DevBrother

We are building the next generation of AI Agentic Marketing Solutions specifically for the Game Development industry. We don’t just build simple chatbots; we build autonomous agents that plan, execute, and optimize User Acquisition (UA) and marketing campaigns for gaming studios.

We are looking for a versatile Product Engineer based in Europe to join our high-performance team and build the end-to-end features that power our agents.

The Role

You will be the bridge between our AI logic and the user experience. You will work across the entire stack—from developing AI agents to building the FastAPI endpoints that drive our agents that our clients use to manage their AI marketing teams.

Key Responsibilities

• Agents Development: Build and maintain AI agents and features from the database level up to the UI.
• Agent Integration: Work closely with our AI team to integrate LangGraph/LangChain workflows into the platform.
• API Design: Develop and optimize high-performance APIs using Python (FastAPI).

Requirements

• AI Expertise: Proven track record of building and scaling AI-powered products. You know the difference between a tutorial and a production-grade agentic system. While you don't need to be an AI researcher, you should have experience with LLM integration and agentic frameworks. 
• Engineering Mastery: 5+ years of experience in software engineering. Solid Python skills with a focus on asynchronous programming (FastAPI, AsyncIO). Familiarity with PostgreSQL, Redis, and modern CI/CD practices. 
• Agentic Frameworks: Deep experience with LangGraph, LangChain, and/or similar libraries.
• Product Mindset: You care about the user experience and understand how your code impacts the business goals of our GameDev clients. 

What We Offer

• High Impact: No bureaucracy. Your code shapes the future of GameDev marketing.
• Elite Team: Work alongside senior experts who value "Delivery in 1 Second" and relentless improvement.
• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kyiv, Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement.

We are building the next generation of AI Agentic Marketing Solutions specifically for the Game Development industry. We don’t just build simple chatbots; we build autonomous agents that plan, execute, and optimize User Acquisition (UA) and marketing campaigns for gaming studios.

We are looking for an AI Jedi—a top-tier engineer who lives and breathes agentic orchestration and can solve the most complex problems in the LLM space.

The Role

This is a high-impact, individual contributor role for a master of AI engineering. You will be responsible for the "brain" of our platform. We need someone who can move beyond basic RAG and prompt engineering to build sophisticated, self-correcting, and autonomous agentic workflows that deliver results for the world’s biggest gaming studios.

Key Responsibilities

• Architecting Autonomy: Design and implement high-level agentic orchestration using LangGraph or custom state-machine frameworks.
• AI Excellence: Solve complex challenges related to agent memory, long-term planning, and multi-agent collaboration.
• Performance & Reliability: Build robust evaluation loops and guardrails to ensure our agents perform reliably in production environments.
• Innovation: Stay at the absolute bleeding edge of AI research, quickly turning new papers and techniques into production-ready features.

Requirements

• Deep AI Expertise: Proven track record of building and scaling AI-powered products. You know the difference between a tutorial and a production-grade agentic system.
• Python Mastery: Expert-level Python skills with a focus on asynchronous programming (FastAPI, AsyncIO).
• Agentic Frameworks: Deep experience with LangGraph, LangChain, and/or similar libraries.
• Infrastructure Savvy: Comfortable with Vector Databases, high-scale data pipelines, and cloud infrastructure (AWS/K8s).
• Startup DNA: You are a "Builder." You value speed, pragmatism, and shipping code that works over theoretical perfection.

What We Offer

• High Impact: No bureaucracy. Your code shapes the future of GameDev marketing.
• Equity & Growth: A fast-track path to a key leadership role with a stake in the company’s success.
• Elite Team: Work alongside senior experts who value "Delivery in 1 Second" and relentless improvement.
• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kyiv, Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement.

We are looking for a highly motivated Trainee Full-stack Developer to join our team. You will work on an innovative project focused on browser security and privacy tools. This is a unique chance to kickstart your career in a product-led environment, learning from senior engineers while contributing to real-world security solutions.

