Jobs Rust

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.

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

As a backend lead developer, you will be a key part of our new ground control station team to improve the capabilities and usability of our VTOL systems. You will take an empowering role: pushing the boundaries of drone technologies. You will be working closely with stakeholders from the Flight Control, AI, and System Test departments to improve and extend our ground control station software.

With the software development of features for our ground control station, you’ll support Quantum Systems‘ mission to transform decision-making processes through aerial data intelligence.

What is your Day to Day Mission:

• Design and implementation of features for our new ground control station software
• Participate in maintenance and improvement of existing ground control station software
• Optimization of UI and UX for drone use cases

• Execution of test procedures and flight tests

   

What you bring to the team:

• You have completed a technical university or a comparable background with a finished degree.
• You are highly experienced in application development, ideally with Rust, C++ or C# experience with automated testing or development, and optionally experience in drones, robots, and geoinformation systems.
• You are experienced in setting up development processes to achieve high delivery and maintenance effectiveness.
• You have a high learning ability and an independent way of working, strong programming skills with an interest in software design and quality.
• You have high-level analytical skills, able to design and lead technical decisions to the end goal.
• You have deep understanding on how things should be done vs how they’re usually implemented.
• You are highly self-motivated and drive your area of responsibility independently.
• Due to your open, communicative, friendly, and competent attitude, it is easy for you to be considered as an internal expert by your colleagues.
• Communication in English is a matter of course for you.

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.

About us
We are building a high-load decentralized platform at the intersection of blockchain and fintech: on-chain data indexing, trading automation, and integrations with DeFi and Web3.

Responsibilities

• Design and develop backend architecture: APIs, queues, indexers, bots/workers for on-chain event processing.
• Develop event-driven architecture with idempotency, exactly-once delivery (transactions + deduplication), outbox/inbox, retries, and DLQ.
• Integrate with Web3/EVM/Solana: read and process events, interact with smart contracts, manage nonces, handle reorg/finality, and multi-chain transactions.
• Work with Subgraph (The Graph): design schemas, implement TypeScript mappings, and optimize blockchain data indexing.
• Develop DeFi integrations: Uniswap v2/v3, AMM pools, pricing, liquidity, routing, slippage/MEV resistance.
• Optimize performance: profile hot paths, migrate critical components to Rust, ensure async/tokio efficiency, manage backpressure.
• Ensure observability and reliability: metrics/traces/logs (Prometheus, Grafana, OpenTelemetry), SLO/SLI tracking, degradation and fallback mechanisms.

• Provide leadership: define technical vision, mentor developers, conduct code reviews, prioritize backlog, and introduce best engineering practices.

   

Requirements

• 5+ years of commercial backend development experience.
• 3+ years in blockchain/DeFi (EVM, Solana, on-chain data, smart contracts, integrations).
• 2+ years in a Tech Lead or Team Lead role.
• Strong Rust experience: async/tokio, network programming, performance profiling.
• Proficiency with queues/events: RabbitMQ/AMQP, delivery guarantees, retries, DLQ, message contracts.
• Experience with Blockchain/DeFi: ABI, events, integration with Solidity and Solana programs, multi-chain interactions.

• Knowledge of Subgraph (The Graph): schema design, mappings, indexing optimization.

   

Nice to have

• Production experience with Rust (tokio, async, tracing), low-level performance profiling.
• Knowledge of Go (CLI/tools), ETL pipelines for on-chain data, DWH (ClickHouse/BigQuery).
• Experience with Layer 2 (Optimism, Arbitrum), cross-chain bridges/protocols.
• Experience with MEV, mempool monitoring, gas optimization.
• Familiarity with Web3 tools: Foundry, Hardhat, Ethers.js, web3.js, Anchor (Solana).

