Backend Engineer - Wix Payments

Role overview Wix Payments seeks a Backend Engineer based in Kyiv to strengthen the systems behind payment processing for Wix users. The focus is on backend development, supporting smooth and reliable transactions across the platform. What you will do Design, build, and maintain backend features for the Wix Payments platform Collaborate with colleagues from other teams to deliver dependable payment services Help improve the stability and efficiency of transaction processing Impact This role directly supports secure and seamless payment flows for Wix users. Enhancements made here will influence the reliability and performance of payment operations throughout the platform.

Join our dynamic team as a Frontend Engineer at Wix Editor, where you will collaborate with over 1,000 skilled developers in our frontend community. You will play a vital role in managing the technical aspects of various projects, ensuring they are feasible during the discovery phase, and delivering features efficiently to production. Your contributions will help enhance our solutions throughout the development process. By partnering with product managers, designers, fellow developers, and QA specialists, you will help design innovative and scalable solutions that elevate the user experience.In your daily tasks, you will:Oversee the technical execution of projectsEngage in code reviews and pair programming to enhance code qualityBring features to life through implementation and developmentCollaborate and share knowledge across different teamsIdentify and address technical debt related to featuresParticipate in the technical design, rollout, and support of features post-production

Join our dynamic Frontend Guild as a Fullstack Infrastructure Engineer at Wix, where you will play a pivotal role in shaping the core engines that facilitate development for all frontend engineers. Your contributions will enable teams to deliver faster and with enhanced quality. You will be responsible for overseeing projects from conception to deployment, impacting a vast scale.Your Responsibilities:Design and implement internal tools aimed at boosting developer efficiency and code excellence.Manage infrastructure solutions that include production testing and performance analysis tools.Guide projects from initial ideas through design, development, and production phases.Incorporate AI technologies into your daily workflow for coding, testing, design, and making informed technical decisions.Utilize contemporary full-stack technologies and top-tier tools.Engage in close collaboration with seasoned engineers on significant projects.Enhance the developer experience throughout the organization.At Wix, we embrace the flexibility of a hybrid work model—offering you the choice to work in the office when necessary while maintaining remote connectivity. We are in search of talented individuals based in Ukraine who can effectively balance in-office and remote collaboration with the Wix team. This approach provides you with the ideal blend of remote flexibility and beneficial in-person teamwork when it counts.

Join the Wix CTO Office team as a Machine Learning Engineer, where your expertise will contribute to pioneering solutions that enhance Wix’s products in a competitive landscape. The team is focused on the development of innovative agents using advanced techniques, especially leveraging Large Language Models (LLMs).Your daily responsibilities will include:Creating Proofs of Concept (POCs) for various research initiatives.Analyzing results and generating actionable insights to inform product development.Collaborating with diverse teams across Wix to enhance agent functionalities.Developing shared infrastructure to support agent-based systems.

Oversee the complete software development lifecycle: from architecture and design to development, deployment, monitoring, and operational support.Contribute to a distributed product line utilizing Node.js technology.Design and implement microservices, as well as develop efficient APIs.Assume responsibility for continuous delivery, catering to millions of users globally.Address challenges related to system scalability and integration with external third-party services.

Join our dynamic Data Team at Wix as a DevOps Engineer, where you will play a pivotal role in optimizing our infrastructure and enhancing our data processing capabilities. You will collaborate with cross-functional teams to improve deployment automation, maintain system reliability, and ensure the scalability of our services.

Join our innovative AI Creation Team at Wix Harmony, the forefront of Wix's AI-driven website development. We are dedicated to crafting the essential elements that empower AI to construct real, functional websites.Your Role:Develop high-quality and scalable code using React and TypeScript.Design and implement new features from conceptualization to production.Review code changes and uphold rigorous engineering standards.Collaborate effectively with product managers, designers, and other engineers to deliver AI-enhanced products.Tackle complex challenges in both frontend and backend (Node.js) development.Engage in technical discussions, make architectural decisions, and contribute to continuous improvement initiatives.