Requirements:

• Bachelor's degree in Computer Science, or related field.
• Solid foundational knowledge of JavaScript (ES6+).
• Basic experience or projects built with React.js.
• Understanding of Node.js and backend principles (REST APIs).
• Familiarity with TypeScript is a significant plus, but not mandatory.
• Willingness to learn new frameworks (e.g., Fastify) and security-focused patterns.
• English Proficiency: Strong spoken English is mandatory — level: Minimum B1 (Intermediate), ideally B2 (Upper-Intermediate). You must be able to comfortably discuss technical tasks and participate in team meetings.

What you will do:

• Develop and maintain web applications using React and Node.js.
• Collaborate with the team on building secure browser extension features.
• Participate in code reviews and learn to write production-grade code.
• Engage in daily stand-ups and agile processes.

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:

• Opportunity to join a prospective product team and work on a cutting-edge solution in the security domain.
• Competitive compensation during the internship period.
• Direct mentorship from experienced software engineers.
• A flat management structure with no unnecessary bureaucracy.

We are looking for a skilled and mature Software Engineer to join a stable startup based in New York dedicated to developing cutting-edge browser security solutions. Our mission is 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 are seeking talented individuals to join us in building a safer digital future.

We are seeking engineers who are 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.

You will play a crucial role in enhancing the security and privacy features of the product, ensuring a seamless and protected online experience for our users.

Requirements:

• Bachelor's degree in Computer Science, related field, or equivalent practical experience.
• 2+ experience as a Software Engineer with experience in TypeScript, Fastify, NodeJS, and React.
• 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 a large number of applicants. Thank you for your understanding.

We Offer:

• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement.

About project

The product is redefining post-acute care by replacing fragmented, manual workflows with intelligent AI-driven automation. We help healthcare providers manage patients, not paperwork, by delivering robust throughput and intelligence across clinical, financial, and compliance operations. We are built by experts from Stanford Medicine, UCLA Health, and Amazon.

The Role: 

We are looking for a product-focused Full-Stack Engineer to join our team. You will be a key player in building our system, which involves developing sophisticated APIs that interface with Electronic Medical Records (EMR) and building advanced web-scraping tools for healthcare referral platforms.

This isn't just a coding role; we are looking for an engineer who understands the "Why" behind the "What." You will work in a high-efficiency environment where AI tools (Cursor, Gemini, Claude Code) are part of the daily workflow to maximize output and quality.

Technical Stack

• Frontend: React (Proficient)
• Backend: Go (Primary/Preferred) or Node.js
• Languages: TypeScript (Strongly Preferred)
• Workflows & Scraping: Playwright, Temporal (Airflow experience is a plus)
• Data: EMR website scraping, PDF parsing, and data point extraction
• Architecture: System Design focus; Cloud-native development

What You’ll Do

• Automate Workflows: Design systems that remove data access bottlenecks and automate clinical data entry.
• Build the "Injection Track": Develop and maintain APIs that reliably scrape and sync data from EMRs and referral platforms in real-time.
• Collaborate via Design: Participate in "1s design discussions" to align on architecture before implementation.
• Leverage AI: Use modern AI-assisted development tools (Cursor, Claude Code, LLM wrappers) to build faster and smarter.
• Take Ownership: Move beyond task execution to ownership—meaning you don't just follow instructions; you understand the business context and ensure the solution fits the need.

What We’re Looking For

• 3+ years of experience: You have a solid foundation in full-stack development and have worked on product-level code.
• Communication & Alignment: You understand that "going away and building the wrong thing" is a failure. You prioritize constant "connect" and alignment with the team.
• Problem Solvers: You are comfortable with the "messy" side of data—parsing PDFs, scraping complex websites, and ensuring data reliability.
• AI-Forward: You are already using AI coding tools to 2x your productivity.

Our Culture & Philosophy

• Context is King: We provide clear business requirements and motivation. We expect you to understand the "Why" to build better "Whats."
• Execution Levels: We expect our engineers to operate at an "I do" level—owning the solution from design to deployment.
• Efficient Growth: We value unique perspectives and a proactive work ethic.

We Offer:

• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kyiv, Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement.

About the Company

Our client is a financial technology services provider dedicated to expanding global access to digital assets by building innovative solutions in the trading ecosystem. Their products provide exchanges, liquidity solutions, and enterprise-grade integrations for clients worldwide. We are looking for a skilled Middle Backend Software Engineer who not only writes code but also builds products with an "AI-first" mindset.

