react frontend engineer jobs in Philadelphia

About the Role Our client is seeking a talented and creative Senior Frontend Engineer with expertise in React to join their dynamic product development team in Philadelphia . You will play a key role in designing and building intuitive, high-performance user interfaces for our client's flagship products. This position offers the opportunity to work on...

AfterQuery is looking for experts with experience in software engineering, computer science, or app/web development to help train and evaluate AI models. This is a remote, project-based role: qualify once through a single assessment and receive ongoing project matches spanning code review, evaluation, and original task creation. Pay ranges from $50 to...

Who We AreBainbridge Health unlocks the full value of pharmacy data to enhance the safety, efficiency, and reliability of medications. Our goal is to make it easier for pharmacy and safety leaders to prevent patient harm, reduce avoidable waste, and help clinicians regain control of their time. A spin-out company of the Children’s Hospital of Philadelphia,...

About Us: Perpay is a certified B Corp and Philadelphia’s most impactful growth-stage startup. We are driven by a mission to significantly improve the financial stability of everyday Americans. For the past decade, we have established strong product-market fit and a profitable, efficient operating model across a suite of products, positioning Perpay as the...

Frontend EngineerWe're looking for a Frontend Engineer to set the technical direction for data visualization at Omni. You'll draw on your data viz experience to shape how customers see and interact with their data, working closely with our Product Manager, who also comes from a data viz background, and the engineers currently building in this area. You'll...

Performance Engineer (Frontend Focus)Philadelphia, PAExperience: 12 Years IntroductionWe are seeking a seasoned Performance Engineer with extensive experience in performance analysis, optimization, and observability across enterprise applications. The ideal candidate will bring strong technical expertise in diagnosing bottlenecks, tuning systems, and...

Are you an experienced full stack developer (React Node) looking to work on our cutting-edge frontends for a healthcare mission driven organization?Are you a collaborative Sr Software Engineer with an automation mindset — someone who looks for ways to build tools, agents, or AI-assisted workflows to multiply your own and your team's impact?About the role...

Are you an experienced full stack developer (React Node) looking to work on our cutting-edge frontends for a healthcare mission driven organization?Are you a collaborative Sr Software Engineer with an automation mindset — someone who looks for ways to build tools, agents, or AI-assisted workflows to multiply your own and your team's impact?About the role...

About the Role Our client is seeking a talented and creative Senior Frontend Engineer to join their product development team in Philadelphia . You will be responsible for building intuitive, responsive, and high-performance user interfaces for their next-generation web applications. This role requires a deep understanding of modern JavaScript frameworks,...

About the Role Our client is looking for an innovative Lead Frontend Engineer to guide their user experience initiatives in Philadelphia . This role is crucial in translating design concepts into high-quality, interactive web applications. You will lead a team of frontend developers, ensuring the delivery of exceptional user interfaces and seamless user...

About the Role Our client is seeking a highly skilled and experienced Senior Frontend Developer to join their innovative Creative & Digital team. This is a fully remote position, allowing you to contribute to impactful projects from anywhere. You will be responsible for building and optimizing user-facing features for cutting-edge web applications. This...

Our Business Technology organization builds secure and intelligent internal platforms that power our global workforce. As aLead Software Engineer, Applied AI (Frontend Leading), you will build intuitive, performant user interfaces and frontend integration libraries that make Generative AI (GenAI) and intelligent automation accessible and useful across IT,...

Plano 1 (31061), United States of America, Plano, TexasSoftware Engineer, Full Stack (React, TypeScript)Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers,...

About Us: Perpay is a certified B Corp and Philadelphia’s most impactful growth-stage startup. We are driven by a mission to significantly improve the financial stability of everyday Americans. For the past decade, we have established strong product-market fit and a profitable, efficient operating model across a suite of products, positioning Perpay as the...

About Us: Perpay is a certified B Corp and Philadelphia’s most impactful growth-stage startup. We are driven by a mission to significantly improve the financial stability of everyday Americans. For the past decade, we have established strong product-market fit and a profitable, efficient operating model across a suite of products, positioning Perpay as the...

About Proscia Proscia is revolutionizing pathology, the last major frontier in healthcare to embrace digital. As a leader in pathology AI software, we are empowering pathologists and scientists to transition from traditional microscope-based workflows to digital, AI-driven approaches, unlocking new possibilities in precision medicine. The digital pathology...

We are looking for anArchitect / Principal Software Engineerto lead the technical direction of our AI Engineering pods. You will split your time between hands-on engineering (about 30% to 40% prototyping core workflows, building reference implementations, and reviewing code) and higher-level system architecture, technical standards, and mentorship across...

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to...

Company DescriptionAbout us:Oncora is an oncology software and data company dedicated to helping physicians and scientists collect and use real-world data to improve outcomes for cancer patients. Our machine learning algorithms, which are deployed in active clinical environments, accurately predict oncology outcomes such as unplanned hospitalization,...

We’re looking for a “Lead Visualization Engineer” with hands-on expertise in Deck.gl, React, JavaScript, HTML/CSS, and SQL to lead high-impact, interactive visualizations.   🚨 Position: Lead Visualization Engineer 📍 Location: Philadelphia, PA (Day 1 onsite) ⏳ Duration: Long Term   ✅ Must Have: 7+ yrs in Deck.gl, React, JavaScript,...