Lead/Senior Full-Stack Software Engineer with AI Expertise

N-iX brings together over 2,400 technology professionals across more than 40 countries. Since 2002, the company has delivered solutions in cloud computing, data analytics, AI, embedded software, and IoT for a range of clients, including industry leaders and Fortune 500 companies. This role supports a client operating Europe's largest online car marketplace, which serves over 30 million users each month in 18 countries. The client is developing a new Agentic Software Delivery platform to automate engineering tasks at scale. The initial priority is automating the software development life cycle (SDLC), aiming for 10–20% of JIRA stories to move through the autonomous delivery system within a year. Future plans include expanding the platform's capabilities. Role overview N-iX is looking for a Lead or Senior Full-Stack Software Engineer with a strong background in AI. The position calls for someone proactive and self-motivated, who can navigate ambiguity and take initiative without waiting for detailed instructions. Ownership and independent progress are key traits for success in this role. What you will do Design and build features for the Agentic Software Delivery platform, focusing on AI-powered automation. Work with internal delivery teams (about 10% of your time) to understand their workflows, identify pain points in the SDLC, and share feedback to improve the platform. This includes technical discovery and direct developer conversations. Support the rollout of the platform by mentoring others and helping teams adopt and use the new tools effectively. Who succeeds here Engineers who are comfortable with minimal direction and enjoy shaping projects in evolving environments. Those who bring technical curiosity, strong communication skills, and a willingness to learn from peers. Location This position is open to candidates based in Europe or Ukraine.

Join us at Superhuman, where we embrace a vibrant hybrid work model that balances focused individual work with collaborative in-person sessions. This unique approach cultivates trust, sparks innovation, and strengthens our team culture.About SuperhumanSuperhuman, the parent company of Grammarly, is an AI-driven productivity platform dedicated to unlocking everyone's superhuman potential. We integrate AI seamlessly into the tools people already use, connecting with over 1 million applications and websites. Our product suite includes Grammarly's writing assistance, Coda's collaborative workspaces, Mail's inbox management, and Go, our proactive AI assistant that understands context and provides automatic help. Since our founding in 2009, Superhuman has empowered over 40 million users across 50,000 organizations and 3,000 educational institutions worldwide, helping them eliminate busywork and concentrate on what truly matters. Discover more at superhuman.com and explore our values here.The OpportunityTo meet our ambitious objectives, we are seeking talented Full-Stack Software Engineers to be a part of our engineering teams.As an engineer at Superhuman, you will have the freedom to innovate and drive breakthroughs that will influence our product roadmap. Our technical challenges are evolving rapidly as we scale our interfaces, algorithms, and infrastructure. For more insights, check out our technical blog.In this role, you will take on a pivotal position in enhancing user acquisition and conversion. You will develop innovative features and infrastructure that highlight our product's value, encouraging millions of users to make Superhuman their indispensable writing companion. We welcome you to share your knowledge, experiences, and aspirations with us to ensure the best fit for our team. What is your superpower?Your responsibilities will include:Commencing code development and deployment in your first week, delivering impactful features within your initial months.Building and maintaining production services with high activity on the back-end while crafting rich user interfaces on the front-end.Aiming for high availability for both consumer and enterprise customers.Gaining expertise in infrastructure as code (IaC).Collaborating with internal teams such as Core, Enterprise, Trust, and Data to create delightful user experiences.

N-iX is seeking a talented Senior Full Stack Software Engineer to become a vital member of our rapidly expanding team working on an innovative Online Learning Platform.Key Responsibilities:Architect, develop, and sustain high-performance web applications utilizing C# and Vue.js.Engage with product and engineering management, stakeholders, and cross-functional teams to define, prioritize, and implement valuable features for our users.Produce clean, maintainable, and testable code.Guide and mentor junior developers on coding standards, architectural principles, and industry best practices.

We are seeking a talented Senior Full-Stack .NET Engineer who thrives in fast-paced environments and can adapt to continuous business transformations. The ideal candidate will navigate shifting requirements, evolving strategies, and the integration of emerging technologies. About the Client: Established in 1948, Fluke Corporation is a prominent US-based company employing over 2,500 personnel. Renowned as a global leader in compact, professional electronic testing tools and software solutions for measurement and condition monitoring, Fluke plays a pivotal role in various industries. We are partnering to create solutions for mobile operations, control, and maintenance of automated systems. Our products are crucial in sectors where minimizing downtime is vital, including airports, warehouses, distribution centers, manufacturing operations, power plants, water treatment facilities, and renewable energy farms. Our solutions are utilized by industry leaders such as Honda North America, Toyota UK, Volkswagen, Boston Logan Airport, and numerous airports across Europe. X5 eMaint is a state-of-the-art CMMS software designed to centralize maintenance data, streamline processes, and automate tasks, enhancing operational efficiency. This software optimizes the utilization, availability, and lifespan of equipment, machinery, fleets, and facilities.

