backend engineer jobs in Philadelphia

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...

RoleSeeking a senior, hands-on Python backend engineer to build and support production APIs, middleware, microservices, and enterprise integrations. Must have strong Python and FastAPI experience, solid database skills, and the ability to independently deliver production-quality code with minimal guidance. Experience using AI coding tools such as GitHub...

effodio Senior Backend Software Engineer (Tech Lead) Full-Time | Remote - United States About effodio Founded by industry veterans from Google, Arista, and other leading tech companies, effodio is revolutionizing cloud application and infrastructure analytics. Our advanced platform harnesses modern distributed systems, cloud-native technologies, and...

OverviewApply (by clicking the relevant button) after checking through all the related job information below.In this role you build and optimize the backend that powers Xumo's video streaming platform, enabling scalable delivery of high-quality streams to millions of viewers. You will lead design and integration of backend systems, APIs, and data pipelines...

API DeveloperBuilds and operates the core APIs, services, orchestration layers, integrations, and business capabilities. This role combines strong software engineering discipline with agentic development practices to deliver secure, scalable, resilient services from design through production operation.Key ResponsibilitiesDesign, build, test, deploy, and...

IMPORTANT: after you apply, please check your email. We send you a link to complete your application — it is not considered until that last step is done. If you do not see it, check your spam folder. This is a fully remote position, open to candidates based in 55 countries, including United States, United Kingdom, Canada, Germany, India, France,...

Location: Remote (US); Central to Pacific time zones preferredSalary: $152,000 - $170,000 plus 10% bonusSniffies is a location-based, interactive web app designed to help gay, bi, and curious individuals connect in a safe, judgment-free environment. Using an innovative map interface, users can discover nearby individuals and popular meetup spots and join...

About the CompanyMango Voice is a leading provider of cloud-based communication solutions, helping businesses of all sizes connect with their customers through innovative VoIP, SMS, and collaboration tools. We are rapidly expanding our partner ecosystem and are looking for a driven individual to help build the technical evolution of our platform.About the...

Who is Recruiting from Scratch:Recruiting from Scratch is a specialized talent firm dedicated to helping companies build exceptional teams. We partner closely with our clients to deeply understand their needs, then connect them with top-tier candidates who are not only highly skilled but also the right fit for the company's culture and vision. Our mission is...

Principal Backend Developer – Clinical Applications EngineeringOracle Health is building the next generation of healthcare technology through our Gen2 Electronic Health Record (EHR) platform. We are seeking a highly skilled Principal Software Engineer to join our Clinical Applications Engineering team focused on modernizing provider workflows, inbox...

Skool’s engineering team is seeking highly experienced Backend Software Engineers with a passion for developing performant and scalable backend services written in Go . You will collaborate with Product Management, Designers, Engineers, and other stakeholders to determine the best way to design and implement new systems. You will also help to maintain and...

AI Backend Systems Engineer Remote, Nationwide Our client is building advanced AI technology designed to turn increasingly capable models into dependable, real-world software. They are seeking an AI Backend Systems Engineer to help create the infrastructure behind intelligent applications and automated workflows operating at production scale. This is an...

OverviewCheck out the role overview below If you are confident you have got the right skills and experience, apply today.As a Senior Backend Software Engineer in Ad Engineering at Philo, you will help shape the next generation of our SSAI and ad-tech stack. You’ll lead technical initiatives across distributed, cloud-based infrastructure to deliver...

API DeveloperBuilds and operates the core APIs, services, orchestration layers, integrations, and business capabilities. This role combines strong software engineering discipline with agentic development practices to deliver secure, scalable, resilient services from design through production operation.Key ResponsibilitiesDesign, build, test, deploy, and...

At Lyft, our purpose is to serve and connect. Lyft fosters a collaborative environment in the office, so there's always a sharp mind eager to hear about your next idea. Own your project, while checking in with other team members throughout the day with questions and updates You value reliability, ensured by testing (unit, integration and load tests) ...

AI Backend Systems Engineer Remote, Nationwide Our client is building advanced AI technology designed to turn increasingly capable models into dependable, real-world software. They are seeking an AI Backend Systems Engineer to help create the infrastructure behind intelligent applications and automated workflows operating at production scale. This is an...

We're seeking a SFCC Backend Developer who will be responsible for designing and implementing new and exciting features, while also maintaining and enhancing the existing implementations on our ecommerce websites. They will collaborate with various internal and external teams to enhance the overall efficiency and optimization of the infrastructure. PLEASE...

We're seeking a SFCC Backend Developer who will be responsible for designing and implementing new and exciting features, while also maintaining and enhancing the existing implementations on our ecommerce websites. They will collaborate with various internal and external teams to enhance the overall efficiency and optimization of the infrastructure. PLEASE...

Were seeking a SFCC Backend Developer who will be responsible for designing and implementing new and exciting features, while also maintaining and enhancing the existing implementations on our ecommerce websites. They will collaborate with various internal and external teams to enhance the overall efficiency and optimization of the infrastructure. PLEASE...

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and...