Job Description

Required Qualifications:

• 5+ years of fullstack Backend development experience
• Proficiency in Rust preferred, or experience in one of: Go, C++, Java, or TypeScript
• Strong fundamentals in computer science and networking
• Experience with cloud platforms, containerization, and microservices architecture
• Strong understanding of SQL, NoSQL, NewSQL databases
• Expertise in data pipeline technologies, ELK stack, and Apache Kafka
• Quick learner with strong problem-solving skills
• Excellent communication and collaboration abilities

Preferred Qualifications:

• Experience with real-time data processing, analytics frameworks, and front-end technologies
• Familiarity with metaframeworks like NextJS, NuxtJS, Sveltekit
• Experience building high-throughput, low-latency systems for millions of users
• Familiarity with big data technologies, time-series databases, and data warehousing solutions
• Knowledge of GraphQL, infrastructure-as-code tools, and service mesh technologies

 Technical Skills and Knowledge:

• Data pipelines and ETL processes
• Distributed systems (Kafka, Flink/Spark, Redis)
• ELK stack for log management and analysis
• Cloud-native technologies and serverless architectures
• API design and management
• Performance optimization for large-scale systems
  
  
   

Job Responsibilities

We're seeking an experienced Fullstack Backend Engineer to join our team working on client's platform. You'll be responsible for developing and maintaining core components of our AI-driven cybersecurity solution that helps enterprises detect, investigate, and respond to advanced threats across their entire IT estate.

Key Responsibilities:

• Design and develop scalable backend services and intuitive front-end interfaces for our platform
• Implement data ingestion and processing pipelines for large volumes of security data
• Integrate AI-driven analytics capabilities and optimize system performance
• Develop APIs and integrations with various IT and security tools
• Implement robust security measures and ensure compliance with industry standards
• Troubleshoot complex issues across the full stack of our application

Department/Project Description

The client is a product international company that provides a defence platform that enables development and security teams to protect critical workloads against emerging threats and undiscovered vulnerabilities with a lightweight agent that protects the organisation's public, private and hybrid cloud deployments on-premises data centres managed. In addition, it is an advanced endpoint detection and response platform, which gathers as much information as possible to detect and analyse complex threats while being as non-intrusive as possible, minimising the impact on the network and the endpoint.

We are looking for a versatile and experienced Rust Engineer to join our dedicated team for a long-term collaboration. While the primary focus is building secure smart contracts for next-generation networks (like Casper), we need a specialist who sees the bigger picture. You will own the delivery of complex decentralized solutions—from on-chain logic to system integration. We value robust engineering principles and intellectual flexibility; if you are a strong Rust engineer willing to master blockchain specifics, we want to hear from you.

Who are we?

We are Out Of The Box Systems: a Ukrainian team of passionate, battle-tested engineers and creators united by one goal—delivering real results with clarity, precision, and autonomy. We champion a flexible, pragmatic approach over rigid, static processes. While our roots and primary team are in Ukraine, we collaborate with top talent from various labor markets. We specialize in demanding fields like Rust-first development, AI Engineering, and Computer Graphics, blending performance, security, and innovation into every project. We are deeply invested in the growth of our team members, believing that a person's ability to learn and their openness to feedback are the true keys to long-term success. Our team thrives on solving hard problems and doing the heavy lifting so our clients don’t have to.

Workload

• Full-time, remote collaboration.
• Flexible schedule, with expected availability for team syncs.
• Project-based workload with a focus on clear deliverables.

Responsibilities

• Take ownership of the full technical solution, designing and implementing secure smart contracts and the surrounding systems required to make them usable.
• Bridge the gap between on-chain logic and off-chain reality, designing integration patterns, backend services, and indexing strategies.
• Ensure the long-term reliability and security of the protocol by defining testing standards, conducting internal audits, and designing for upgradability.
• Solve complex distributed system problems, prioritizing performance and economic efficiency (gas/resource optimization) across the entire stack.
• Act as a technical leader and mentor, elevating the team’s standards through code reviews, architectural RFCs, and knowledge sharing.

