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.

We are seeking a highly skilled Rust Developer who embodies the qualities of proactivity, independence in work, strong problem-solving skills, and an engineering mindset.

The project is based on ZK-proof technology (zero-knowledge proofs), enabling decentralized verification of user attributes without directly exposing personal data.

Responsibilities:

• Design, develop, and implement blockchain solutions using Rust, following clean code principles.
• Design product architecture according to business needs.
• Collaborate with the team to define project requirements and architecture for blockchain-based applications.
• Integrate blockchain functionality into new and existing systems and applications.
• Perform code reviews and ensure the quality and security of the developed software.
• Develop and maintain tests for components.
• Collaborate with other developers and stakeholders to identify and implement improvements.

Requirements:

• Excellent understanding of Rust’s syntax, internals, and principles of its operation. Solid understanding of blockchain technology, cryptographic principles, and decentralized systems.
• Proficiency in writing unit tests, integration tests, and end-to-end tests for Rust and blockchain components.
• Ability to write efficient and scalable database queries and manage data persistence in blockchain applications.
• Experience with relational and non-relational databases.
• Knowledge of REST principles.
• Understanding of the OOP, OOD, SOLID principles.
• Deep knowledge of standard algorithms and data structures.
• Ability to analyze and optimize the platform’s performance.
• Hands-on experience with validator nodes of any blockchain.

We offer:

• Competitive compensation
• Social package (24 working days of annual leave, 5 paid sick days)
• Flexible working hours
• Challenging projects in diverse business domains and a variety of tech stacks
• Personal development and professional growth opportunities
• Work with talented, ambitious and family-feel teams
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
• Compensation for your professional certification & support for your learning activities
• Opportunity to choose IT equipment you like
• Corporate social responsibility

We invite you, a highly motivated and results-oriented Senior Rust Engineer, to join our team full-time for ensuring solutions, as well as strengthening the product.
 

Our team has unique expertise in research, analysis, and product development. By relying on technical insights and a data-driven approach, we create disruptive future-defining innovations of the fin-tech industry that remain our basis for success 

Responsibilities

• Design the full architecture of the core platform and its supporting systems
• Make key technical decisions on the technology stack, infrastructure, and overall system design with minimal oversight
• Build the initial production-ready implementation
• Establish engineering standards, development practices, and a high bar for code quality for team members
• Contribute to hiring efforts, including technical evaluations as the team expands
• Collaborate directly with the CEO and Head of Engineering

Requirements

• 3+ years of commercial Rust development experience
• 5+ years of prior C/C++ or systems development experience
• Experience with high-performance or financial systems (exchanges, brokers, trading platforms)
• Deep knowledge of async Rust: tokio/async-std, futures
• Strong systems programming background: memory management, concurrency, low-level optimization
• Solid understanding of network protocols: TCP/UDP, WebSocket, FIX
• Experience with PostgreSQL, Redis or equivalent data stores
• Familiarity with distributed systems design principles

We offer

• 20 paid vacation days per year
• 10 paid sick leave days per year
• Public holidays as per the company’s approved Public holiday list
• Medical insurance
• Opportunity to work remotely
• Professional education budget
• Language learning budget
• Wellness budget (gym membership, sports gear and related expenses)

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.

About the Role

We are looking for an experienced Senior Rust Developer to join a high-impact project focused on building scalable, high-performance backend systems. You will work on server-side logic, APIs, and distributed systems, contributing to robust and efficient data processing solutions.

Key Responsibilities

• Design and develop backend services using Rust in production environments
• Implement and maintain REST, gRPC, and WebSocket APIs
• Build scalable, reliable server-side logic and data processing pipelines
• Optimize system performance, concurrency, and resource usage
• Ensure data integrity, validation, and consistency across services
• Work with distributed systems and microservices architectures
• Collaborate on containerized deployments (Kubernetes)
• Write clean, maintainable code and contribute to testing and quality assurance
• Participate in code reviews and work effectively within large codebases

Required Skills & Experience

• Strong hands-on experience with Rust (production level)
• Deep understanding of asynchronous programming and concurrency
• Experience designing and building APIs (REST, gRPC, WebSockets)
• Solid background in backend development and distributed systems
• Experience with performance optimization and high-load systems
• Knowledge of relational databases
• Familiarity with Kubernetes and containerized environments
• Understanding of data validation and integrity principles
• Ability to work efficiently with large and complex codebases

Candidate Profile

• Proven experience as a Senior Backend / Rust Developer
• Strong problem-solving skills and attention to detail
• Comfortable working in a distributed, remote team
• Able to align with GMT-5 working hours
• Good communication skills in English (B1+)

The Role

We are seeking a Staff Rust Engineer to strengthen our protocol team. You will design system architecture, implement complex features, and help evolve our engineering strategy and culture. As part of our team, you'll push the boundaries of cryptographic distributed computing.