Our Mission and VisionAt Solidgate, our mission is straightforward: to empower exceptional entrepreneurs in building outstanding internet companies. We exist to support the builders — those who are shaping the digital economy — with the robust financial infrastructure they need. Our ambitious goal is to become the leading payments orchestration platform globally.About the Team and RoleWe are in search of a talented Backend Engineer eager to transition to Go and join our team dedicated to creating products that minimize fraud-related risks for our clients. You'll be working on our innovative Representment product, which has the potential to save our merchants significant amounts of money.If you excel in a high-performing team that prioritizes speed, ambition, and ownership, then this is your opportunity. Our culture is rigorous, transparent, and highly collaborative. It may not be for everyone — but if you're ready to elevate your game alongside equally motivated colleagues, this is where you belong.Explore our technology stack here.Your ResponsibilitiesDevelop dispute management systems. Create services that gather dispute data from payment systems and convert it into actionable insights for merchants.Integrate with leading global payment providers. Collaborate with platforms like Stripe, Adyen, and PayPal.Build scalable financial infrastructure. Contribute to systems that facilitate invoicing, billing, reconciliation, and other financial functions.Launch new payment products. Collaborate with partners such as Visa, Mastercard, and AMEX to deliver innovative solutions.Enhance the Representment product. Develop APIs and interfaces that allow merchants to upload dispute evidence and submit it directly to payment schemes.Ideal Candidate ProfileDemonstrates strong ownership and a clear technical perspective (you have mastered one backend language and are ready for a new challenge).Produces production-ready systems, not just individual features.Possesses a solid understanding of high-load system design.Confident in testing (unit tests, integration tests).

We are seeking a highly organized, proactive, and people-oriented Design Operations Manager to become a vital part of our Design Hub team based in Kyiv. In this pivotal role, you will drive the operational success of the hub, marrying structured processes with a human-centric approach and a profound understanding of the design landscape. Your responsibilities will encompass managing the 'business of design'—from overseeing financial workflows and vendor relationships to orchestrating large-scale events and educational initiatives—allowing our talented designers to concentrate on their creative pursuits in a vibrant atmosphere. This is an exceptional opportunity for a leader who embodies design culture, communicates fluently in professional terminology, and thrives in matrix management, converting logistical and operational hurdles into seamless, polished experiences.

Join Wix as a Senior Product Analyst and take on a pivotal role in addressing intricate challenges at scale. Leverage data and research to validate innovative ideas, extract valuable insights, and propel our product's evolution. Your responsibilities will include:Diving deep into data, orchestrating, executing, and interpreting the outcomes of A/B tests.Overseeing the tracking and reporting of key company, team, and product performance indicators and success metrics.Creating and maintaining comprehensive reports, dashboards, and performance metrics while safeguarding data accuracy.Delivering essential insights and recommendations to senior leadership.

SKELAR is a venture builder dedicated to creating international product-oriented IT companies following the principles of the venture capital world. Together with co-founders, we assemble strong teams to launch product-focused IT businesses and excel in global markets.Currently, we are in search of a Senior Backend Engineer for our partner company.This platform focuses on personal and spiritual growth, built on Christian values. We assist individuals in finding answers to life’s most significant questions: from a deeper understanding of faith to enhancing relationships through personalized plans. Our users have access to lessons, interactive quizzes, and video materials, creating a holistic learning experience.Our strategy is to become a global platform where tens of millions of Christians, hundreds of organizations, and thousands of mentors and pastors can interact.Key Achievements We Are Proud Of:Users love us: our average rating on App Store, Google Play, and Trustpilot is 4.7/5.We are rapidly growing: our team has increased fourfold in the last year.We are a partner of Meta, confirming the high level of our product and the trust of technological leaders.We are evolving at an incredible pace, providing every team member the opportunity to grow rapidly alongside the company—both professionally and personally. The company supports learning through mentoring, internal educational initiatives, and access to external courses.It is worth noting that we extensively integrate AI tools into all processes. We are already utilizing integrations with MCP servers in daily tools, AI Code Review, and automation of key routine tasks. This allows us to focus on creativity and innovation instead of routine tasks.