Required Skills

• Rust Proficiency: Solid professional experience with Rust. You understand memory safety, concurrency, and how to write clean, idiomatic code.
• Engineering Fundamentals: Deep understanding of computer science principles, data structures, algorithms, and distributed systems architecture.
• Testing Culture: A strong habit of writing comprehensive unit and integration tests. You don't just write code; you prove it works.
• Intellectual Flexibility: A demonstrated ability (and willingness) to dive into new documentation, learn new protocols (like Casper/Wasm), and adapt to changing technical requirements.
• English Proficiency: Upper-Intermediate (B2) or higher, capable of discussing abstract architectural concepts clearly.

Preferred Skills

• Blockchain Experience: Experience with smart contract development on any chain (Casper, Solana, NEAR, Ethereum, Polkadot).
• Wasm & Compilers: Knowledge of WebAssembly or low-level compilation targets.
• Cryptography: Understanding of hashing, signatures (Ed25519/Secp256k1), and cryptographic primitives.
• Infrastructure: Experience with Docker, CI/CD pipelines, or cloud infrastructure (AWS/GCP).
• Backend: Experience with standard Rust backend frameworks (Tokio, Axum, Actix) and databases (PostgreSQL).

What you get

• The opportunity to architect and build challenging projects at the forefront of the Rust blockchain ecosystem.
• A transparent, friendly, and supportive team environment that values ownership and competence.
• A clear path for growth, where you are encouraged to experiment with and master new technologies.
• Competitive compensation based on your skills and experience.
• This is a long-term collaboration based on a 2-year B2B contract, reflecting our mutual investment in your growth and success with our team.

We are looking for a true Polyglot Engineer to join our team for a long-term collaboration. In the fragmented world of Web3, the ability to bridge different technologies is a superpower. We need a specialist who can architect and build the critical off-chain infrastructure that powers decentralized applications. If you are proficient in Rust but comfortable diving into C++, Python, and Node.js to get the job done, this role is for you.

Who are we?

We are Out Of The Box Systems: a Ukrainian team of passionate, battle-tested engineers and creators united by one goal—delivering real results with clarity, precision, and autonomy. We champion a flexible, pragmatic approach over rigid, static processes. While our roots and primary team are in Ukraine, we collaborate with top talent from various labor markets. We specialize in demanding fields like Rust-first development, AI Engineering, and Computer Graphics, blending performance, security, and innovation into every project. We are deeply invested in the growth of our team members, believing that a person's ability to learn and their openness to feedback are the true keys to long-term success. Our team thrives on solving hard problems and doing the heavy lifting so our clients don’t have to.

Workload

• Full-time, remote collaboration.
• Flexible schedule, with expected availability for team syncs.
• Project-based workload with a focus on clear deliverables.

Responsibilities

• Design, implement, and maintain high-performance backend services and indexers using Rust as the primary language.
• Integrate with diverse blockchain nodes and legacy systems, utilizing C++ for performance-critical modules or native bindings.
• Develop robust APIs and tooling scripts using Node.js and Python to ensure seamless interaction between on-chain data and client applications.
• Architect scalable data pipelines that can handle the asynchronous nature of blockchain events reliably.
• Act as a bridge between technologies, mentoring team members on how to effectively navigate a multi-language stack.

Required Skills

• Polyglot Proficiency: You must be comfortable working in a multi-language environment.
  • Rust: Strong proficiency for core backend logic and safety.
  • C++: Experience with systems programming, reading legacy code, or performance optimization.
  • Python: Proficiency for data processing, testing frameworks, or rapid scripting.
  • Node.js: Experience with the JS/TS ecosystem, particularly for Web3 SDKs and lightweight services.

• Backend Architecture: Deep understanding of API design (REST/gRPC), database modeling (SQL/NoSQL), and microservices.
• Distributed Systems: Understanding of eventual consistency, message queues, and handling asynchronous events.
• Intellectual Flexibility: The ability to pick the right tool for the job and adapt quickly to new libraries or protocols.
• English Proficiency: Upper-Intermediate (B2) or higher.

