DevBrother

About the project:

We are working on a cutting-edge DeFi project focused on building modular infrastructure for on-chain credit. Through smart contracts, the platform enables seamless interaction between lenders, borrowers, and portfolio managers, with governance driven by a native token.

Requirements:

● 2 years of hands-on software commercial development experience;

● At least 2 years of commercial experience with JavaScript, TypeScript, NodeJS, React, and Next;

● Strong proficiency in NoSQL database;

● API integration experience;

● Expertise in writing UNIT Tests;

● Deep knowledge of Web3;

● Upper-Intermediate English.

Responsibilities:

• Design and implement scalable full-stack features using React, Next.js, and Node.js
• Collaborate with product and design teams to deliver high-quality user interfaces and experiences
• Integrate front-end components with smart contracts and on-chain data
• Optimize performance, reliability, and security of the web application
• Contribute to technical architecture and long-term platform strategy
• Write clean, maintainable, and well-tested code
• Participate in code reviews and knowledge-sharing sessions

We offer:

● Daily support for your technical and personal growth;

● Professional and very friendly team, that is always ready to help and support;

● Medical Insurance;

● Flexible working hours;

● Offices in Ukraine;

● All official holidays;

● Paid vacation and sick leaves;

● Legal services and 24/7 lawer protection;

● Tax & accounting services;

● The company provides all the necessary equipment;

● Fitness support upon request;

● English classes up to three times a week;

● The company pays 50% of the cost of refresher courses;

● Workstation space;

● Mentoring and Educational Programs;

● Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

● Advanced Bonus System.

Join a pioneering team at the forefront of building decentralized, economic, censorship-resistant computing infrastructure powered by blockchain technology. Our platform supports a wide range of use cases—from transactions and blockchain products to AI environments and high-performance streaming.

We are looking for a Senior Release Engineer to take ownership of the release lifecycle across Windows, macOS, and Linux platforms. This role is ideal for someone who thrives in fast-paced environments, understands the complexity of multi-platform application delivery, and is passionate about automation, reliability, and scalability.

As a senior team member, you’ll play a key role in defining best practices, mentoring peers, and ensuring the seamless delivery of secure, high-quality software to global users.

Responsibilities:

• Help with the full release process across Windows, macOS, and Linux, for consistency, security, and stability.
• Design, build, and optimize CI/CD pipelines for multi-platform builds and deployments.
• Oversee packaging, code signing, and distribution of desktop applications tailored to each operating system.
• Collaborate with cross-functional teams (engineering and, product) to ensure release-readiness and enforce release standards.
• Monitor and improve release performance metrics, implement rollback procedures, and ensure traceability.
• Identify, troubleshoot, and resolve platform-specific issues across the release toolchain.
• Drive automation initiatives to reduce manual steps and increase repeatability.
• Maintain comprehensive, version-controlled documentation and onboarding guides for release processes and tools.
• Stay current with release engineering best practices, tools, and compliance needs in a decentralized and regulated environment.
  
   

Requirements:

• Upper-Intermediate English proficiency or higher (written and spoken).
• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent work experience).
• 5+ years of experience in release engineering, build/release automation, or DevOps.
• Deep knowledge of cross-platform build, packaging, and deployment (Windows installers, macOS .dmg/.pkg, Linux DEB/RPM).
• Strong scripting experience with Bash, PowerShell, or Python.
• Expertise in CI/CD tools (e.g., GitHub Actions, GitLab CI, Jenkins, or similar).
• Experience with code signing, cryptographic certificates, and secure update workflows for desktop apps.
• Proficiency in Git and modern branching strategies (GitFlow, trunk-based, etc.).
• Experience in delivering products in blockchain, Web3, or security-sensitive environments is a plus.
• Demonstrated ability to work independently, lead initiatives, and mentor junior engineers.

We thank all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

🎁 We offer:

- Daily support for your technical and personal growth;

- Professional and very friendly team, that is always ready to help and support;

- Medical Insurance;

- Flexible working hours;

- Offices in Ukraine;

- All official holidays;

- Paid day offs and sick leaves;

- Legal services and 24/7 lawyer protection;

- Tax & accounting services;

- Partly Tax coverage for Ukrainian contractors;

- The company provides all the necessary equipment;

- Fitness support upon request;

- English classes up to three times a week;

- The company pays 50% of the cost of refresher courses for any employee of the company;

- Workstation space;

- Mentoring and Educational Programs;

- Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

- Advanced Bonus System.