Important: This position requires relocation to our Milan office.About SatispaySatispay is on a mission to transform everyday payments, making them simple, equitable, and accessible for everyone. Our vision extends beyond the present as we strive to shape the future of financial transactions.We are a movement that empowers millions, united by a common goal to confront significant challenges. Our agile approach allows us to innovate rapidly, think creatively, and learn collaboratively as we push boundaries.If you seek to make a meaningful impact alongside a talented team, you have come to the right place.Key ResponsibilitiesAs a Senior Backend Software Engineer within the Business Team, you will significantly influence the future of digital welfare payments. Your responsibilities will encompass everything from employer benefits to sophisticated products, supporting the entire journey for both employers and employees to ensure lasting satisfaction. You will guide the technical direction, maintain quality, and ensure the timely delivery of complex systems that enable numerous employers to manage their corporate welfare efficiently. Here’s what you can expect in your daily tasks:Develop Multi-Service Solutions: Conduct thorough technical analyses for medium-to-large projects affecting various services in the Employer domain. Design comprehensive, highly available solutions, emphasizing scalability, security, and maintainability for products central to welfare.Guarantee Technical Quality: Implement strong testing strategies, balancing both automated and manual coverage while managing gradual rollouts with vigilant monitoring to ensure precise welfare distributions.Identify and Resolve Blockers: Proactively foresee and address technical obstacles, promoting knowledge sharing throughout the organization. Tackle the unique challenges posed by B2B registration workflows and high-volume benefit allocations while ensuring code quality through active reviews.Take Ownership: Own your projects from inception to completion, delivering features that genuinely address user needs—from the moment an employer signs up to when an employee utilizes their welfare benefits—through seamless and efficient back-end integration.

Join Our Mission at SolidgateAt Solidgate, we are dedicated to empowering visionary entrepreneurs to create unparalleled internet companies. Our goal is to provide the essential financial infrastructure that innovators require to thrive in the digital economy. We are on an ambitious journey to establish ourselves as the leading payments orchestration platform globally.About Your RoleWe are seeking an enthusiastic and business-oriented Go Engineer to contribute to our dynamic team focused on developing solutions that mitigate fraud-related risks for our clients. You will play a pivotal role in launching our cutting-edge Representment Product, which has the potential to save our merchants substantial amounts of money.If you excel in a fast-paced environment that values high performance and ownership, you will find your place here. We foster a culture of transparency and collaboration, pushing each other to elevate our standards daily.Discover our technology stack here.Your ResponsibilitiesDevelop the Dispute module for efficient data collection from payment systems and enhance clarity for clients.Implement the Representment module by creating user-friendly interfaces and APIs for merchants to submit evidence to payment schemes.Integrate with major global payment providers such as Stripe, Adyen, and PayPal.Launch new products in partnership with Mastercard, Visa, and AMEX.Build the financial infrastructure, focusing on invoicing, billing, and reconciliation at scale.What We Are Looking ForAt least 3 years of experience in backend development.Minimum 1.5 years of experience with Go programming language.Proficient in PostgreSQL database management.Demonstrated experience in working with microservices architecture.Strong understanding of designing high-load systems.Experience with comprehensive test coverage, including unit, integration, functional, and end-to-end testing.A proactive, results-oriented approach to problem-solving.Ability to take initiative and make sound decisions.