Preferred Skills

• Ethereum & EVM: Deep understanding of the Ethereum ecosystem, JSON-RPC standards, event logs, and ABI decoding.
• Major Chains: Experience integrating with other major networks (Solana, Near, Cosmos, or Bitcoin).
• Blockchain Nodes: Experience running or modifying nodes (e.g., Geth, Casper Node, Substrate).
• DevOps: Experience with Docker, Kubernetes, and CI/CD pipelines.
• Cryptography: Basic understanding of cryptographic primitives used in blockchain (hashing, signatures).

What you get

• The opportunity to work on complex, high-impact infrastructure projects where your versatility is a major asset.
• A transparent, friendly, and supportive team environment that values ownership and competence.
• A clear path for growth, where you are encouraged to experiment with and master new technologies.
• Competitive compensation based on your skills and experience.
• This is a long-term collaboration based on a 2-year B2B contract, reflecting our mutual investment in your growth and success with our team.

We invite Middle/Senior Rust Developer to join our team for remote, long-term cooperation.

Gransoft develop an large-scale low-latency in-house trading engine.

Requirements:

• Strong and confident knowledge of Rust.
• 4+ years of professional software development experience, including at least 2 years of hands-on experience with Rust
• Experience with Unix-family operating systems.
• Experience with cloud platforms.
• Experience with low-latency data messaging systems (e.g. Redis)
• Experience with CI/CD solutions, Supervisor and docker.
• An high-level proficiency in English: reading, writing and speaking

• Self-motivated, highly responsive, and committed to meeting tasks and deadlines.

   

Strong plus

• Experience with Python.
• Experience with real-time and large-scale systems

• Experience with finance domain.

   

We offer:

 — Interesting and challenging project

 — Creative and friendly atmosphere

 — Our company policy is to welcome your ideas and suggestions

 — An international team of experienced developers

 — Flexible work schedule

 — 8-hour workday

More details could be given during an interview 
Please include your Telegram username in CV.

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is an innovative product company developing a smart monitoring device that combines computer vision, machine learning, and advanced camera technologies. The product analyzes sleep patterns and provides data-driven insights, helping families improve daily routines. The company is a fast-growing VC-backed startup with a strong engineering culture and real-world products used globally.

Key Requirements:
🔹 4+ years of experience in C/C++ for embedded systems;
🔹 Strong experience with Embedded Linux on ARM (Cortex-A);
🔹 (Yocto is a big plus);
🔹 Experience with Video4Linux, PulseAudio, systemd;
🔹 Ability to develop drivers and work with interfaces:;
🔹 I2C, SPI, UART, I2S;
🔹 Experience with Device Tree / OpenFirmware, IIO — advantage;
🔹 Strong debugging, cross-compilation, and toolchain knowledge;
🔹 Ability to read and work with existing codebases;
🔹 Experience with testing (unit, integration, E2E);
🔹 Strong Git skills and GitHub workflow experience;
🔹 Rust knowledge — advantage;
🔹 English – Upper-Intermediate or higher.

Will be plus:
🔹 Networking: TCP/IP, application protocols, encryption;
🔹 BLE (GATT, Advertising, Bonding);
🔹 Wi-Fi protocols and security;
🔹 Video & audio streaming and transcoding;
🔹 (H264/H265, AAC, OPUS, WebRTC, FFmpeg/GStreamer);
🔹 Microcontrollers experience;
🔹 ESP32, FreeRTOS, lwIP, NimBLE — strong plus;

What you will do:
🔹 Develop firmware components in C and Rust: drivers, BSP, networking and multimedia applications;
🔹 Analyze requirements and provide time/effort estimations;
🔹 Design features end-to-end (from idea to production);
🔹 Collaborate with Product, Mobile, and Backend teams;
🔹 Participate in technical discussions and propose solutions;
🔹 Produce technical documentation and architecture diagrams;
🔹 Plan and own development tasks;
🔹 Lead cross-functional initiatives that impact Firmware, Mobile, and Backend;

Interview stages:
🔹 Initial HR interview;
🔹 Technical interview;
🔹 Assignment & coding session;
🔹 Final interview with VP of Engineering;
🔹 Reference Check;
🔹 Offer;

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

We are building a high-performance blockchain-based gaming platform where core application logic is executed directly on Solana smart contracts.
 