Join a forward-thinking project at the forefront of building decentralized, economic, censorship-resistant computing infrastructure powered by blockchain technology. The solution offers reliable and scalable environments tailored for varied applications, including transactions, AI environments, blockchain products, and audio/video streaming.

We are seeking a Technical Writer who can clearly and effectively communicate complex technical concepts to both technical and non-technical audiences. In this role, you will be responsible for creating and maintaining high-quality documentation that supports the usability and understanding of our decentralized platform. You’ll work closely with engineers, product managers, and marketing teams to produce content that drives adoption, education, and community engagement.

If you have a passion for making technical systems understandable and are excited to contribute to a cutting-edge project, we’d love to hear from you. Please submit your resume along with writing samples or a portfolio showcasing relevant work.

Responsibilities:

• Create and maintain clear, concise, and user-friendly documentation for developers, users, and stakeholders.
• Write technical guides, API documentation, integration instructions, FAQs, tutorials, and release notes.
• Collaborate with product, engineering, and support teams to gather information and ensure documentation accuracy.
• Translate complex technical concepts into accessible content for different audiences, including developers and business users.
• Continuously improve content based on user feedback, product updates, and technical reviews.
• Ensure consistency in tone, formatting, and terminology across all documentation.
• Contribute to knowledge base articles and internal documentation as needed.
   

Requirements:

• At least Upper-Intermediate English proficiency or higher.
• Bachelor’s degree in Technical Communication, Computer Science, or a related field (or equivalent experience).
• 5+ years of experience in technical writing, preferably in software or blockchain/Web3 environments.
• Excellent writing, editing, and proofreading skills, with attention to detail and clarity.
• Ability to understand and explain technical topics such as APIs, SDKs, and system architectures.
• Familiarity with developer tools, Git, markdown, and content management systems.
• Comfortable working in a fast-paced, agile, and remote environment.
• Experience documenting decentralized technologies or Web3 platforms is a plus.
• Strong communication and collaboration skills, with a proactive and self-driven mindset.

We thank all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

🎁 We offer:

- Daily support for your technical and personal growth;

- Professional and very friendly team, that is always ready to help and support;

- Medical Insurance;

- Flexible working hours;

- Offices in Ukraine;

- All official holidays;

- Paid day offs and sick leaves;

- Legal services and 24/7 lawyer protection;

- Tax & accounting services;

- Partly Tax coverage for Ukrainian contractors;

- The company provides all the necessary equipment;

- Fitness support upon request;

- English classes up to three times a week;

- The company pays 50% of the cost of refresher courses for any employee of the company;

- Workstation space;

- Mentoring and Educational Programs;

- Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

- Advanced Bonus System.

Join a forward-thinking project at the forefront of building decentralized, economic, censorship-resistant computing infrastructure powered by blockchain technology. The solution offers reliable and scalable environments tailored for varied applications, including transactions, AI environments, blockchain products, and audio/video streaming.

We seek a highly skilled Front-End Developer with strong experience in React and Next.js to join our dynamic team. In this role, you will play a key part in developing and optimizing user interfaces for decentralized applications, focusing on performance, responsiveness, and seamless user experience. You’ll collaborate closely with cross-functional teams to build high-quality front-end solutions aligned with our product vision.

We'd love to hear from you if you're passionate about clean, scalable front-end code and want to contribute to a cutting-edge project. Please submit your resume along with any relevant portfolio or GitHub links.

Responsibilities:

• Build responsive, user-friendly interfaces using React and Next.js for decentralized applications.
• Collaborate with UI/UX designers and product teams to translate designs and wireframes into high-quality code.
• Optimize components for maximum performance across a range of devices and browsers.
• Integrate front-end applications with APIs and backend services.
• Write clean, maintainable, and well-documented code following best practices.
• Participate in code reviews and contribute to the continuous improvement of the development process.
  
   

Requirements:

• At least Upper-Intermediate English proficiency.
• Bachelor’s degree in Computer Science or a related field (or equivalent experience).
• 5+ years of front-end development experience with a strong focus on React and Next.js.
• Proficiency in JavaScript, TypeScript, HTML5, CSS3, and modern styling libraries (e.g., Tailwind, styled-components).
• Solid understanding of RESTful APIs and asynchronous request handling.
• Familiarity with version control systems (e.g., Git).
• Experience with SSR/SSG and performance optimization in Next.js.
• Knowledge of blockchain concepts or experience in Web3 projects is a plus.
• Strong problem-solving skills and the ability to work independently in a fast-paced, agile environment.