About SKELAR SKELAR is a Ukrainian venture builder focused on launching international tech businesses. The company works with co-founders to build teams that aim for success in global markets. SKELAR operates several businesses across sectors such as EdTech and marketplaces. These ventures regularly earn top spots among Ukrainian startups and product companies, perform strongly in the App Store, and serve millions of users. SKELAR’s projects have appeared in media including TechCrunch and Wired. The team includes over 1,000 specialists with a wide range of expertise. SKELAR values its people and aims to attract the best talent available. Role Overview: Payments Manager The Payments Processing Team handles the full cycle of revenue acquiring for businesses with varying needs. This group manages relationships with partners and stakeholders from multiple countries, working to improve and scale payment operations. What You Will Do Payment Optimization Monitor, analyze, and technically improve payment processing logic. Work with analytical and technical teams to test new payment configurations and ideas that aim to increase successful payment conversion rates. Risk and Compliance Management Track and improve key financial and operational risk metrics. Enhance compliance with banking, payment system, and legal requirements on an ongoing basis. Processing Cost Optimization Review and optimize commercial terms with partners to improve cost efficiency. What We’re Looking For At least 3 years of experience in payments, billing, business analytics, corporate finance, auditing, consulting, or investments. Strong analytical abilities. Clear and effective communication skills. Ability to turn data into actionable strategies and solutions. Comfort with multitasking and working under pressure. Location Kyiv (Headquarters)

SKELAR is a venture builder dedicated to establishing international product IT companies following the principles of the venture investment landscape. Together with co-founders, we assemble strong teams to launch product IT businesses that succeed in global markets.RiseGuide is an EdTech platform focused on self-improvement, inspired by the principles and examples of influential role models. Our users shake off harmful habits guided by insights from Andrew Huberman and Simon Sinek, enhance their social media presence using playbooks from Alex Hormozi and MrBeast, and cultivate their charisma drawing inspiration from Robert Downey Jr. and Steve Jobs.We aim to redefine the self-improvement industry, providing users with on-demand access to expert knowledge.Key Facts About RiseGuide:— Achieved unit economics within six weeks and have been actively scaling since;— Over 300,000 paid users, with a rating of 4.6/5 on the App Store and 4.4/5 on TrustPilot;— Ranked in the top 3 for revenue among launches in the Genesis ecosystem over the past two years;— A team of 70+ individuals from BetterMe, Welltech, Jooble, and leading management programs worldwide.We are currently seeking a Payment Analyst.Challenges Awaiting You:Payment Throughput Optimization:— Analyze and identify growth opportunities for improving payment technical optimization;— Actively test routing and conduct monetization A/B tests.Working with Risks and Taxes:— Analyze and enhance key risk metrics for the business, such as VAMP rate (VISA), Fraud rate (Mastercard), Dispute rate & Claim rate (PayPal);— Conduct A/B tests to optimize tax burdens.Effective Scaling of Payment Infrastructure:— Support and develop relationships with current banking partners;— Implement new technical and commercial opportunities to enhance quality and reduce the cost of payment services.What We Value:— 2+ years of experience in Payments, Billing, analytics, audit (Big4), corporate finance, or investment management;— An analytical mindset and proficiency in Excel/Google Sheets (building complex models, working with large datasets). Experience with SQL, Tableau, or Power BI is a plus;— Understanding of payment processing processes (MIDs, PSP, chargebacks, routing, and cascading payment logic);— Experience in managing business processes, ability to identify growth points, and more.

SKELAR is a dynamic venture builder dedicated to creating international product IT companies guided by the principles of venture investing. Together with co-founders, we assemble strong teams to launch product-focused IT businesses and excel in global markets.We are currently seeking a Junior/Middle Backend Engineer to join our partner company.This platform is designed for personal and spiritual development, based on Christian values. We assist individuals in finding answers to life's most significant questions, from deepening their faith to enhancing relationships with loved ones through personalized plans. Our users gain access to lessons, interactive quizzes, and video materials that create a comprehensive learning experience.Our strategy is to become a global platform where tens of millions of Christians, hundreds of organizations, and thousands of mentors and pastors can interact.Key Achievements We Are Proud Of:Users love us: average ratings in the App Store, Google Play, and Trustpilot are 4.7/5.We are growing rapidly: our team has quadrupled in the past year.We partner with Meta, which affirms the high quality of our product and the trust of technology leaders.We are evolving at an incredible pace, and every team member has the opportunity to grow rapidly alongside the company, both professionally and personally. The company supports learning through mentoring, internal educational initiatives, and access to external courses.Notably, we extensively integrate AI tools into all processes. We already utilize integrations with MCP servers in everyday tools, AI Code Review, and automation of key routine tasks. This allows us to focus on creativity and innovation rather than routine.

Join our dynamic team at Wix as a Server Engineer, where you will be at the forefront of developing and maintaining robust server infrastructure. You will work closely with cross-functional teams to ensure optimal performance and scalability of our services.

SKELAR is a prominent Ukrainian venture builder dedicated to developing international tech businesses. Together with our co-founders, we assemble strong teams poised to achieve success in global markets.Currently, SKELAR manages numerous businesses across various niches, from EdTech to marketplaces. Our companies consistently rank among Ukraine's top startups and product companies, achieving high positions in the App Store and developing platforms used by millions worldwide. Major media outlets, including TechCrunch and Wired, feature SKELAR's businesses.We take pride in our robust team of over 1,000 specialists, each bringing exceptional expertise and ambitious goals. Our people are our most valuable asset, and we aim to build businesses with the best talent available.Storyby is an entertainment tech company that transforms original ideas into captivating stories told through novels, vertical films, and immersive audiobooks. Over 10 million people globally engage with our content.In the Storyby ecosystem, we offer three key products:AlphaNovel – a platform for novels and immersive audiobooks featuring over 20,000 works.StorybyWriter – a publishing platform for more than 25,000 authors, bringing the strongest stories to life for DramaShorts.DramaShorts – a streaming service for vertical cinema with 1 million fans monthly, featuring in-house productions across Europe and the USA.We are currently expanding our team and looking for a Backend Engineer who will be a vital part of our team, helping the business grow and reach new heights.Your responsibilities will include:— Implementing and maintaining API endpoints for web and mobile: HTTP Cloud Functions, validation, OpenAPI/Swagger.— Optimizing performance: profiling, caching, and ensuring correct indexing for swift operation.— Ensuring quality and reliability: unit and integration testing (Jest), logging, tracing, alerts.— Conducting code reviews and upholding engineering standards in a monorepo (Nx, esbuild, CI).— Engaging in foundational infrastructure work using Terraform and participating in incident analysis.What we value:— You possess 3+ years of backend development experience with Node.js and TypeScript/JavaScript.— You have a strong understanding of SQL beyond basic SELECT queries, including indexing, profiling, and optimization.

SKELAR is a Ukrainian venture builder dedicated to creating international tech companies following the principles of venture capital.We are seeking a dynamic and experienced Payments Lead to join one of our ventures, Howly.Howly is a multi-product company under SKELAR. We are committed to developing high-quality products that serve users in the global professional services market.Currently, Howly offers four products operating in international markets:A global legal solutions platform: Simplifying legal services to make them accessible and fast for everyone, digitalizing legal processes for easy support worldwide.Smart document automation: Eliminating routine tasks, our product significantly streamlines document management, allowing users to focus on more critical tasks.A career development platform: We help individuals grow by providing opportunities for career advancement, from resume assistance to career consulting, paving the way from potential to fulfilled ambitions.A marketplace for technical consultations: Connecting technical experts with those in need of their expertise quickly.We pride ourselves on delivering quality, accessible service to our clients 24/7. Our rapid growth, strong business logic, and commitment to building a workplace that is enjoyable today and desirable for the long term have allowed us to launch four products in Ukraine for international users over the past four years, growing our team to over 300 members.

Role overview Wix.com Ltd. seeks an AI-Native Software Engineer for its Kyiv office. The position centers on building and refining AI technologies that power the Wix platform and serve a global audience. What you will do Build and integrate AI-driven features within Wix products Collaborate with engineers and specialists to deliver reliable solutions Take part in projects that shape the future of web development at Wix Team and culture Work alongside experienced professionals who value practical problem-solving and new ideas. The team supports open communication and shared learning to strengthen both the platform and each member’s skills.