In this role, you will be a core member of our engineering team, translating complex financial and crypto concepts into intuitive, high-performance applications. You will thrive on solving technical puzzles and collaborating in a fast-paced, rapidly growing environment.

What You'll Do

You'll be a key builder in our development lifecycle, focusing on product-led engineering where AI is a central component of both the product and your workflow. Your main responsibilities will include:

• Core Product Development: Develop, test, and maintain user-facing features for our exchange and liquidity platforms using TypeScript and Nest.js.
• AI Integration: Implement and optimize AI-driven features within the product to enhance user experience and operational efficiency.
• Collaboration: Work closely with product owners, UI/UX designers, and backend engineers to translate requirements into fully functional, enterprise-grade applications.
• Code Quality & AI Co-piloting: Write clean, testable code while leveraging AI tools to supercharge your productivity and maintain high-quality standards.
• Performance Optimization: Optimize components for maximum performance and responsiveness, especially for data-heavy and real-time crypto interfaces.

Your AI-Native Advantage

We believe AI is a powerful co-pilot for modern development. We're looking for someone who:

• Is eager to use AI to supercharge their daily work and development speed.
• Constantly explores new ways to integrate AI/LLM capabilities into the product lifecycle.

Who You Are

You are a proactive, detail-oriented, and adaptable developer who thrives in a fast-paced environment. You are:

• A Clear Communicator: You can effectively articulate technical decisions and AI-driven solutions to both technical and non-technical teammates.
• A Problem-Solver: You are self-motivated, resilient, and enjoy tackling complex technical puzzles to build robust solutions.
• A Tech Visionary: You have a curious mindset with a strong interest in (or passion for) blockchain, cryptocurrency, and AI technology.
• A Team Player: You value collaboration and feedback, contributing positively to the team's shared goals.

Qualifications

• English: Upper-Intermediate level or higher (both written and verbal).
• Experience: 2+ years of professional software development experience, with a strong focus on building products.
• Technical Stack:
  • Proficiency in Node.js/Nest and TypeScript.
  • Experience with MySQL, Redis and AWS.
  • Familiarity with RESTful APIs and real-time data communication (WebSockets).
  • Experience with React/Next. 
  • Proficient with Git version control and collaborative workflows.
• Education: A Bachelor's degree in Computer Science or a related field (or equivalent practical experience).

Bonus Points:

• Experience working in Fintech, Trading, Blockchain, or Crypto.
• Demonstrated experience in building features that utilize AI/LLM APIs.

We Offer

• Health & Wellness: Medical Insurance in Ukraine and Multisport program in Poland.
• Flexibility: Flexible working hours and offices in Ukraine and Poland (Wroclaw).
• Career Growth: Mentoring, educational programs, and English classes up to three times a week.
• Work-Life Balance: Paid vacation, sick leaves, and all official holidays.
• Support: All necessary equipment provided and tax/accounting services for Ukrainian contractors.
• Culture: Regular corporate activities (parties, team buildings, sports events) and an advanced bonus system.

About the Company

Our client is a financial technology services provider dedicated to expanding global access to digital assets by building innovative solutions in the cryptocurrency ecosystem. Their products provide exchanges, liquidity solutions, and enterprise-grade integrations for clients worldwide. Specialized in building Crypto, Web3, and various White-Label Solutions, we are looking for an enthusiastic Junior UI/UX Designer to join our engineering team.

In this role, you will have an excellent opportunity to gain hands-on experience in a rapidly growing organization. You will work alongside senior designers and engineers to translate complex financial concepts into intuitive web applications.

As a Designer, you will be a contributor to our development lifecycle. Your main responsibilities will include:

• Design Support: Creating user-friendly interfaces and functional mockups for our exchange and liquidity platforms.
• Prototyping: Help translate requirements and mockups into fully functional, enterprise-grade application designs.
• Collaboration: Work closely with a UI/UX team, product owners, and developers to ensure design consistency.
• Optimization: Optimize components for responsiveness across browsers and devices, with a focus on data-heavy interfaces.
• Team Participation: Actively participate in design reviews, stand-ups, and sprint planning to maintain high-quality standards and share knowledge.