We thank all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

🎁 We offer:

- Daily support for your technical and personal growth;

- Professional and very friendly team, that is always ready to help and support;

- Medical Insurance;

- Flexible working hours;

- Offices in Ukraine;

- All official holidays;

- Paid day offs and sick leaves;

- Legal services and 24/7 lawyer protection;

- Tax & accounting services;

- Partly Tax coverage for Ukrainian contractors;

- The company provides all the necessary equipment;

- Fitness support upon request;

- English classes up to three times a week;

- The company pays 50% of the cost of refresher courses for any employee of the company;

- Workstation space;

- Mentoring and Educational Programs;

- Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

- Advanced Bonus System.

We seek a motivated Junior Lead Generation Specialist to support our client’s sales team in expanding their reach across the US and other markets. The ideal candidate will identify and contact potential clients, initiate conversations, and support early-stage sales activities. This role is essential in fueling the sales pipeline and contributing to business growth.

Our client offers a cutting-edge digital security platform focused on delivering a private and secure online experience. You’ll join a passionate, collaborative team working toward a safer digital future.

Key Responsibilities:

• Research and identify potential leads across target markets.
• Make outbound phone calls and send outreach messages to prospective clients (primarily business owners and decision-makers).
• Qualify leads and schedule introductory calls or demos for the sales team.
• Maintain and update lead data in the CRM system.
• Collaborate with sales and marketing teams to support ongoing campaigns and initiatives.
• Track lead generation efforts and provide regular performance updates.
   

Requirements:

• Upper-Intermediate or higher level of English (spoken and written).
• Previous experience in lead generation, telesales, customer support, or a similar client-facing role.
• Confident phone communication skills and a friendly, professional tone.
• Strong organizational skills and attention to detail.
• Familiarity with CRM systems and basic sales tools.
• A proactive, self-driven attitude and willingness to learn.
• Experience in the IT or SaaS industries is a plus.
  
   

Note: The client is based in New York, so the ability to work during US business hours is required.

We thank all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

🎁 We offer:

● Daily support for your technical and personal growth;

● Professional and very friendly team that is always ready to help and support;

● Medical Insurance;

● Flexible working hours;

● Offices in Ukraine;

● All official holidays;

● Paid vacation and sick leaves;

● Legal services and 24/7 lawyer protection;

● Tax & accounting services;

● Partly Tax coverage for Ukrainian contractors;

● The company provides all the necessary equipment;

● Fitness support upon request;

● English classes up to three times a week;

● The company pays 50% of the cost of refresher courses for any employee of the company;

● Workstation space;

● Mentoring and Educational Programs;

🔦 We seek an experienced and capable macOS developer with good JavaScript skills to assist in creating a groundbreaking security product. This solution integrates sophisticated encryption methods with a user-friendly, password-free experience, delivering file-level security unavailable from operating systems and cloud service providers.

💻 We seek engineers with a strong engineering mindset, passionate about building innovative solutions and high-quality software. Our ideal candidate works diligently to solve complex problems, appreciates a culture of learning and collaboration, and is invested in the future of security.

🧰 Requirements:

• Bachelor's degree in Computer Science or related field.
• 3+ years of experience as a Software Engineer with experience in Swift, TypeScript, JavaScript, and frameworks.
• Solid understanding of web security principles and best practices.
• Experience with browser extensions and security software products is a plus.
• Strong problem-solving skills and attention to detail.
• Excellent communication and collaboration skills in a remote work environment.

💻 Responsibilities:
 

• Collaborate with cross-functional teams to design, develop, and deploy high-quality software solutions for corporate security.
• Write clean, maintainable, and efficient code using Swift and JavaScript/TypeScript.
• Conduct code reviews to ensure code quality and adherence to coding standards.
• Work closely with product managers and UX/UI designers to implement new features and improvements.
• Identify and address performance bottlenecks, security vulnerabilities, and other issues proactively.
• Participate in the agile development process, including sprint planning, daily stand-ups, and retrospectives.