The project focuses on deterministic, transparent, and verifiable on-chain mechanics, with a modern web interface layered on top.
A strong emphasis is placed on performance, security, and trust-minimized architecture, rather than traditional centralized systems.
 

This is not a typical Web3 integration role, you will work on protocol-level logic that directly defines how the platform behaves.

Requirements
 

• Experience: 2+ years of blockchain development with a strong focus on Solana. Experience with gaming platforms, on-chain logic, or protocol-level systems is a strong plus.
• Knowledge: Strong expertise in Solana, smart contracts (Rust, Anchor), and decentralized application architecture.
  Understanding of deterministic on-chain logic, state transitions, and verifiable execution models.
• Tools: Proficiency in Rust, Anchor framework, Solana SDK, and Web3.js.
  Experience integrating smart contracts with web platforms and wallet providers.
• Skills: Ability to design and implement secure, optimized, and scalable smart contracts.
  Strong analytical and problem-solving skills, with attention to edge cases and security.
• Collaboration: Experience working with cross-functional teams (frontend, backend, product) to integrate blockchain logic into complex platforms.
• Testing & Security: Familiarity with smart contract testing, performance optimization, and security best practices on Solana.
• Passion: Interest in blockchain gaming, on-chain systems, and building trust-minimized architectures.
   

Key Responsibilities
 

• Blockchain Integration: Integrate Solana-based components into the gaming platform, including wallet interactions, on-chain logic, and state management.
• Smart Contracts: Design, develop, test, and deploy core smart contracts using Rust and Anchor that define platform behavior.
• On-Chain Logic: Implement deterministic, transparent, and verifiable on-chain mechanics that serve as the foundation of the platform.
• Web3 Integration: Collaborate with frontend developers to enable seamless wallet connections, transactions, and blockchain data presentation.
• Optimization & Testing: Ensure efficient, low-latency blockchain interactions while maintaining high standards of security, reliability, and scalability.
   

What We Offer
 

• Work on a technically ambitious blockchain gaming platform alongside an experienced product and engineering team.
• Fully remote work with a flexible schedule and a focus on outcomes, not hours.
• Opportunity to deepen expertise in Solana, smart contract design, and on-chain system architecture.
• High ownership and direct influence on core protocol logic and platform architecture.
• A long-term project with a clear technical roadmap and the opportunity to grow together with the platform over time.

Rust Blockchain Developer (Solana)
Location: Remote
 Type: Full-time (exclusive focus required; no concurrent or part-time roles)

About Everstake
Everstake is one of the largest decentralized staking providers in Ukraine and a key player in the global Web3 infrastructure ecosystem. We support and operate blockchain networks at scale and actively invest in automation, performance optimization, and next-generation DeFi infrastructure.

We are expanding our engineering team and looking for a Middle+ Solana Rust Developer to work on high-load, low-latency blockchain systems.About the Role

This role requires 
• Strong Rust expertise, solid Web3 fundamentals, and a deep interest in performance, reliability, and blockchain internals.What You’ll Do
• Design and develop backend services in Rust for:
Transaction creation, simulation, validation, and lifecycle management
Block-building and transaction sequencing logic

 Build and maintain integrations with on-chain and off-chain services, including:
• DEXs, swaps, bridges, staking protocols, RPC providers
• Work with Solana-specific transaction models, signing flows, and execution constraints
• Aggregate and process on-chain and off-chain data to support:
Analytics, dashboards, monitoring, and alerting systems
• Develop and maintain APIs and internal services for observability and operational tooling
• Optimize systems for low latency, high throughput, and fault tolerance
• Ensure security and correctness, especially in cryptographic operations and key management
• Participate in code reviews, write unit and integration tests, and maintain clear documentation
• Collaborate closely with DevOps, Product, and Web3 researchers

What We’re Looking For
• 3+ years of production experience with Rust, ideally in backend or systems programming
• Strong experience building high-load backend services
• Hands-on Web3 / blockchain experience, including:
•Transaction building and signing
- RPC interaction and node communication
- Cross-chain or multi-protocol integrations
• Solana experience is highly preferred, including familiarity with its transaction model
• Solid understanding of blockchain cryptography (ed25519, secp256k1)

Practical experience with:
- Redis
- Docker
- Monitoring and observability tools (Grafana or similar)

• Strong understanding of secure, scalable backend architecture
• Ownership mindset, attention to detail, and ability to work independently in a fast-paced environment
• Clear communication skills and ability to collaborate in a distributed team (edited) 

We’re looking for a Blockchain Developer with strong hands-on experience in Solana and Rust to join our engineering team 🚀.
 