Why join?

• You’ll work on unique challenges in a fast-moving space where many problems have no existing solutions.
• You'll work in a startup environment with a flexible, open work culture that prioritizes autonomy, initiative, and ownership. No micromanagement.
• Work remotely with flexible hours and PTO.

• All our code is Open Source!

   

Responsibilities:

• Design and build key components of our MPC network, the foundation software powering Sig.Network.
• Provide leadership in Rust development practices, code reviews, and architecture
• Collaborate with cryptographers, software engineers, and product owners

• Investigate and refactor performance bottlenecks to continue scaling the system

   

Key Requirements:

• Strong system architecture skills
• Extensive experience in software development, with a strong focus on Rust
• Experience with distributed systems
• Background in building security-centric projects
• Proven track record of leading engineering teams or projects
• Deep understanding of systems programming, memory management, and concurrency
• Demonstrated expertise in optimizing system performance and efficiency

• Ability to lead and implement advanced testing and performance tracking infrastructure

   

Preferred Qualifications:

• Experience implementing cryptographic protocols
• Mathematical and cryptographic (ECDSA, EDDSA) aptitude
• Experience developing MPC systems
• Experience working with indexers
• Experience writing smart contracts
• Familiarity with JS/TS
• Experience with penetration testing

Join us in shaping the future of decentralized technology and pushing the boundaries of what's possible in the multichain ecosystem.

The Role

We are seeking a Rust Engineer to strengthen our protocol team. You will design and implement complex features, work on performance and security improvements, enhance our testing and monitoring infrastructure. As part of our team, you'll push the boundaries of cryptographic distributed computing.

Why join?

• You’ll work on unique challenges in a fast-moving space where many problems have no existing solutions.
• You'll work in a startup environment with a flexible, open work culture that prioritizes autonomy, initiative, and ownership. No micromanagement.
• Work remotely with flexible hours and PTO.

• All our code is Open Source!

   

Responsibilities:

• Design and build key components of our MPC network, the foundation software powering Sig.Network.
• Help to expand our network to new chains
• Collaborate with other software engineers, product owners, and partners
• Investigate and refactor performance bottlenecks to continue scaling the system

• Improve testing infrastructure

   

Key Requirements:

• Solid experience in software development, with a strong focus on Rust
• Experience with distributed systems

• Expertise in optimizing system performance and efficiency

   

Preferred Qualifications:

• Background in building security-centric projects
• Experience implementing cryptographic protocols
• Mathematical and cryptographic (ECDSA, EDDSA) aptitude
• Experience working with indexers, smart-contracts

• Familiarity with JS/TS

   

Join us in shaping the future of decentralized technology and pushing the boundaries of what's possible in the multichain ecosystem.

About Flamingo

Flamingo is revolutionizing the Managed Service Provider (MSP) industry with an AI-driven, open-source platform for IT and security. Our goal is to empower MSPs with automation, optimization, and scalability tools to enhance their operations.

We are now expanding our system layer, developing cross-platform agents and background services written in Rust, designed to operate on Windows, macOS, and Linux environments. These agents form the backbone of our telemetry and device management capabilities across thousands of managed endpoints.

Role Overview:

As a Rust Developer, you’ll build reliable, high-performance system services and daemons that power Flamingo’s open-source infrastructure for MSPs.

You will work closely with backend engineers to design, implement, and optimize cross-platform components responsible for device management, monitoring, and secure data exchange.

Key Responsibilities:

• Develop cross-platform agents, daemons, and background services in Rust for Windows, macOS, and Linux.
• Work with low-level system APIs and platform-specific tools: Win32 API, LaunchAgents/Daemons, systemd, and more.
• Integrate services with backend infrastructure via HTTP, WebSockets, and NATS.
• Write secure, asynchronous, and performant Rust code using Tokio, Serde, and Tracing.
• Optimize real-time data processing, message handling, and network performance.
• Collaborate with backend and platform teams to ensure reliability, observability, and security across deployments.
• Contribute to our open-source projects by writing clean, documented, and community-friendly code.

Our Stack:

• Language: Rust (1.8x+)
• Core Libraries: tokio, serde, anyhow, tracing, thiserror
• Networking: reqwest / hyper (HTTP), tokio-tungstenite / warp (WebSockets), nats.rs (NATS)
• Platform APIs:
  • Windows – Win32, COM, Registry
  • macOS – LaunchAgents, Daemons, Keychain
  • Linux – systemd, journal, epoll, nix crate
• Tooling: Git, GitHub, cross-platform builds

Qualifications:

Must-Have

• Strong proficiency in Rust, including async programming and ownership concepts.
• Experience developing system-level software for at least one major OS (Windows, macOS, or Linux).
• Familiarity with platform APIs (e.g., Win32 API, systemd, macOS Daemons).
• Solid understanding of networking (TCP/UDP, WebSockets, HTTP).
• Experience with multi-threaded and asynchronous programming.
• Attention to security, performance, and code maintainability.

Nice-to-Have

• Experience with NATS, message brokers, or real-time telemetry systems.
• Experience building cross-platform agents or monitoring tools.
• Contributions to open-source projects (especially in Rust).
• Experience with C/C++ development.

Why Join Flamingo?

• High-impact role: Build the foundational layer of Flamingo’s open-source infrastructure.
• Ownership & Equity: Competitive salary plus meaningful stock options in an early-stage startup.
• Modern Tech Stack: Rust, NATS, async, cross-platform tooling, the best of systems and cloud engineering.
• Remote-first Culture: Flexibility to work from anywhere while collaborating with a world-class team.
• Mission-Driven Company: Help us redefine how MSPs operate with open-source, automation, and AI at the core.
   

N-iX is looking for Senior Rust Engineer to join the fast-growing team one our projects. 

Our client is a leading European company delivering high-performance platforms for meteorological and geospatial data. Our products handle complex datasets with distributed, scalable systems while ensuring reliability, reproducibility, and adherence to industry standards. 

As a Software Developer for the D2E Platform team, you will focus on building high-performance backend systems and orchestrating distributed data workflows. You will work with meteorological formats (GRIB, NETCDF, GEOTIFF, Zarr), geospatial transformations, and scalable infrastructure, contributing directly to the foundation of our data ecosystem.

Responsibilities:

• Develop high-performance async backend code in Rust (Tokio), managing concurrency and binary data structures.
• Optimize distributed Python workflows with Dask and orchestrate pipelines using Prefect.
• Build and maintain RESTful APIs for high-concurrency, non-blocking access to meteorological and geospatial data.
• Standardize Zarr outputs, ensuring metadata, CRS, and affine transforms are correct for downstream systems.
• Integrate multiple data sources, including radar, nowcasting, ECMWF, and GCP grids.
• Deploy and manage distributed systems on Kubernetes (K8s) and ECS, optimizing container performance and resource allocation.
• Design and extend the Dask “formula” framework for various use cases, collaborating on front-end management interfaces (Node.js).
• Implement event-driven API updates using Prefect + NATS for new data arrivals.
• Ensure high code quality through testing, code reviews, and observability practices.
• Experience with AWS.
• English level at least Upper-Intermediate. 

Requirements:

• Strong Rust expertise - at least 3 years of experience: async programming (Tokio), concurrency, binary data structures.
• Advanced Python experience with distributed processing (Dask, Xarray, Numpy).
• Proven experience building scalable, distributed systems and RESTful APIs.
• Familiarity with meteorological and geospatial data formats (GRIB, NETCDF, GEOTIFF, Zarr).
• Understanding of geospatial projections, CRS, and affine transformations.
• Strong mathematical and analytical thinking for array and matrix manipulations.
• Experience with containerized infrastructure (K8s, ECS) and CI/CD workflows.
• English level at least Upper-Intermediate. 
• Degree in Computer Science, Software Engineering, Mathematics, or related field.

Nice-to-have:

• Experience with Golang or Node.js backend development.
• Familiarity with Prefect workflow orchestration.
• Prior experience with meteorological or geospatial datasets at scale.
• Knowledge of container performance optimization, monitoring, and observability.

Technology Stack:

• Backend: Rust (Tokio), Golang, Node.js
• Python & Data: Python (Dask, Xarray, Numpy, Prefect)
• Infrastructure: Kubernetes (K8s), ECS, CI/CD pipelines
• APIs & Integration: REST APIs, event-driven architectures (Prefect + NATS)
• Data Formats: GRIB, NETCDF, GEOTIFF, Zarr

Frontend/Management Interfaces (collaboration): Node.js

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

Ось вакансія в тому ж стилі:

Chalice LTD is expanding its team and is looking for Senior Rust Developer to join a long-term project in the railway software domain.