We thank you to all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

🎁 We offer:

● Daily support for your technical and personal growth;

● Professional and very friendly team, that is always ready to help and support;

● Medical Insurance;

● Flexible working hours;

● Offices in Ukraine;

● All official holidays;

● 15 days of paid day-offs;

● Legal services and 24/7 layer protection;

● Tax & accounting services;

● The company provides all the necessary equipment;

● Fitness support upon request;

● English classes up to three times a week;

● The company pays 50% of the cost of refresher courses for any employee of the company;

● Workstation space;

● Mentoring and Educational Programs;

● Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

● Advanced Bonus System.

We are looking for a Full-stack developer to assist with a client project for a trading firm launching vaults for different cryptocurrencies. The main focus is to build an AI agent management system to analyze data from different wallets and generate various analytics. 

Responsibilities:

 - Optimizing the smart wallet connection functionality.

 - Enhancing the user interface to display vaults effectively.
 - Create and integrate RESTful APIs to facilitate communication between the front-end and back-end systems.
 - Monitor and optimize application performance.
 - Conduct thorough testing (unit testing, integration testing) and debugging of applications.

Requirements:

 - Upper-Intermediate level of English or higher.

 - 2+ years of experience with JS, including React, Node.js and TypeScript.

 - Strong knowledge of crypto development, including wallet-to-site connections and transaction display.

 - Experience of using AI software development tools and strong interest in AI technologies. 

🎁 We offer:

- Daily support for your technical and personal growth;

- Professional and very friendly team, that is always ready to help and support;

- Medical Insurance;

- Flexible working hours;

- Offices in Ukraine and Poland;

- All official holidays;

- Paid vacation;

- Legal services and 24/7 lawyer protection;

- Tax & accounting services;

- Partly Tax coverage for Ukrainian contractors;

- The company provides all the necessary equipment;

- Fitness support upon request;

- English classes up to three times a week;

- The company pays 50% of the cost of refresher courses for any employee of the company;

- Workstation space;

- Mentoring and Educational Programs;

- Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

- Advanced Bonus System.

🗣️ We are looking for a motivated QA engineer with automation and manual testing experience to join a stable security product based in New York. The product aims to provide users with a secure and private online experience. We are a close-knit team of passionate individuals who thrive on creativity and collaboration. As we continue to grow, we seek talented individuals to join us in building a safer digital future.

We seek a professional with a strong motivation to create innovative solutions and high-quality software. 

The team works on enhancing the product's security and privacy features, with a seamless and secure online experience for our users.

Responsibilities:

• Perform thorough testing of our SaaS application using RainforestQA and other testing tools and frameworks to identify bugs, defects, and usability issues.
• Create and execute detailed test plans and test cases for all aspects of the software are thoroughly evaluated.
• Collaborate closely with the development team to communicate bugs and issues effectively and ensure timely resolution.
• Continuously monitor and report on the progress of testing activities, including test coverage, test results, and overall quality metrics.
• Maintain and update test cases in RainforestQA.
• Adapt quickly to changing priorities and deadlines in a fast-paced environment.

Requirements:

• At least an Upper-Intermediate level of English
• 3+ years of experience in quality assurance, software testing, or a related role.
• Experience with JavaScript and Cypress.
• Familiarity with Rainforest QA or other QA automation tools.
• Strong understanding of software development lifecycles, testing methodologies, and best practices.
• Excellent analytical and problem-solving skills with a keen attention to detail.
• Ability to work independently and as part of a collaborative team.
• Effective communication skills, with the ability to articulate technical concepts to technical and non-technical stakeholders.
• Experience with Agile development methodologies is a plus.

👉 We thank you to all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to numerous applicants. Thank you for your understanding.

🎁 We offer:

- Daily support for your technical and personal growth;

- Professional and very friendly team, that is always ready to help and support;

- Medical Insurance;

- Flexible working hours;

- Offices in Ukraine and Poland;

- All official holidays;

- Paid vacation and sick leaves;

- Legal services and 24/7 lawyer protection;

- Tax & accounting services;

- The company is ready to provide all the necessary equipment;

- English classes up to three times a week;

- Workstation space;

- Mentoring and Educational Programs;

- Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

- Advanced Bonus System.

🔦 We seek an experienced and capable full-stack developer to assist in creating a groundbreaking security product. This solution integrates sophisticated encryption methods with a user-friendly, password-free experience, delivering file-level security that is not available from operating systems and cloud service providers.