Superhuman, part of Grammarly, builds AI productivity tools used by over 40 million people in 50,000 organizations worldwide. The platform integrates with a wide range of applications, offering features such as advanced writing assistance, collaborative workspaces, and a proactive AI assistant. Founded in 2009, Superhuman focuses on helping users minimize busywork and concentrate on what matters most. More details about the company and its values can be found at superhuman.com and the Superhuman values page. This Full-Stack Software Engineer role is open to candidates based in Ukraine and is fully remote. Superhuman supports a hybrid work model, combining focused remote work with opportunities for in-person collaboration to foster trust and innovation. Role overview Full-Stack Engineers at Superhuman play a key role in building features and infrastructure that drive user growth and highlight the platform’s value. The work involves both front-end and back-end development, supporting a product that serves a large and diverse user base. Engineers are encouraged to contribute ideas and experience, helping shape the team and product direction. For more on Superhuman’s technical work, visit the engineering blog. What you will do Start coding and shipping production-ready features within your first week, aiming to deliver impactful results in the first few months. Develop and maintain back-end services that handle high call volumes, as well as create engaging front-end user interfaces. Support high availability for both consumer and enterprise customers. Build expertise in infrastructure as code (IaC) practices. Superhuman values engineers who bring their unique strengths to the team and encourages sharing insights and aspirations to ensure a strong fit.

Location: Fully RemoteStart Date: As Soon As PossibleLanguages Required: EnglishAbout the RoleJoin pragmatike as a Lead Full Stack Engineer for a dynamic and rapidly expanding AI and trading startup. We are creating an innovative orchestration protocol that seamlessly integrates various trading dimensions into a single, AI-driven platform, empowering users to trade effortlessly across both crypto and traditional financial markets.Our groundbreaking technology leverages autonomous AI agents that operate around the clock, eliminating emotional biases and enhancing trade execution efficiency. Having successfully managed over $500,000 in assets during our beta phase, we are poised for significant growth as we scale our platform to support a multitude of agents across diverse trading environments.We seek a Senior Full Stack Engineer (React / Node / Next.js) to enhance and expand our product experience and core application as we transition from initial traction to institutional-scale operations.Your ResponsibilitiesDesign and implement scalable, production-ready web applications utilizing React and Next.js.Develop reliable backend services and APIs through Node.js.Architect comprehensive features spanning frontend, backend, and database layers.Create real-time dashboards for monitoring trading performance, agent activity, and analytics.Establish secure authentication, authorization, and role-based access management systems.Enhance frontend performance, user experience, and state management.Collaborate closely with AI, backend, and infrastructure teams to integrate trading agents and execution systems.Maintain code quality through rigorous testing, CI/CD practices, and adherence to engineering best practices.Contribute to architectural strategy and long-term product scalability initiatives.Influence product direction in a fast-paced, high-ownership environment.QualificationsA minimum of 5 years of experience in Full Stack Engineering.Proficient in React and Next.js (SSR, routing, performance optimization).Strong backend development skills with Node.js.Experience designing and consuming REST or WebSocket APIs.

Join our dynamic team as a Senior Full Stack Engineer where you will engage in exciting projects that enhance the digital landscape. Your expertise in both front-end and back-end development will play a critical role in delivering high-quality software solutions. Collaborate with a team of talented professionals, leveraging the latest technologies to drive innovation and efficiency.

Join our dynamic and innovative team as a Senior Full Stack Software Engineer. At nix, we are committed to delivering exceptional educational experiences to students worldwide. In this pivotal role, you will collaborate with a diverse team of engineers and experienced engineering managers, working together to create scalable and reliable web applications.Your responsibilities will include designing, developing, and maintaining applications using C# and Vue.js, while also collaborating with product and engineering managers to prioritize and implement features that add value to our users.