The project is a specification-driven initiative focused on modern railway signalling systems, built around the latest ETCS and EULYNX standards. You'll be working on safety-critical infrastructure used across European railway networks — a unique opportunity to contribute to cutting-edge transport technology for 2+ years.

The Client is a railway software company specialising in the design and development of railway systems. Their core products include:

• Gateway — a simple, reliable control adapter for interlocking modernisation using the open EULYNX SCI-CC protocol.
• RaSTA — a C-language library implementing DIN EN 50159 for embedded environments.
• Testing & Simulation Software — state-of-the-art tools supporting EULYNX compliance testing and network-wide simulations.

Responsibilities

• Design and develop safety-critical software components in Rust for railway signalling systems.
• Implement and maintain features aligned with ETCS and EULYNX specifications.
• Collaborate closely with a small, focused team (2 engineers at launch) to deliver high-quality, specification-compliant solutions.
• Participate in architecture and design decisions for embedded and networked railway systems.
• Contribute to testing, validation, and documentation processes in line with industry standards.

Must-haves

• 5+ years of hands-on experience with Rust in production environments.
• Strong understanding of systems-level and embedded programming.
• Ability to work closely with formal technical specifications.
• Solid communication skills and ability to collaborate in a distributed team.

Nice-to-haves

• Experience in railway signalling systems (ETCS, EULYNX, interlocking systems).
• Familiarity with EN 50126 / EN 50128 safety process standards.
• Background in safety-critical or embedded software development.
• Knowledge of the EULYNX SCI-CC protocol or RaSTA/DIN EN 50159.

We are looking for a highly skilled C++ (Rust) Computer Vision engineer to join our mission-driven team. You will be responsible for the architectural design and implementation of CV solutions and application level development. You also will be working with Rust.

Responsibilities

• Architect CV solutions: Design and implement advanced computer vision algorithms for real-time applications. Integrate third-party computer vision and deep learning solutions.
• Application level development: Developing high-quality business logic on the edge and ensuring a seamless user experience.
• Optimize performance: Optimize end-to-end video pipelines for edge devices, ensuring low latency and high reliability.
• Hardware ownership: Own critical manufacturing and quality processes, including camera calibration, sensor quality assurance tools, and ISP (image signal processor) tuning.
• Real-world validation: Conduct and oversee test flights to validate software performance.

Core requirements & skills

• Strong background in computer science and mathematics.
• Strong development skills: Deliver clean, maintainable, and well-documented code. Experience with automated testing.
• Classical computer vision: Experience with CV and ISP algorithms: feature extraction, optical flow, noise reduction, low-light enhancement, digital video stabilization, etc.
• Object tracking: Understanding of object tracking using classical or deep learning approaches (e.g., SORT, DeepSORT).
• Edge computing & HW acceleration: Hands-on experience with embedded ` platforms such as Jetson, RPi, Rockchip, Coral, or Qualcomm.
• Upper-Intermediate level of English.

Nice-to-have skills

• Localization & navigation: Experience with visual odometry, SLAM, SfM, sensor fusion, and Kalman filters.
• Camera calibration: Understanding of camera models and calibration procedures.
• Advanced AI: Understanding of vision transformers (ViT), CNNs, RNNs, siamese networks.
• MLOps: Proficiency in the full ML lifecycle: data labeling, training, fine-tuning, quantization, deployment, benchmarking, and experiment tracking.
• UAV systems: Familiarity with flight control, control theory, state estimation, and the MAVLink protocol.
• Domain expertise: Prior experience in defence technology.

Technical stack

• Languages: Expert-level C++ or Rust. Python for research and scripting.
• Video & CV: GStreamer, OpenGL, Vulkan, OpenCL, GLSL, CUDA, V4L; OpenCV, NumPy, Eigen.
• Tools: Git, Docker, CI workflows, Yocto, ROS2.
• Deep inference: Experience with DL frameworks and inference runtimes: PyTorch, TensorFlow, ONNX, TensorRT, etc.
• Protocols & codecs: Understanding of HEVC, muxing, RTP.

We offer:

• Work from R&D office in Kyiv.
• The opportunity to contribute to the development of defense and high-tech innovations in Ukraine.
• Job type: full-time, schedule 5/2 (10–19 or 9–18).
• Official employment (gig-contract).
• 24 days of paid annual leave.
• Military service deferment for eligible employees with valid military registration documents.
• All necessary computer equipment and work-related tools.
• Office equipped with a generator and a stable internet connection.

Interview process:

1. Recruiting interview — 45 min
2. Technical interview — 1.5 hours
3. Final interview — 30 min

Please send your CV and we will come back to you within 5 working days in case your skills are suitable.

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) 

PROJECT: We are building 4connection – a modern, feature-rich messenger combining group messaging, interest-based communities and serious dating/matching features. Think Telegram meets thoughtful matchmaking – with accessibility, youth protection and strong encryption built in from the start. The Rust backend handles message routing, user matching algorithms, group management, API and the web presence. This is a client-commissioned project with a clear product vision.

REQUIREMENTS: 1+ years of experience in C, C++ or another systems-level language. Understanding of memory management (stack vs. heap, pointers, ownership concepts). Basic knowledge of network programming (TCP/IP, WebSockets, HTTP). Interest in learning Rust – we will train you, supported by AI-assisted development with Claude. Clean, readable, maintainable code is non-negotiable. Experience with Git and Linux. Good English skills (reading and writing).

NICE TO HAVE: Any Rust experience (even personal projects). Experience with async programming (Tokio, epoll, io_uring). Experience with matching algorithms or recommendation systems. Knowledge of Firebase integration. Experience with accessibility standards or youth protection regulations.

RESPONSIBILITIES: Implementing the backend architecture under direct guidance of the technical lead. Building message routing, group management and user matching systems. Implementing interest-based and dating match algorithms. Building the persistence layer and REST/WebSocket API. Integrating with Firebase and third-party services. Collaborating closely with Android and iOS developers on API design. Writing testable, documented code that any equivalent specialist can take over immediately.

WE OFFER: Fully remote work. A small, focused core team of 4 developers – no corporate overhead. Direct collaboration with an experienced technical lead who mentors rather than manages. AI-assisted development with Claude as a fixed part of the workflow. The chance to shape a backend architecture from the ground up. Clients will be released as open source – you are building something visible. Fair compensation, long-term collaboration. Nextcloud and Redmine for collaboration – open-source tooling.

Tech Stack: Rust, Tokio, Axum/Actix-Web, Firebase, Linux, Git, Redmine, Nextcloud

Запрошуємо талановитого та досвідченого Backend інженера для довгострокової співпраці в AI-команду, яка працює виключно над власними продуктами. Ви працюватимете разом із нашим Product Architect, який має понад 20 років досвіду в сфері AI — ваш професійний ріст гарантований.
 

Про наш продукт:

Ми створюємо децентралізовану AI-екосистему, де десятки AI-моделей працюють як єдина система — від генерації відео до автономних бізнес-процесів. Наше бачення — дати кожному підприємцю інструменти, які раніше були доступні тільки великим компаніям.
 

Наш ідеальний кандидат:

• Має від 5 років комерційного досвіду в backend-розробці та звик працювати в startup / product середовищі.
• Впевнено працює з Unix/Linux (деплой, логи, процеси, базова мережа, troubleshooting).
• Має сильний досвід із Databases та SQL: транзакції, індекси, оптимізація запитів, performance.
• Розуміє та будував microservices: межі сервісів, інтеграції, ретраї, консистентність, спостережуваність.
• Не прив’язаний до одного стеку: має досвід у кількох мовах із нашого стеку — Rust, TypeScript (NestJS), Python — і вміє впевнено перемикатися між ними.
• Має досвід з Kubernetes та DevOps: деплой, дебаг, Helm, CI/CD. У нас це частина щоденної роботи кожного розробника, не окрема роль.
• Мислить системно й архітектурно: розуміє обчислення та систему на теоретичному рівні, бачить наслідки рішень і вміє пояснювати “чому так”.
• Активно працює з Claude Code. Це обов’язкова частина нашого стеку.
 

Буде плюсом: розуміння crypto/блокчейн-домену (транзакції/мережі/базова безпека), досвід з Dart.
 

Ми пропонуємо:

• Повністю віддалений формат роботи.
• Конкурентну винагороду.
• Можливість напряму впливати на продукт та архітектуру в інноваційній AI-сфері.
 

Як відгукнутися:

1. Надішліть скріншот або опис вашого Claude Code сетапу — як ви його використовуєте, які MCP, який воркфлоу. Це обов’язкова частина відгуку.

2. Якщо сетап нам підходить — запросимо на текстове технічне інтерв’ю в Signal англійською з нашим Product Architect.