💻 We are seeking engineers with a strong engineering mindset who are passionate about building innovative solutions and high-quality software. Our ideal candidate is one who works diligently to solve complex problems, appreciates a culture of learning and collaboration, and is invested in the future of security.

🧰 Requirements:

- Bachelor's degree in Computer Science, related field, or equivalent practical experience.

- 3+ experience as a Software Engineer with experience in TypeScript, Node.js, Fastify and React.

- Experience with the .NET stack will be a plus.

- Solid understanding of web security principles and best practices.

- Experience with browser extensions and security software products is a plus.

- Strong problem-solving skills and attention to detail.

- Excellent communication and collaboration skills in a remote work environment.

🗣️ Responsibilities:

- Collaborate with cross-functional teams to design, develop, and deploy high-quality software solutions for browser security.

- Write clean, maintainable, and efficient code using TypeScript, Node.js, and React.

- Conduct code reviews to ensure code quality and adherence to coding standards.

- Work closely with product managers and UX/UI designers to implement new features and improvements.

- Identify and address performance bottlenecks, security vulnerabilities, and other issues proactively.

- Participate in the agile development process, including sprint planning, daily stand-ups, and retrospectives.

👉 We thank you to all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to numerous applicants. Thank you for your understanding.

🎁 We offer:

● Daily support for your technical and personal growth;

● Professional and very friendly team, that is always ready to help and support;

● Flexible working hours;

● All official holidays;

● Paid vacation and sick leaves;

● Legal services and 24/7 lawyer protection;

● Tax & accounting services;

● The company provides all the necessary equipment;

● Fitness support upon request;

● English classes up to three times a week;

● The company pays up to 50% of the cost of refresher courses for any employee of the company;

● Workstation space;

● Mentoring and Educational Programs;

● Regular Activities on a Corporate level (Team Buildings, Sports Events, Table Games, Tech Events);

● Advanced Bonus System.

Primary focus will be to support content creation and drive brand visibility across our social media channels, especially LinkedIn. 

The product aims to provide users with a secure and private online experience. We are a close-knit team of passionate individuals who thrive on creativity and collaboration. As we continue to grow, we seek talented individuals to join us in building a safer digital future.

The work will increase brand recognition, raise product awareness, and ultimately support sales growth. This is a great opportunity to gain hands-on experience in B2B cybersecurity marketing and help shape the voice of a growing brand.  

Key Responsibilities: 

- Create and publish engaging LinkedIn content that builds brand awareness and supports lead generation.  

- Support the development of marketing content, including blogs, social graphics, one-pagers, infographics, and email campaigns.  

- Collaborate with product and sales teams to translate cybersecurity topics into clear, compelling, and digestible content.  

- Maintain and execute a consistent content calendar aligned with product launches, campaigns, and market trends.  

- Monitor social media performance and engagement metrics to refine strategies.  

- Repurpose long-form content into social-ready assets to maximize reach and impact.  

- Contribute ideas for creative campaigns that generate visibility and engagement.  

Requirements:  

- Upper-Intermediate level of English or higher.

- Experience in a content, marketing, or social media role.  

- Excellent written and verbal communication skills with a strong sense of tone and brand.  

- Familiarity with LinkedIn and general B2B social best practices.  

- Passion for technology and interest in cybersecurity or enterprise SaaS.  

- Ability to work independently and manage multiple priorities in a fast-paced environment.  

- Experience with tools like HubSpot is a plus.  

Bonus Points For: 

- Cybersecurity work for the MSP space.  

- Graphic design, video editing, or basic HTML/CSS skills.  

- Understanding of SEO and content performance tracking.

We thank all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

🎁 We offer:

● Daily support for your technical and personal growth;

● Professional and very friendly team, that is always ready to help and support;

● Medical Insurance;

● Flexible working hours;

● Offices in Ukraine and Poland;

● All official holidays;

● Paid vacation and sick leaves;

● Legal services and 24/7 lawyer protection;

● Tax & accounting services;

● Partly Tax coverage for Ukrainian contractors;

● The company provides all the necessary equipment;

● Fitness support upon request;

● English classes up to three times a week;

● The company pays up to 50% of the cost of refresher courses for any employee of the company;

● Workstation space;

● Mentoring and Educational Programs;