, maintainable components that support future feature additions.
2. Team Collaboration
   • Participate in code reviews and uphold coding standards.
   • Pair with senior engineers.
   • Deliver features like APIs, CLI tools, and internal management interfaces on time.
3. Optimizing Performance
   • Minimize latency and ensure consistent availability.
   • Enhance database performance with optimized queries (e.g., PostgreSQL).
   • Deploy real-time monitoring and alert systems to identify issues quickly.
4. DevOps and Automation
   • Set up efficient CI/CD pipelines for frequent, reliable releases.
   • Manage Kubernetes-based infrastructure to handle scaling and resource allocation.
   • Develop CLI tools to simplify developer and operational tasks.
5. API Adoption
   • Build straightforward SDKs and client libraries to support developers in different languages.
   • Create tools to simplify debugging and testing API integrations.
   • Ensure API endpoints are well-tested and follow consistent design patterns.

Qualifications

1. Core Skills
   • 4+ years of backend development with expertise in Rust and Node.js/TypeScript; experience with Python is a plus.
   • Experience owning features end-to-end and collaborating closely with senior engineers; prior leadership is a plus.
   • Strong experience in building scalable, high-traffic APIs.
   • Expertise in microservices and event-driven systems.
   • Significant experience in PostgreSQL, including database optimization and performance tuning for high-load systems.
2. Cloud and DevOps Expertise
   • Hands-on experience with AWS and Cloudflare.
   • Skilled in Docker, Kubernetes, and CI/CD tools.
3. Collaboration
   • Ability to communicate complex ideas clearly across teams.
   • Strong decision-making and problem-solving capabilities.
4. Technical Extras
   • Knowledge of observability tools like Prometheus and Grafana.
   • Familiarity with Extensible Provisioning Protocol.

Cowchain blockchain development company is actively looking for Backend Developer to join our development team.

About us:
Cowchain have successfully completed 120+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.


Required skills:
— Around 2 year+ commercial experience in smart contract development on Solidity
— Hardhat/truffle/Foundry
— ERC721/ERC1155/ERC20/Chainlink
— JIRA, gitflow
— Node.js experience
— Web3/Etheres libraries
— LayerZero
— PDAs/CPI, SPL Token/Token-2022, Anchor testing, program accounts

Tech stack:
— Solana (Rust + Anchor)
— JavaScript
— Blockchain EVM-compatible chains DApp development
— Smart contracts development

What will you do:
— Smart contracts development for DeFi, NFT, GameFi solutions
— Integration of smart contract to ReactJs frontend
— Bugfixes and support existing solutions
— Participate in project architecture discussions
— Build solutions from scratch as well as join on-going development process
— Have fun;) 

What we offer:
— Flexible working schedule, remote work
— Competitive salary with bonuses for activities
— Ability to dive into fast-growing blockchain/crypto industry
— Work with modern tech stack (blockchain)
— Paid vacations, sick leaves
— 100% friendly/family team

Are you passionate about blockchain technology? Join our team and kickstart your career in blockchain development! We offer a unique opportunity to attend our internal school, where you will receive training to master advanced blockchain concepts and technologies.

🔥 This position is an internship opportunity at our internal blockchain school, with the possibility of a $1200 reward for successful completion and an offer for a long-term partnership 🔥

Requirements ⬇️

• Degree in Computer Science or a related field, or equivalent practical experience.
• Knowledge of back-end development Rust/Node.js (other technologies are also ok).
• Proficiency in English (B1 level or higher).
• Basic understanding of cryptography (symmetric/asymmetric encryption, hash functions).
• Strong knowledge of algorithms and data structures.
• Knowledge of testing tools and best practices.
• Strong analytical and debugging skills.

Will be a plus ⬇️

• Any knowledge in blockchain/distributed systems/smart contracts.

Responsibilities ⬇️

• Write and manage smart contracts.
• Design, develop, and maintain backend infrastructure for blockchain platforms.
• Implement and run tests to ensure the reliability and performance of applications.
• Integrate blockchain protocols and APIs into backend systems.

We offer ⬇️

• Comprehensive blockchain training in a supportive learning environment.
• Reward of $1200 upon successful completion of training, and also a job offer.
• Opportunities for professional growth and career advancement.
• Participation in challenging and innovative projects.
• Fully remote work. 
• Competitive salary.
• English language courses.
• Paid vacation and sick leave.
• A friendly, open-minded, and supportive team 😊

The role is based in the Kyiv region, and we will expect you to work full-time in the office. We have a shuttle service from the nearest metro station.

About the Job

We are seeking a skilled Core Developer (Rust/ C++) for Swarm Robotics & Sensor Control with over 5 years of professional experience to join our dynamic development team. You will play a key role in building and optimizing the core architectures for the real-time control and management of robotic swarms and sensor systems. This position offers the opportunity to work with cutting-edge technologies and contribute to complex, mission-critical systems in a collaborative environment.
 

What is your Day to Day Mission:

• Design, develop, and maintain robust and scalable systems for swarm control and sensor management.
• Implement efficient communication protocols and real-time processing solutions for robotics.
• Collaborate closely with cross-functional teams to integrate backend components with robotics software and sensor networks.
• Optimize system performance, scalability, and reliability in a distributed robotics environment.
• Solve challenging problems using modern programming languages such as C++ and Rust.

• Participate in code reviews, architecture discussions, and software design decisions.

   

What you bring to the team:

• 5+ years of professional experience in backend development with a strong focus on real-time systems.
• Proficiency in Rust and C++, with a solid understanding of modern software development practices.
• Experience in building and optimizing backend architectures for distributed systems.
• Familiarity with network protocols, multithreading, and low-latency data processing.
• Knowledge of system architecture design, performance optimization, and resource management.

• Ability to work independently, solve complex technical problems, and thrive in a fast-paced startup environment.

   

Nice-to-Have:

• Experience in robotics, swarm control, or sensor integration.
• Familiarity with cloud platforms, Docker, or Kubernetes for scalable deployments.

• Understanding of embedded systems or real-time operating environments.

   

Why Quantum-Systems:

• We Stand with Ukraine
• We believe in the power of combined efforts: straightforward tech expertise paired with a customer-centric focus.
• We are industry pioneers who are ambitious, bold, and visionary.
• We push limits, think outside the box, and strive for technological excellence to shape the future of aerial data.
• We promise to be your runway for individual and professional growth.

We are looking for a developer who is confident working with both Rust and Python.
The project is already running: part of the codebase is written in Rust (core), while integrations and business logic are implemented in Python.

Responsibilities:

• Maintain and further develop the existing project (Rust + Python).
  
   
• Integrate Rust modules into Python (via PyO3/maturin).
  
   
• Optimize performance and fix bugs.
  
   
• Participate in fast releases and bug fixing.
  
   

Requirements:

• 1+ year of commercial experience with Rust.
  
   
• Strong knowledge of Python (3.8+, ideally with experience in data/web libraries).
  
   
• Understanding of multithreading, APIs, and system tools.
  
   
• Ability to quickly dive into existing code and deliver solutions.
  
   

Nice to have:

• Experience with CI/CD, Docker, GitHub Actions.
  
   
• Knowledge of code security and secret rotation.
  
   
• Familiarity with the data/fintech ecosystem (Pandas, Polars, etc.).
  
   

Format: Remote / Hybrid.

Cowchain blockchain development company is actively looking for Solidity Developer to join our development team.

About us:
Cowchain have successfully completed 120+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.

Required skills:
— Around 2 year+ commercial experience in smart contract development on Solidity
— Hardhat/truffle/Foundry
— ERC721/ERC1155/ERC20/Chainlink
— JIRA, gitflow
— Node.js experience
— Web3/Etheres libraries
— LayerZero
— PDAs/CPI, SPL Token/Token-2022, Anchor testing, program accounts

Tech stack:
— Solana (Rust + Anchor)
— JavaScript
— Blockchain EVM-compatible chains DApp development
— Smart contracts development

What will you do:
— Smart contracts development for DeFi, NFT, GameFi solutions
— Integration of smart contract to ReactJs frontend
— Bugfixes and support existing solutions
— Participate in project architecture discussions
— Build solutions from scratch as well as join on-going development process
— Have fun;) 

What we offer:
— Flexible working schedule, remote work
— Competitive salary with bonuses for activities
— Ability to dive into fast-growing blockchain/crypto industry
— Work with modern tech stack (blockchain)
— Paid vacations, sick leaves
— 100% friendly/family team

Hello!
We are Echo Labs, built on the best MEV solutions for validators in the Solana ecosystem. We are looking for a candidate ready to contribute to our project and grow with us!
 

We offer:
• Working in a team of top-tier professionals united by common goals.
• Participation in creating innovative products that shape the future of the blockchain industry.
• Structured support for professional development.
• Competitive collaboration terms.
 

Requirements:
• Experience in commercial Rust development.
• Deep understanding of the Solana ecosystem and practical experience with DeFi (V2, V4, CPMM, CLMM).
• Experience with ShredStream/gRPC.
• Analytical thinking and the ability to optimize existing technical solutions.
 

Technology stack: Rust, Solana, gRPC

We’re Expanding and Looking for Talented Developers!

Our team specializes in working with startups, starting from the earliest stages of their development. Each project we take on is a unique challenge, requiring innovative and effective solutions. That’s why we always stay at the cutting edge of technology.

We believe that productive work is only possible in a comfortable environment with excellent planning. The best solutions are built on well-thought-out architecture, quality code, and modern technologies.

If these priorities resonate with you, you’ll love being part of our team!

Requirements

• 2+ years of production experience with Rust
• Strong knowledge of asynchronous programming (Tokio, async/await)
• Experience with building cross-platform desktop applications using Tauri (or willingness to learn quickly)
• Experience integrating with external APIs (GitHub, AI services, etc.)
• Solid understanding of memory safety, concurrency, and performance optimization
• Experience working with local filesystems and developer tooling (CLI/terminal integration, xterm/wezterm)
• English proficiency sufficient for reading documentation and writing comments
• Strong communication skills and ability to work in a team
• Self-motivation to deliver effective and elegant solutions
   

Nice-to-Haves

• Basic knowledge of React or Vue.js to collaborate with frontend developers
• Experience with GPU acceleration (wgpu, CUDA, Metal/Vulkan APIs)
• Knowledge of WebAssembly (WASM) for cross-platform modules
• Familiarity with DevOps practices (Docker, CI/CD for desktop apps)
• Experience with other system-level languages (Go, C++, TypeScript)
• Familiarity with AI integration in applications (local inference, MCP protocol, etc.)
   

Responsibilities

• Develop and maintain a cross-platform desktop application in Rust (Tauri core + JS frontend integration)
• Implement deep terminal integration (xterm/wezterm) and interaction with local codebases
• Integrate AI services, GitHub APIs, and our MCP server
• Optimize application performance, including GPU acceleration where applicable
• Deliver high-quality, well-tested, and maintainable code

• Collaborate with frontend developers, Business Analyst, and Project Manager on features and architecture decisions

   

What We Offer

• Possibility to be a part of innovative startups from around the world
• Supportive, understanding, and flexible management
• Paid vacations and sick leave
• Opportunities for professional growth and learning
• A friendly and welcoming team

About the Team

• The team size is 24 members
• Well-organized development process involving project managers and QA
• Every developer specializes in their area (back-end, front-end)
• Dedicated teams for each project
• The team's internal communication languages are Ukrainian or russian

• Please include examples of your code with your application — this will save time for both you and us.
• If you have test results or any test documentation, feel free to share them as well. This will help us evaluate your skills much faster.
• A test task may be assigned before or after the interview.

Cowchain blockchain development company is actively looking for Backend Developer(Solana) to join our development team.

About us:
Cowchain have successfully completed 120+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.

Required skills:
— At least 3-year commercial experience in the Backend development
— Node.js experience is A MUST
— Ability to use Solscan to analyze data;
— Compiling, signing and sending transfer transactions;
— Compiling, signing and sending swap transactions;
— Transaction mult-signatures
— Pump.fun / Jupiter / Raydium;
— Bignumber.js / bn.js
— Understanding of gas, priority fee, token account creation
— Meme-coin creation Pump.fum/Meteora
— JIRA, gitflow


Tech stack:
— Node.js, Nest.js, Microservices
— MYSQL, MSSQL, PostgreSQL
— TheGraph (Subgraph), Event indexing back-end
— Azure, AWS, Google Cloud
— Docker, Kubernetes

Will be a plus:
— EVM-based blockchains (Ethereum, Avalanche, Polygon, Binance Smart Chain, Velas, Hedera etc)


What will you do:
— new features development
— bugfixes and support existing solutions
— participate in project architecture discussions
— build solutions from scratch as well as join on-going development process
— have fun

What we offer:
— flexible working schedule, remote work
— competitive salary with bonuses for activities
— ability to dive into fast-growing blockchain/crypto industry
— work with modern tech stack (blockchain)
— paid vacations, sick leaves
— 100% friendly/family team

Role
 

As a Quant Developer you will be building our market making systems from the ground up — quoting engine, order management, execution, risk. You will work closely with our researcher and trader to turn models into production strategies. This role is central to establishing our market making infrastructure and directly drives trading results.

Responsibilities
 

- Develop and maintain market making engine

- Build and optimize connectivity to exchange APIs (OKX, Binance, Bybit)

- Ensure low-latency, reliable execution (Rust, async)

- Implement risk controls and monitoring

- Work with researchers to productionize signals

Requirements
 

- Strong skills in Rust (C++/Go acceptable)

- 3+ years of experience in building real-time / low-latency / high-throughput systems

- Knowledge of concurrency, async/await, memory management

- Familiarity with order books, trading infra is a plus

Perks
 

- Direct impact on production systems and PnL

- Performance-based bonus linked to firm’s trading profit

- Small, high-ownership team

- Remote-first

Bitcoin-native DeFi protocol that allows users to deposit BTC and earn on-chain, auto-compounding yield, all while maintaining full control over their assets. It's a secure, transparent platform that operates on the "Bitcoin‑in, Bitcoin‑out" principle—meaning users deposit Bitcoin and receive their principal plus rewards in BTC—without needing to rely on centralized custodians.

Requirements

• 3+ years of smart contract development experience.
• Strong expertise in Solidity and Ethereum development tools (Hardhat, Foundry, Truffle).
• Solid understanding of EVM internals, gas optimization, and smart contract upgrade patterns.
• Experience with DeFi protocols, token standards (ERC-20, ERC-721, ERC-4626), and staking/yield strategies.
• Familiarity with subgraphs (The Graph) and on-chain/off-chain data flows.

• Proven track record of security best practices (reentrancy, overflow, access control).

   

Responsibilities:

• Maintain and extend existing smart contracts to support new features and integrations.
• Implement secure, optimized, and audited DeFi functionality (vaults, yield strategies, APIs).
• Fix bugs, handle production issues, and manage security escalation if needed.
• Collaborate with front-end and back-end engineers to ensure smooth integration of smart contracts with UI and APIs.
• Write comprehensive tests and documentation to ensure reliability and transparency.

What we offer:

• Remote working format
• Flexible working hours
• Informal and friendly atmosphere
• The ability to focus on your work: a lack of bureaucracy and micromanagement
• 20 paid vacation days
• 7 paid sick leaves
• Education reimbursement
• Free English classes
• Psychologist consultations

• Recruitment process:

  Recruitment Interview — Technical Interview — Client Interview

The CGS-team is actively seeking a highly skilled and motivated Rust Developer who is passionate about coding and determined to excel, to join our team.

About us:

The CGS-team has worked with prestigious clients such as Trello, IBM, Cisco, GrowthDay, Cosuno, LiveArtMarket Inc, and HomeLike. Our projects span various domains, including HealthCare, Education, Booking, E-commerce, and Blockchain (with expertise in NFTs, smart contracts, and DeFi).

From You:

• Rust (Tokio, Axum, async, Anchor);

• PostgreSQL, Redis, Clickhouse;

• gRPC / REST / WebSocket;

• Solana SDK, Lightning, RGB, zk-proofs;

• Docker, Kubernetes, CI/CD, GitHub Actions.

Will be a plus:
• Knowledge of Go programming language;

Responsibilities:

• Design & developing new modules in the system;

• Communicate with PMs, developers, architects, QA engineers and other colleagues and stakeholders;

• Maintaining current code together with the rest of the team;

• Helping the integration team with deployment if needed, etc.

• Integration with 3rd party tools/systems.

Benefits:

▪️ 15 paid vacations and public holidays, with an additional 5 days added for each year of work;

▪️ Work-life balance schedule. We focus exclusively on results, not time, and consider time trackers to be the most horrible thing on the planet;

▪️ 0% bureaucracy;
▪️ English speaking club, courses.

Are you a highly skilled engineer with a passion for Rust, a knack for analytics and machine learning? 

Join a forward-thinking team shaping the future of electric vehicles through real-world innovation. You’ll have the opportunity to tackle high-impact engineering challenges – ranging from EV calibration to predictive energy modeling – with technologies like Rust, C++, Kotlin, and Android. In this role, you’ll not only advance cutting-edge automotive systems, but also elevate machine learning and embedded platforms that touch millions of users.

Requirements:

Must-Have:

• 8+ years of software development experience
• Deep expertise in Rust and/or C++ (Kotlin and Android experience is a strong advantage)
• Strong foundation in statistics and mathematics
• Experience with gRPC-based services and distributed architectures
• Proven background in State of Charge prediction using Cerence Model or similar AI/ML frameworks
• Hands-on experience with EV routing and navigation systems
• Advanced skills in data visualization and analysis (e.g., Matplotlib, Rust plotting tools)
• Strong command of software engineering best practices (e.g., SOLID, maintainable code)
• Proficiency in Git for version control
• Domain knowledge in EV ecosystems: calibration, consumption modeling, predictive energy analytics
• Fluent in English (written and verbal)
• Excellent problem-solving and presentation skills in fast-paced, agile environments

Nice-to-Have:

• Background with battery management systems, predictive analytics, or navigation technologies
• Familiarity with Android, and Kotlin development with integration into embedded automotive systems

Job responsibilities:

• Develop and evolve EV calibration modules
• Enhance ML-driven energy models and inference pipelines
• Integrate calibration and prediction tools into Android-based automotive & embedded platforms
• Improve drive simulation on test rigs and Android emulators
• Conduct code reviews, performance benchmarking, and systematic debugging
• Expand test coverage with unit tests and enhance toolsets for KPI analysis, visualization, and monitoring
• Optimize software to meet strict performance targets (RAM, CPU, GPU, FPS, etc.)
• Collaborate with cross-functional teams to integrate navigation, routing, and prediction modules
• Translate customer needs into tailored technical solutions
• Participate actively in Agile ceremonies—stand-ups, sprint planning, retrospectives, and defect tracking
• Stay ahead of innovations in EV routing, navigation, and predictive modeling

We are seeking an experienced Rust Developer to join our Customer engine team, which develops and maintains the core of the mobile ecosystem.

The main mission of our Customer Mobile Group is to create state-of-the-art development tools and SDKs for enterprise-grade customers. These tools enable developers to identify accessibility issues during the coding and deliver more accessible mobile applications.

Customer

Our client is a market-leading software development company that specializes in web and mobile accessibility. They focuse on providing accessibility automation to enterprises. Their AI-powered products save time and reduce risk via proprietary discovery and analysis algorithms that integrate directly into software development pipelines.

Requirements

• Familiarity with popular Rust libraries, such as Tokio, Actix, Serde, Rayon, and Clap
• Knowledge of Rust’s package management and build systems
• Experience creating embedded applications that run in limited environments
• Experience in algorithm development, research, and performance optimization
• Experience with writing and maintaining unit and integration tests
• Solid understanding of algorithms and data structures
• Upper-Intermediate level of English

WILL BE A PLUS:

• Back-end development experience
• Familiarity with frameworks and tools for building APIs, and Back-end services
• Knowledge of other programming languages, preferably Python

• Basic understanding of AI/ML concepts and experience with integrating AI-driven features into software solutions

   

Personal Profile

• Independent and self-motivated learner
• Excellent problem-solving skills
• Proactive attitude

• Strong team player with a collaborative mindset

   

Responsibilities

• Contribute to an end-to-end life cycle development process of new features from architecture to implementation
• Ensure the timely execution and delivery of high-quality mobile solutions
• Maintain code quality and automate processes
• Work closely with colleagues, management, and other teams to achieve your objectives
• Conduct code reviews and provide feedback in a constructive manner