This role is focused on on-chain development, low-level protocol logic, and reliable off-chain tooling for production-grade blockchain systems.
 

If you enjoy working close to the core of Solana, care about correctness, security, and performance – this role is for you.
 

🛠️ Key Responsibilities

🔹 Design, develop, and maintain Solana programs using Rust and Anchor

🔹 Work with PDAs (seeds / bump), CPI, signer & authority patterns

🔹 Implement proper account validation, ownership checks, and custom errors

🔹 Debug and fix Solana program bugs.

🔹 Optimize programs for compute budget and transaction size limits

🔹 Write unit tests for Solana programs using Anchor tests (localnet)

🔹 Build TypeScript / Node.js integration scripts:

• Transaction construction (including v0 transactions)
• Wallet & keypair management
• .env-based configuration and RPC commitment strategies

🔹 Work with Token Standards:

• SPL Token (Tokenkeg)
• Token-2022 (transfer fees, withheld fees, metadata pointer, freeze authority, Token-2022 ATAs)

🔹 (Optional) Work with DEXs & Liquidity Pools:

• Raydium AMM / CLMM
• Meteora
• Pool creation, initial price setup, liquidity provision
• LP management (positions lifecycle, rebalancing, withdrawals)
• Pool & vault verification (Explorer, DexScreener, LP positions)

🔹 Build and maintain off-chain services:

• WebSocket subscriptions
• RPC reliability (retries, backoff, rate limits)

📋 Requirements

🔹 Strong experience with Rust and Solana on-chain development

🔹 Confident use of the Anchor framework

🔹 Solid understanding of SVM (Solana Virtual Machine) execution model

🔹 Experience with PDAs, authorities, signers, and CPI patterns

🔹 Proficiency in TypeScript / JavaScript for off-chain tooling

🔹 Experience with solana-web3.js and spl-token (Token-2022 APIs)

🔹 Ability to write Anchor unit tests and TypeScript integration scripts

🔹 Comfortable working with Node.js and backend-style workflows

🔹 Strong engineering mindset, attention to detail, and ownership

✨ Nice-to-Haves

🔹 Experience with Raydium AMM / CLMM and Meteora

🔹 Hands-on LP management experience (positions, fees, rebalancing)

🔹 Experience building on-chain/off-chain hybrid systems or bots

🔹 Familiarity with Ubuntu / Linux environments

🔹 Prior experience with production mainnet deployments

🔹 Security-aware development mindset

🔹Background workers / bots (watcher-style systems)

🧪 Testing & Quality Expectations

🔹 Anchor tests on localnet

🔹 TypeScript integration flows on devnet

🔹 Deterministic test runs with repeatable outputs

🔹 Clear separation between devnet / mainnet execution

🔐 Security & Ops Awareness

🔹 Upgrade authority awareness and best practices

🔹 Secure key & secret handling

🔹 Devnet-first execution discipline

🔹 Authority minimization (e.g. disabling mint authority when required)

🌱 Why Join Us?

🔹 Real Solana Engineering – no wrappers, no tutorials

🔹 Ownership & Responsibility – you design and ship critical logic

🔹 Modern Web3 Stack – Solana, Rust, Anchor, Token-2022

🔹 Engineering-First Culture – correctness > hype

🔹 Remote & Flexible – async-friendly, result-oriented team

🔹 Challenging Projects – protocols, infra, and real economic logic

At FuturiX Solutions, we build serious blockchain systems with a focus on correctness, security, and long-term maintainability.

If you want to work on real Solana infrastructure, not just “Web3 buzz” –

apply now and build where it matters 🌐⚙️

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

About us:
Cowchain have successfully completed 150+ 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.

Responsibilities:

• Design, develop, and deploy decentralized applications (dApps) and smart contracts on the Solana blockchain
• Collaborate with our team to define project requirements, architecture, and technical solutions
• Implement efficient and scalable solutions that leverage the unique features of the Solana blockchain
• Optimize performance and throughput of Solana-based applications through latency optimization techniques
• Stay up-to-date with the latest developments in Solana blockchain technology and incorporate new features and improvements into our projects
• Conduct code reviews, testing, and debugging to ensure the quality and reliability of our blockchain solutions
• Work closely with other team members, including front-end developers, designers, and product managers, to deliver cohesive and user-friendly solutions

Required skills:

• Proven experience as a software developer with a focus on blockchain technology
• Strong proficiency in Rust programming language, with experience in building applications on the Solana Blockchain
• Ability to use Solscan to analyze data
• Compiling, signing and sending transfer transactions
• Compiling, signing and sending swap transactions
• JIRA, gitflow

We’ll match if you have

• Independent thinking and proactive position in development
• Strong problem-solving skills with a keen ability to think analytically and approach complex challenges
• Attention to detail
• Strong tech research skills
• Excellent communication and collaboration skills, with the ability to work effectively in a team-oriented environment
• Knows how to leverage AI tools to enhance coding efficiency and productivity

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

Location: Remote
Type: Full-time (exclusive focus required; no concurrent or part-time roles)

About Everstake
Everstake is one of the largest decentralized staking providers in Ukraine and a key player in the global Web3 infrastructure ecosystem. We support and operate blockchain networks at scale and actively invest in automation, performance optimization, and next-generation DeFi infrastructure. We are expanding our engineering team and looking for a Middle+ Solana Rust Developer to work on high-load, low-latency blockchain systems.
About the Role

This role requires strong Rust expertise, solid Web3 fundamentals, and a deep interest in performance, reliability, and blockchain internals.

What You’ll Do
• Design and develop backend services in Rust for:
    - Transaction creation, simulation, validation, and lifecycle management
    -  Block-building and transaction sequencing logic
• Build and maintain integrations with on-chain and off-chain services, including:
  - DEXs, swaps, bridges, staking protocols, RPC providers
• Work with Solana-specific transaction models, signing flows, and execution constraints
• Aggregate and process on-chain and off-chain data to support:
  - Analytics, dashboards, monitoring, and alerting systems
• Develop and maintain APIs and internal services for observability and operational tooling
• Optimize systems for low latency, high throughput, and fault tolerance
• Ensure security and correctness, especially in cryptographic operations and key management
• Participate in code reviews, write unit and integration tests, and maintain clear documentation
• Collaborate closely with DevOps, Product, and Web3 researchers

What We’re Looking For
• 3+ years of production experience with Rust, ideally in backend or systems programming
• Strong experience building high-load backend services
• Hands-on Web3 / blockchain experience, including:
  - Transaction building and signing
  - RPC interaction and node communication
  - Cross-chain or multi-protocol integrations
• Solana experience is highly preferred, including familiarity with its transaction model
• Solid understanding of blockchain cryptography (ed25519, secp256k1)
• Practical experience with:
  - Redis
  - Docker
Monitoring and observability tools (Grafana or similar)
• Strong understanding of secure, scalable backend architecture
• Ownership mindset, attention to detail, and ability to work independently in a fast-paced environment
• Clear communication skills and ability to collaborate in a distributed team

Why Join Everstake?

• Join a global team passionate about blockchain technology and innovation.
• Work on industry-leading blockchain projects with high-performance infrastructure.
• Enjoy continuous learning and professional growth opportunities.
• Make a meaningful impact on the blockchain ecosystem by solving complex and rewarding challenges.