Your AI & Automation Advantage

AI is a powerful co-pilot for modern design. We're looking for someone eager to use AI to supercharge their workflow—from generating assets to streamlining UX research and prototyping.

Who You Are

You are a proactive, detail-oriented, and adaptable designer who thrives in a fast-paced environment. You are:

• A Clear Communicator: You can effectively articulate design decisions and challenges to both technical teammates and non-technical stakeholders.
• A Problem-Solver: You are self-motivated, resilient, and enjoy tackling technical puzzles.
• A Tech Enthusiast: You have a curious mindset with a strong interest in (or passion for) blockchain, cryptocurrency, and financial technology.
• A Team Player: You value feedback and contribute positively to the team's shared goals and culture.

Qualifications

• English: Upper-Intermediate level or higher (both written and verbal).
• Experience: 1+ year of professional experience or a strong portfolio demonstrating UI/UX principles (ideally in fintech or complex web apps).
• Core Technical Skills:
  • Proficiency in modern design tools (e.g., Figma, Adobe XD).
  • Basic understanding of responsive design and grid systems.
  • Familiarity with collaborative workflows and version control concepts.
• Education: A Bachelor's degree in Design, Computer Science, or a related field (or equivalent practical experience).

Bonus Points:

• Knowledge of fintech, blockchain, or cryptocurrency environments.

We Offer

• Flexible Environment: Remote/Hybrid options with offices in Ukraine and Poland (Wroclaw) and flexible working hours.
• Healthcare: Medical Insurance in Ukraine and Multisport program in Poland.
• Support: Tax and accounting services for Ukrainian contractors.
• Growth: English classes up to three times a week, plus mentoring and educational programs.
• Culture: Regular corporate-level activities (parties, team buildings, tech events) and an advanced bonus system.

We are looking for a motivated software engineer to join our engineering team. In this role, you will work across our entire stack to build products that are changing how users interact with the web safely. This is a perfect opportunity for an experienced developer ready to take on greater ownership and work with a modern, specialized tech stack.

The Role

You will be an integral part of our agile team, contributing to everything from our browser extension logic to our backend data pipelines. You’ll be expected to write clean, maintainable code, participate in design discussions, and help us scale our security-focused solutions.

Responsibilities:

• Feature Development: Design and implement product features across the full stack (React, Node.js, and C#).
• Code Excellence: Contribute to and uphold our code quality standards through thorough testing and thoughtful peer reviews.
• Rapid Problem Solving: Debug complex issues and ship fixes quickly to maintain a seamless user experience.
• Collaborative Engineering: Partner with teammates to brainstorm and solve architectural challenges creatively.
• Codebase Evolution: Take ownership of extending and optimizing our existing codebase as we add new capabilities.

Qualifications

• Experience: 2–4 years of professional software development experience.
• Education: BS/BA in Computer Science or a related field, or equivalent practical experience.
• Core Stack: Proven proficiency in TypeScript, Node.js, and React. 
• C# / .NET: Familiarity with the .NET ecosystem for backend services.
• Databases: Experience working with SQL databases, ideally PostgreSQL.
• Cloud & Tools: Comfort working in AWS environments and familiarity with Git and Jira.
• Communication: Strong verbal and written communication skills with a collaborative mindset.
• Drive: Self-motivated and capable of hitting the ground running in a fast-paced environment.

Our Tech Stack

We lean into modern tools to build fast and stay secure:

TypeScript · Node.js · React · PostgreSQL · AWS · Plasmo · C#/.NET

​Nice to Have

If you have experience in any of the following, you'll have a head start:

• ​Browser Extensions: Experience building or maintaining extensions (especially using frameworks like Plasmo).
• ​​Cybersecurity Knowledge: Interest or experience in data loss prevention (DLP), DNS security, or credentials analysis.
• ​Startup Savvy: Experience working in a startup or a similarly fast-moving environment.
• Design Literacy: Familiarity with Figma to help translate designs into functional code.

🎁 We Offer

• Growth: Daily support for your technical and personal growth through mentoring and educational programs.
• Team Culture: A professional and friendly environment where help is always available.
• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kyiv, Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement.