Senior Full-Stack Engineer - Trading API (Client-Facing Application)

Phantom is the cutting-edge financial application embraced by millions globally. Our platform integrates all the essential features for managing, spending, and growing wealth into a seamless and user-friendly experience. Phantom simplifies crypto-powered finance, offering users control and flexibility without the hassle of unnecessary complications.By merging top-tier security with thoughtfully designed functionalities, Phantom transforms sophisticated financial tools into accessible and user-friendly options. Our commitment to speed, control, and exceptional user experience has driven rapid expansion, with over 20 million users, securing the top spot in the Google Play Store's finance category, and consistently ranking among the Top 50 apps across various categories, alongside some of the world’s most recognized consumer technology platforms.Key ResponsibilitiesWe are seeking a Senior Frontend / Fullstack Software Engineer to spearhead the asset discovery experience across tokens, perpetuals, and prediction markets. As a vital member of our Discovery pod, you will design, construct, and scale systems that empower users to explore, assess, and interact with a diverse range of tradeable assets. This position encompasses web, mobile, and browser extension development, necessitating strong frontend know-how with fullstack ownership from conception through to production.We are looking for individuals who demonstrate high agency and a proactive approach—those who can identify opportunities, drive solutions, and deliver high-quality products from beginning to end. You excel in fast-paced environments, thrive in ambiguity, and take complete ownership of your results. You will collaborate closely with product, design, and trading teams to create intuitive, impactful discovery experiences. If you are passionate about shaping the future of asset discovery in emerging markets, we would love to connect.Feature Development: You will be responsible for developing features on our web and mobile platforms, including the Phantom Extension, Phantom Terminal, and the mobile app.New Initiatives and Products: You will lead projects to incorporate support for additional blockchains into Phantom and to launch new complementary products or infrastructure.User Interaction: You will engage directly with end-users and developers using Phantom—providing support and gathering feedback to guide product development.

Phantom is at the forefront of revolutionizing personal finance, serving millions globally with our innovative money management application. We seamlessly integrate essential financial functionalities into a single, user-friendly platform, empowering users to navigate the complexities of crypto finance with ease.Our commitment to security, combined with intuitive design, ensures that advanced financial tools are accessible to everyone. As a testament to our success, we have cultivated a thriving community of over 20 million users, clinching the top spot in the Google Play Store's finance category and consistently ranking among the Top 50 apps across all sectors, alongside leading consumer tech giants.

Join Our Innovative Team!At Cacheflow, we are on a mission to revolutionize the software purchasing experience. Our platform leverages cutting-edge technologies to empower software sellers to simplify and enhance the buying process for their customers.Our Technology Stack:We utilize AWS, Java, React, and TypeScript to build scalable solutions that drive our business forward.

Join Phantom, the innovative money management app that's transforming the financial landscape for millions globally. Our platform seamlessly integrates essential tools for managing, spending, and growing money into a user-friendly experience. At Phantom, we empower users with the control and flexibility of crypto finance, all while eliminating unnecessary complexities associated with traditional financial platforms.Our commitment to industry-leading security combined with expertly designed tools ensures that powerful financial solutions are both accessible and easy to navigate. This dedication to user experience has led to remarkable growth, with over 20 million active users, a #1 ranking in the Google Play Store finance category, and a consistent spot among the Top 50 apps across all categories, standing shoulder to shoulder with the most recognized consumer technology brands worldwide.Key ResponsibilitiesAs a Senior Frontend Engineer, you will be passionate about delivering outstanding user experiences characterized by sharp visuals, fluid transitions, and intuitive user journeys—all while maintaining an agile approach to development. You'll possess the discernment to know when to refine features and when to prioritize speed in deployment.Your focus on reliability, thorough testing, and performance will complement your exceptional communication skills, allowing you to effectively collaborate with designers, product managers, and backend engineers to ensure rapid development without compromising quality.In this role, you will take ownership of core user experiences, contributing to the creation of a world-class and trustworthy application.

Join Trust Wallet as a Senior Frontend Engineer in the exciting realm of Web3 trading! We are looking for talented individuals to help us build a seamless and efficient trading experience for our users. You will play a pivotal role in designing and implementing user-friendly interfaces that meet the needs of our global user base.

Location: Fully remote position with significant overlap with the CET timezone (meetings expected between 16:00 and 18:00 CET)Classification: Full-time, 40 hours per weekPay Range: €80,000 to €140,000Position Overview:At Miaplaza, we are committed to transforming education through engaging and accessible online learning platforms. Our mission is to foster personalized learning experiences that empower students in a supportive and interactive environment. We aspire to enhance online education by implementing successful strategies from virtual learning to create an inclusive and effective curriculum platform that enables all students to thrive.As we expand our operations, we are seeking a Senior Full Stack Software Engineer to be an integral part of our team. You will collaborate with engineers of varying experience levels, seasoned hands-on engineering managers, and other dedicated team members, all focused on delivering a premier educational experience to learners from diverse backgrounds.Key Responsibilities:Architect, develop, and sustain robust web applications utilizing C# and Vue.jsWork closely with product and engineering managers, stakeholders, and cross-functional teams to define, prioritize, and implement impactful features for our usersProduce clean, maintainable, and testable codeGuide and mentor junior developers in code quality, design principles, and best practicesQualifications:A minimum of 6 years of professional software development experienceExpertise in the following areas, with strong proficiency in at least one:Modern C#/.NETVue.js or comparable reactive frameworks (e.g., React, Angular)CSS and contemporary front-end styling techniquesDatabase technologiesProven experience in leading complex engineering projects from design to executionStrong background in clean coding principles (maintainability, flexibility, extensibility)

Job Title: Senior Full Stack Software EngineerJoin Prompt, a leader in transforming the healthcare landscape, as we provide cutting-edge B2B enterprise software tailored for rehab therapy organizations. Our mission is to enhance the efficiency of therapy practices, empowering both teams and patients alike. As we continue to set the benchmark for innovation in healthcare technology, we are seeking skilled Senior Full Stack Software Engineers to join our dynamic engineering team and help address the evolving challenges faced by outpatient therapy and the broader healthcare sector.Why Choose Prompt?Significant Challenges: At Prompt, you will tackle intricate and long-standing issues that have historically hindered the healthcare industry.Exceptional Talent: Our success is driven by a team of highly skilled professionals who have made significant contributions throughout their careers, now uniting to create the premier software solution for rehab therapists.Balanced Work Environment: We prioritize smart work over hard work, allowing you to take ownership of your projects in a supportive atmosphere.Positive Impact: By digitizing a traditionally paper-heavy industry, Prompt empowers outpatient rehab organizations to treat more patients effectively while minimizing environmental waste.Key ResponsibilitiesShape the engineering team's strategy and product architecture.Draft technical specifications for new features.Lead engineering grooming sessions and manage feature development timelines.Mentor junior engineers and contribute to their professional growth.Develop and implement innovative features for our product suite.Participate in code review processes to ensure high-quality code standards.Contribute to design reviews, product retrospectives, and team ceremonies.Conduct technical interviews to help build a strong engineering team.QualificationsMinimum of 5 years of software development experience with a strong emphasis on full stack web development.Proven ability to communicate complex technical concepts with clarity and confidence.Expertise in modern web technologies, frameworks, and best practices for both front-end and back-end development.Experience with agile methodologies and collaborative team environments.A passion for problem-solving and a commitment to delivering high-quality software solutions.

At River, we are on a mission to create the world’s most reliable financial institution, empowering individuals to take control of their financial futures through Bitcoin—the only incorruptible form of digital currency. We envision a future where everyone has Bitcoin savings, and businesses adopt Bitcoin on their balance sheets. Our focus is on designing and developing innovative products that enable our clients to buy, sell, secure, and utilize Bitcoin seamlessly.We are seeking a seasoned software engineer who is adept across the entire web stack and has a proven track record of building and maintaining scalable production systems. You will be instrumental in developing features that enhance our clients' daily experiences. Our tech stack includes Elixir, React, and Postgres.River is rapidly expanding and has successfully secured over $50 million in funding from top investors, such as Goldcrest, Kingsway, Polychain, M13, DG, and Valor. We are committed to transparency, having publicly disclosed our financials and proof of reserves, allowing our clients and employees to verify our business’s strength and growth.

About TrafileaTrafilea is a leading Consumer Technology Platform dedicated to fostering transformative brand growth. We are on a mission to build the AI Growth Engine that will drive the next generation of consumer brands.With over $1 billion in cumulative revenue, more than 12 million customers, and a talent pool of over 500 individuals across 19 countries, we leverage technology, growth marketing, and operational excellence to scale our purpose-driven, digitally native brands.We own and manage our own digitally native brands (not an agency), featuring partnerships with major retailers like Walmart, Nordstrom, and Amazon, along with a robust global direct-to-consumer presence.Why Join Trafilea?As a tech-driven eCommerce group, we are scaling our own globally beloved DTC brands, while empowering ambitious talent to grow alongside us. We develop and scale our own brands. We invest in cutting-edge AI and automation in ways few in eCommerce do. We prioritize rapid testing and growth, and we support you in doing the same. Join a dynamic, diverse, and talented global team. 100% Remote work, competitive USD salary, paid time off, and additional benefits.Key ResponsibilitiesAs a Senior Frontend Engineer at Trafilea, you will integrate e-commerce excellence with innovative AI solutions. You will create state-of-the-art user experiences that enhance our globally recognized DTC brands. From storefronts to back-office applications, you’ll design and implement high-performing, scalable front-end solutions impacting millions of customers worldwide.If you are passionate about the synergy of technology, product, and design—and excel at delivering seamless user experiences—this is your chance to make a significant impact on a global scale.Develop, extend, and optimize ReactJS applications that facilitate core e-commerce functionalities including stores, carts, subscriptions, payments, and upselling.Create and implement extensible Shopify modules and integrate with platforms like Shogun (a plus).Contribute to and enhance Trafilea’s internal style system (Afrodita), focusing on reusable ReactJS components and shared UI patterns.Design intuitive back-office administrative tools for subscriptions, inventory management, and operations.Translate product and business requirements into user-friendly, scalable frontend solutions.Lead the design and implementation of frontend modules, ensuring alignment with architectural standards and business objectives.Maintain clear communication with teams and stakeholders, providing regular updates and comprehensive technical documentation (including diagrams, specifications, and libraries).Continuously enhance the performance, security, and scalability of our frontend ecosystem.Stay updated with the latest frameworks and trends in frontend development.

Join Us as a Senior Full-Stack Software EngineerLocation: Fully Remote (Preference for Europe-friendly overlap; other time zones considered with sufficient overlap)Employment Type: Full-Time/ContractorLanguages Required: Fluent in EnglishExperience Required: 6-10 years, with a strong preference for candidates with a substantial background in open-source contributions.Salary Range: €40,000 - €130,000Reports to: Head of Software EngineeringTravel Requirements: Occasional travel for workshops or team events may be necessary.Start Date: Early to Mid 2026 (TBD)About Us:Open Energy Transition (OET) is a pioneering non-profit organization committed to developing open-source tools and data for energy and grid planning. Our mission is to enhance transparency, reproducibility, and accessibility in energy planning, striving for open approaches to become the global standard by 2030.Role Overview:As a Senior Full-Stack Software Engineer, you will play a crucial role in building and improving applications across OET, including product-grade web applications, dashboards, data tools, and internal platforms that facilitate modeling workflows and informed decision-making.You will engage with all aspects of the technology stack: frontend, backend, and data layers, driving the development of new capabilities, modernizing existing systems, and enhancing reliability and developer productivity. Your work will encompass user-facing components (dashboards, reporting, results exploration), platform-facing elements (APIs, databases, automation), and integration tasks that transform modeling outputs into actionable applications.This position demands a hands-on approach from an individual who is dedicated to delivering high-quality solutions and enjoys constructing practical systems that others can rely on.

Who are we, and why are we hiring?With over 15 years of excellence, Kodify is a leader in creating outstanding video content and managing numerous high-traffic websites. Our award-winning platforms cater to millions of users globally. At Kodify, we are not merely breaking barriers in online entertainment; we are redefining the narrative! Our mission is to equip our team with the resources they need to drive innovation in our field. We pride ourselves on our unique culture, which we continue to nurture and enhance.Become a part of our team, where our employees are our greatest asset. We prioritize your growth and well-being, setting you up for success and inspiring you to produce your best work.As a fast-growing organization with diverse teams across the globe, we offer exciting challenges designed for an exceptional Senior Full-Stack Developer!At Kodify, we are passionate about technology and continuously explore what lies ahead! Our culture embraces R&D and constant optimizations.What will you do?Enhance a platform that attracts nearly 100M unique visitors monthly.Develop, maintain, and innovate both Server and Client-side applications.Take ownership of technical design, development, and testing.Collaborate with Product Owners, Designers, and domain experts to communicate possibilities and limitations effectively.Performance Focus: Strive to minimize API response times using the best available tools to ensure complete visibility: Metrics, Distributed Tracing, and Aggregated Trace Metrics.Duties: Become a valued team member, offering insights into technology, development processes, and lifecycle. Own your code, tasks, and role.Goal: Take pride in your achievements, contribute to our product's success, and drive continuous improvements.Where and when:This role is fully remote, allowing you to work from anywhere in the EU.We offer flexibility regarding your working hours, though we encourage collaboration during our core hours (10:00 to 15:00 CET) to facilitate communication among team members.* Daily virtual stand-ups are essential for us, but beyond that, you can manage your own schedule.What we offer:Fully remote position or the option to work from our vibrant office in Barcelona!Agile work environmentAccess to a top-tier technology stack!

Join tailor as a Full-Stack Software Engineer and be part of a dynamic team that is shaping the future of technology. In this role, you will leverage your expertise in both front-end and back-end development to create innovative solutions that enhance user experiences. Collaborate with cross-functional teams to deliver high-quality software products in a fully remote environment.

Join Trust Wallet as a Senior Full Stack Engineer and be at the forefront of Web3 product innovation. We are seeking an experienced engineer who is passionate about building cutting-edge solutions in the decentralized finance space. You will collaborate with a diverse team of experts to design, develop, and implement scalable applications that enhance user experience.Your role will involve working with both front-end and back-end technologies, ensuring seamless integration of various components. You will also have the opportunity to contribute to open-source projects and engage with the community to drive innovation.

CSC Generation Enterprise (CSC) is a pioneering AI-driven platform that specializes in acquiring and revitalizing retail brands, transforming them into profitable, digitally-focused, consumer-centric enterprises. Our retail platform is strategically designed around our core M&A strategy, leveraging advanced automation and AI to enhance revenue growth, unit margin management, and other expert-level retail practices. We proudly own and operate over 10 diverse retail, eCommerce, and wholesale brands, including renowned names such as Sur La Table, Backcountry, and One Kings Lane. As a Senior Full Stack Engineer, you will collaborate with a dynamic team to develop cutting-edge microservices, intuitive business-facing dashboards, and engaging customer experiences. In this role, you will take ownership of the technical components of our various services hosted within our application cloud. We are dedicated to creating a suite of API- and SDK-first, composable services, with the goal of making our systems programmable and easily discoverable for other teams across the organization. If you have a passion for high-quality abstractions, robust systems design, and established patterns, we want you on our team.

About UsSparrow is a pioneering employee leave management solution that combines high-tech innovation with a personal touch. Our mission is to simplify the process for organizations to support their employees during various types of leave, including family and medical leave.The current leave management landscape is fraught with inefficiencies that burden both company leaders and employees. While leaders grapple with ever-changing regulations, employees face overwhelming bureaucracy at critical moments in their careers. Sparrow revolutionizes this process, transforming it into a streamlined 30-minute experience that saves teams significant time (20-40 hours per leave) and financial resources (up to $30,000 per leave).Headquartered in San Francisco, Sparrow boasts a talented and diverse remote workforce across the nation. Our team is characterized by hard work, collaboration, intelligence, and humility, all while focusing on solving real-world challenges.About the RoleAs we rapidly grow, we are seeking product-oriented full-stack software engineers to become integral members of our engineering team. In this role, you will:Collaborate closely with engineering teammates to define, scope, and execute product requirements and team objectives;Design, develop, and deploy new features to enhance the user experience for both employees and employers;Engage in improving our engineering practices to ensure sustainable and secure development;Communicate progress effectively and seek assistance when necessary.About YouThe ideal candidate will possess:A minimum of 2 years of experience in software engineering;The ability to effectively collaborate with engineers and cross-functional teams;Strong written and verbal communication skills;The capability to break down complex tasks into manageable components;Familiarity with modern software tools and processes (e.g., Git, CI/CD, testing, deployment, cloud platforms);Experience with our technical stack (Django, React, Python, JS, Postgres, Heroku) is an advantage but not mandatory.Above all, we value individuals who are passionate about leveraging technology to tackle challenging problems, who enjoy creating beautiful and useful products, and who resonate with our mission. If this sounds like you, we invite you to connect with us!

About Judi HealthJudi Health is an innovative enterprise health technology organization dedicated to reshaping the healthcare landscape. We provide a comprehensive suite of solutions tailored for employers and health plans, which includes:Capital Rx, a public benefit corporation delivering full-service pharmacy benefit management (PBM) solutions for self-insured employers,Judi Health™, offering complete health benefit management solutions for employers, third-party administrators (TPAs), and health plans, andJudi®, the leading proprietary Enterprise Health Platform (EHP) that integrates all claim administration-related workflows within a single scalable and secure platform.We are committed to rebuilding trust in healthcare across the U.S. and are laying down the essential infrastructure for the care that everyone deserves. To explore more, visit www.judi.health.Location: Remote (For Non-Local) or Hybrid (Local to NYC area)Position Summary:Join our mission to revolutionize the healthcare system as a Senior Full Stack Software Developer. In this pivotal role, you will lead projects from inception to delivery. Collaborate with product managers and designers to define requirements during the discovery and planning phases. Work alongside fellow developers to implement these requirements efficiently as new features or enhancements to existing functionalities.