Location: LDN/WAW/HNK/SNG/TKY
Type: Freelance / Contract (B2B)
Compensation: Negotiated individually
Ownership: PnL-linked / ownership-based role

Context

A high-performance trading infrastructure is developing for low-latency, multi-asset trading.
 

Role

Work on core trading systems where:

• correctness is critical
• latency is a first-order constraint
• predictability matters more than feature velocity

This is a PnL ownership role — responsibility and compensation are aligned with outcomes.

Scope of work

• Low-latency trading components:
  • market data ingestion
  • order execution
  • internal messaging
• Performance-critical systems implemented in Rust
• End-to-end data path optimisation (from socket to decision)
• Design and implementation of:
  • lock-free / wait-free data structures
  • deterministic concurrency models
• Profiling, benchmarking, and bottleneck elimination
• Systems work close to the metal, where abstractions are explicitly questioned

Requirements (Must-have)

• Prior work on HFT, market making, or exchange infrastructure
• Excellent Rust:
  • ownership model
  • lifetimes
  • memory semantics
• Deep understanding of:
  • data structures
  • concurrency and memory ordering
  • operating systems
  • networking internals
• Practical experience with:
  • Linux performance tuning
  • multithreaded systems under sustained load
• Ability to reason about system behaviour under stress and failure conditions

Nice to have

• Kernel-bypass networking (DPDK, io_uring, AF_XDP, etc.)
• Experience with low-latency messaging
• FPGA / hardware acceleration exposure

Notes

• Contract / B2B only
• No visa sponsorship
• Position may remain open without immediate hiring

Шукаємо у команду досвідченого Rust розробника. Якщо ви маєте бажання працювати в невеликому колективі разом із сильною командою, радо розглянемо ваш відгук! Націлені на довгострокову співпрацю з винагородою, що базуватиметься на вашому досвіді роботи.

Хто ми?

Out of the Box Systems - IT компанія, що спеціалізується на створенні високопродуктивних, безпечних та надійних програмних рішень. Ми створюємо софт для різних галузей промисловості, фінансів, охорони здоров’я, ігор; цінуємо свою репутацію і тому формуємо команду з найкращих спеціалістів. 

Завантаженість: повна зайнятість — 40 год/тиждень. Робота віддалена. Оплата погодинна.

Стек технологій | вимоги:

• 1+ рік комерційного досвіду backend розробки 
• 1+ рік досвіду роботи з Rust | Node.js | Python
• Досвід роботи з однією з хмарних платформ: GCP | AWS | Azure
• Досвід роботи з базами даних SQL: PostgreSQL, SQLite, CockroachDB, AWS Aurora, Google Spanner
• Досвід з базами даних NoSQL: ElasticSearch, Redis, Cassandra або MongoDB
• Знання ORM для баз даних: sqlx, diesel, tokio-postgres
• Знання Docker
• Глибоке розуміння сервісів та API firebase
• Розуміння принципів TDD та DDD  

Бажані знання | буде плюсом:

• Знання Kubernetes 
• Досвід запуску продукту від MVP до релізу
• Практика з CI/CD: GitHub Actions, Jenkins
• Знання фреймворків для роботи з даними: datafusion, polars

Вимоги до кандидата:

Англійська мова — Intermediate +

Уміння слідувати код конвенціям

Здатність вчитися

Здатність наполегливо працювати

Критичне мислення

Витривалість

Спроможність лаконічно та чітко пояснювати свою думку

Відданість нашим проектам

Прозорість

Що отримаєте:

Віддалені умови роботи (remote)

Удосконалення навичок планування та продуктивності

Робота у вимогливому, але дружньому середовищі серед А-гравців

Регулярний зворотній зв’язок і допомога в плануванні вашого навчального процесу та кар'єрного зростання

Незалежність від місцевого ринку та долучення до глобальної економіки

Підвищення рівня володіння англійською мовою

Регулярний перегляд ЗП

Корпоративні навчання та тренінги для постійного підвищення кваліфікації

Важливо: Якщо у вас немає достатньо знань для працевлаштування за цією вакансією, проте є бажання отримати практичний досвід, ви можете взяти участь у відборі на інтернатуру.