Join SKELAR, a pioneering Ukrainian venture builder that is shaping the future of tech businesses on a global scale. We collaborate with co-founders to assemble formidable teams that excel in international markets.Currently, SKELAR operates multiple businesses across various sectors, from EdTech to marketplaces. Our companies consistently rank among Ukraine's top startups and product firms, frequently appearing in prestigious publications like TechCrunch and Wired.With a robust team of over 1,000 professionals, we pride ourselves on our exceptional expertise and ambitious goals. Our talent is our most valuable asset, and we strive to build our businesses alongside the best in the industry.We are excited to invite applications for the role of Senior Product Engineer (AI-Native Full-Stack) within our R&D Department.At Brighterly, we are redefining online education for children by creating an ecosystem that serves as the ultimate destination for learning mathematics. Our mission is to develop the next EdTech unicorn in a market valued at $130 billion.Technology stack: https://skelar-tech.github.io/Brighterly/Key challenges include:Rapid Prototyping: Build functional MVPs (Web & Mobile) from scratch within short sprints.AI Integration: Implement LLM, agent architectures, and RAG systems into our products.Fullstack Delivery: Independently develop features from database schema to final animations on the frontend.Cross-platform Experimentation: Create mobile applications using AI tools on Flutter/React Native to validate market hypotheses.Architecture for Speed: Design flexible architecture that allows for rapid shifts in development direction without pain points.What we value:Senior Level Mindset: You understand how scalable systems are built, even those generated by AI.AI-Fluency: Familiarity with tools like Claude, Cursor, Windsurf, and v0.dev is essential.

About Softermii:Softermii is a leading outsourcing and outstaffing company with over 11 years of expertise in web and mobile application development. Our team, comprising more than 120 skilled professionals from 6 countries, has navigated various challenges, including the COVID-19 pandemic and ongoing war aggression in Ukraine. Despite these obstacles, we have maintained our commitment to sustainable development, preserving all our projects and jobs while continuing to grow.We are proud to expand our portfolio daily, specializing in areas such as:HealthcareReal EstateLivestream E-commerceFintech (Wealth Tech, Capital Trading)Real-Time Communications (RTC)Additionally, we are developing two innovative solutions that enhance our clients' experiences with faster applications for video or audio calls (VideoRTC) and a 3D visualization application for real estate (Apartmii).Our Mission: At Softermii, we believe in turning any idea into a valuable product. Our mantra is to Succeed Without Limitations.Future Plans: We are continually evolving and seeking new opportunities to innovate and excel.

Join Innovecs as a Senior Full-Stack Engineer and be part of a global digital services leader specializing in cutting-edge software solutions. At Innovecs, we leverage our expertise across various industries including Supply Chain, Healthtech, Collaboration Tech, and Gaming to deliver exceptional results.As a rapidly growing company recognized in the Inc. 5000 list and a recipient of multiple prestigious awards, we foster a culture of innovation and employee engagement. Our open-door policy ensures transparent communication and accessibility to top management, making us a workplace where your voice matters.

Join Simulmedia as a Senior Full Stack Engineer and play a vital role in enhancing our engineering team as we expand our platform and introduce cutting-edge insights and analytics features within our innovative products. Our technical roadmap emphasizes platform unification, presenting the exciting opportunity to modernize our existing enterprise product into a cohesive, state-of-the-art technology stack. This role, featuring a focused 30/70 backend-to-frontend allocation, requires close collaboration with product managers, designers, and data engineers to ensure the seamless incorporation of analytics functionalities into our platform. Your ability to quickly iterate and deliver high-quality features that you own from start to finish will be essential. Location: Candidates must be based in Ukraine. Our offices are located in Kyiv and Lviv, and our teams primarily work remotely, with occasional in-person meetings.

Join Hire Hangar and collaborate with rapidly expanding global companies while cultivating a sustainable, remote career.Job Title: Senior Full Stack Engineer – AutomationLocation: RemoteTime Zone: Flexible / Aligned to HQ Time ZoneRole Overview: We are in search of a Senior Full Stack Engineer who has a strong enthusiasm for intelligent automation to join our expanding SaaS platform team. Your role will involve designing and developing comprehensive solutions that integrate RPA agents, AI-driven workflows, and cutting-edge frontend experiences, enabling our clients to automate intricate tasks while focusing on their core business needs.This position is ideal for an engineer who takes pride in ownership and is proficient in architecting backend automation pipelines as well as creating user-friendly, data-rich interfaces. You will engage with the entire technology stack and work closely with AI/ML engineers, product managers, and UX designers to deliver automation features that are robust, dependable, and user-friendly.

We are seeking a Senior/Lead Full-Stack Developer to enhance the technical team within Universe Group's FORMA division. You will play a crucial role in developing our web product within the document processing and conversion niche. Your primary responsibilities will include:Designing and implementing new functional modules and integrations to expand product capabilities.Ensuring high code quality and standardizing development approaches.Accelerating development processes and releasing new product versions.Defining and developing product architecture, including technology selection, project structuring, and building scalable infrastructure to support a large user base.FORMA is a business unit of Universe Group, which creates SaaS solutions for document management. Our flagship web product is PDFGuru. Our team has achieved remarkable results, including:Over 4 million users utilizing our products monthly.Access to more than 50 tools for effective document management.Users from over 30 countries choose our tools for their needs.Want to feel the atmosphere at FORMA? Check out our video showcasing our team—how we work, grow, and build a billion-dollar company from Ukraine.

Role Overview Miratech is seeking a Senior Full Stack Developer to join the team in Zhytomyr. This role focuses on building and maintaining web applications using Java and Angular. Projects span the full software development lifecycle, from initial concept through deployment. What You Will Do Design, develop, and deploy web applications with Java and Angular Collaborate with engineers to deliver high-quality solutions Review code and provide constructive feedback Troubleshoot and resolve technical issues as they arise Contribute ideas to improve development processes and code quality Who We’re Looking For Experienced in both Java and Angular development Comfortable working across all stages of the software lifecycle Strong communication and teamwork skills Committed to continuous learning and improvement

Join Universe Group, the innovators behind an ambitious AI-first web product in the visual content generation and editing space. As we transition into a phase of rapid scaling, we are on the lookout for a talented Full-Stack Developer to tackle architectural challenges and implement cutting-edge technologies into our product.Your future team includes: CEO, Full Stack Developer, Product Designer, PPC Specialist, Growth Product Manager, Product Manager, Data Analyst.Technology stack you will work with: React.js, Node.js, Nest.js, TypeScript, Redux, PostgreSQL, MongoDB, Redis, AWS, Kubernetes.Why you should join us:Collaborate closely with Ruslan — an experienced CEO with a proven track record. His previous startup, Eventmate, quadrupled its revenue within a year, secured $150K in investments (including from Google), and expanded into international markets including Europe and Brazil.Impact on business development — As a core team member, you will play an essential role in shaping the product while delving into architectural solutions and integrating the latest technologies into a product built from the ground up.A team of like-minded professionals — You will work alongside motivated individuals who support one another. We closely collaborate with technical teams across other businesses within the Universe Group, sharing insights and expertise.Opportunities for professional and career growth. We believe that the success of our business depends on the motivation and potential of each team member, so we continually invest in learning and development. You will also have the chance to advance to the Tech Lead position and contribute to team expansion and mentorship of junior specialists.Your future tasks will include:Defining and developing the product architecture, including technology selection, project structuring, and building scalable infrastructure to support a large number of users.Developing and maintaining...

Role Overview Miratech is looking for a Senior Full Stack Developer with strong experience in Java and Angular for its Ivano-Frankivsk team. This role focuses on designing, building, and launching software solutions that support business goals. The position calls for someone who can work closely with colleagues from different disciplines to improve products and ensure applications run smoothly and efficiently.

Join SKELAR, a pioneering venture builder that crafts international tech businesses. Collaborating with co-founders, we assemble high-performing teams to excel in global markets.Currently, SKELAR boasts a diverse portfolio of businesses across various niches, from EdTech to marketplaces. Our companies consistently rank among the top startups and product firms in Ukraine, achieving high standings in the App Store and developing platforms used by millions. Our innovations have been featured in renowned media outlets such as TechCrunch and Wired.People are our core value. We unite passionate talents who inspire those around them with their drive and determination. We believe that the right environment is crucial, which is why we aim to create the best workplace in Ukraine.We are seeking a Junior Full-Stack Engineer to join us in building modern, intelligent, and adaptable products that will serve as the backbone of our internal processes and help accelerate our growth. This role offers a developer the chance to make a significant impact on product development and witness tangible results from their contributions.We operate like a startup within a company: rapidly testing ideas, engaging extensively with users, and continuously searching for improvement opportunities.Our team is currently expanding as we launch new services, restructure our architecture for scalability, and incorporate AI functionalities that unlock numerous new possibilities.

About the Role Playtech is hiring a Senior Full Stack Developer for its Kyiv office. This position sits within the software development team and focuses on building and improving applications for the gaming industry. The work involves both front-end and back-end development, with a strong emphasis on delivering reliable and user-friendly products. What You Will Do Design and implement software solutions that meet business and technical requirements Enhance and maintain existing applications to improve performance and user experience Ensure smooth integration of applications across various platforms Collaborate closely with team members to deliver high-quality releases Who We’re Looking For Experience developing both front-end and back-end systems Strong attention to detail and a proactive approach to problem-solving Comfort working on complex projects in a collaborative team setting Ability to adapt and contribute in a busy development environment Location This role is based in Kyiv.

Role Overview Miratech is looking for a Senior Full Stack Developer with strong skills in Java and Angular for our team in Poltava. This role focuses on building and maintaining sophisticated applications that support both user experience and business operations. What You Will Do Design and develop software solutions using Java and Angular Maintain and improve existing applications Work on projects that enhance usability and operational workflows Location This position is based in Poltava.