Greetings from Deepnote! We empower data teams to tackle their toughest challenges. This mission goes beyond advanced algorithms, expansive datasets, and enhanced computing power; it necessitates the creation of innovative tools that are yet to be developed. We are here to pioneer those solutions.As the premier data notebook platform globally, we are honored to serve clients such as Coca Cola, SoundCloud, NASA, Gusto, Webflow, Ramp, Harvard University, among many others. As we expand our dedicated team, we are on the lookout for kind, inquisitive, and talented individuals eager to grow alongside us and shape the future landscape of data science.In this role, you will confront some of the most complex challenges in the field. While we don't expect you to possess expertise in every area, we do anticipate a rapid learning curve and a willingness to take initiative. You will be responsible for developing elegant and efficient code, gathering user insights, and crafting comprehensive workflows. You'll specialize in data science tools, enjoying the freedom to choose the technologies we adopt and the features we implement. Why Join Us as a Software Engineer at Deepnote?As a Deepnote Engineer, you will have end-to-end ownership of your projects, from conception through planning, delivery, and monitoring.Complete ownership and trust are integral to our culture. Our engineers tackle the most challenging engineering problems directly, assisting data teams in overcoming significant obstacles.Each day presents a new technical and product challenge that requires innovative solutions and a proactive mindset. Our Tech StackTypescript, React, GraphQLNode.js, PostgreSQL, RedisKubernetes, AWSProficiency with Cursor, Claude Code, or a similar parallelized agentic coding tool is essential for this role.‍ Your ResponsibilitiesDevelop new features across the entire stack — including backend logic, APIs, and refined UI components.Conceive and refine AI-driven features (chatbots, copilots, code generation, agents).Work with prompts, evaluations, and context management to deliver dependable AI functionalities.Enhance our real-time collaborative notebook experience.Adopt a data-centric approach: structure, transform, and manage data flow throughout the product.

Location: Remote - Anywhere (Open to applicants located anywhere around the globe.)Fueled is a premier digital strategy, design, and engineering agency with a team of over 300 talented individuals. We have successfully designed and developed a multitude of digital products and experiences for esteemed brands such as Google, Apple, The New York Times, ESPN, Victoria’s Secret, MGM Resorts, Albertsons, and CLEAR.As a Senior Full Stack Engineer, you will play a pivotal role in architecting, building, and scaling high-performance, accessible web applications that provide exceptional user experiences. You’ll be responsible for leading comprehensive solutions utilizing React, Next.js, and the Node.js stack, employing strong typing with TypeScript to develop robust data models, manage state, and design application architecture for intricate, business-centered interfaces.Your expertise will be instrumental in working with headless CMS platforms, implementing efficient caching mechanisms, integrating with existing APIs and services, and ensuring real-time, reliable functionality at scale. Your contributions will transform ambitious concepts into maintainable, future-proof systems that adapt to client needs, elevate quality and performance, and consistently yield measurable results.Our intentionally remote team, spread across six continents, thrives in a culture that prioritizes flexibility, creativity, and advanced technology. Together, we are redefining the future of digital experiences.

At StraighterLine, we are committed to empowering students to achieve their educational and professional aspirations!About UsStraighterLine stands as the premier provider of high-quality, accessible online courses designed to help learners earn college credits and reach their career objectives. Annually, over 150,000 learners engage with more than 215 courses from StraighterLine to either advance into new career paths or acquire credits recognized by over 2,000 colleges and universities across the globe. We partner with educational institutions and corporate entities to deliver flexible learning solutions that enable students and employees to balance work and education effectively. For further information, please visit www.straighterline.com.Our Early Childhood Education division, featuring ProSolutions Training and the ChildCare Education Institute, is recognized as the market leader in early childhood training and certifications, trusted by educators nation-wide as they pursue professional development and career progression.To sustain our growth and prepare for future advancements, we are in the process of modernizing the platforms that drive these essential learning experiences.In the role of Full-Stack Software Engineer, you will collaborate closely with the Director of Engineering for the Early Childhood Education division. Your contributions will directly impact the evolution of our training and certification systems through the development of modern, scalable applications and services utilizing technologies such as React/Next.js, TypeScript, Node.js, GraphQL, and AWS. You will also play a critical role in maintaining and stabilizing existing legacy systems during this transition to a more advanced architecture.You will become part of a dynamic and impactful engineering team that works in tandem with product managers, designers, QA specialists, and offshore development partners. We foster an environment that values ownership, transparent communication, thoughtful architectural design, and continuous improvement. This position is perfect for individuals who relish tackling complex technical challenges, are eager to contribute to modernization efforts, and are motivated by the chance to create systems that significantly benefit early childhood educators across the United States.