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Sr Fullstack Developer Jobs in New York (NOW HIRING)

Dispatch

Senior Fullstack Engineer

New York, NY · On-site +1

$134K - $176K/yr

Role Details Role overview: We're looking for an experienced fullstack engineer who can lead the ... Help us build and maintain a strong (and enjoyable!) developer experience. * Ensure that the ...

Flagler Health

Senior Fullstack Engineer

New York, NY · Remote

Senior Fullstack Engineers own our main product surface end to end. One monorepo, one product: Vue 3 and TypeScript on the front, Express and MongoDB behind it, and a stack of shared TypeScript ...

HRB

Senior SW Engineer (Full Stack)

Manhattan, NY · On-site

What You'll Build & Achieve As our Senior Fullstack Engineer, you'll be hands-on across the stack -- designing, building, and scaling systems that power our AI-driven platform. Expect autonomy, speed ...

Brigit

Senior Software Engineer - Fullstack

New York, NY · On-site

$134K - $176K/yr

Brigit is looking for senior fullstack engineers to help us scale our next-generation consumer finance platform to millions of users in the next year. We've found tremendous traction helping low ...

Hirevouch

Senior SW Engineer (Full Stack)

New York, NY · On-site +1

What You'll Build & Achieve As our Senior Fullstack Engineer, you'll be hands-on across the stack - designing, building, and scaling systems that power our AI-driven platform. Expect autonomy, speed ...

Texture

Senior Fullstack Engineer

New York, NY · On-site +1

$134K - $176K/yr

What you'll do As a Senior Software Engineer at Texture, you'll collaborate closely with our Chief ... You have tons of experience using developer platforms so you can help us build our own to be best ...

Commure

Senior Fullstack Engineer, Commure Pro

New York, NY · Remote

$160K - $230K/yr

About the Role As a Senior Fullstack Engineer , you'll be critical to designing, developing, and supporting both backend and frontend logic for our innovative healthcare AI applications. You'll be ...

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Sr Fullstack Developer information

What is a Sr Fullstack Developer?

A Sr Fullstack Developer is an experienced software engineer who is proficient in both frontend and backend development. They work with a variety of programming languages, frameworks, and databases to build fully functional web applications. In addition to coding, senior fullstack developers often lead projects, mentor junior developers, and help make architectural decisions. Their broad skill set allows them to handle tasks across the entire technology stack, ensuring that applications are efficient, scalable, and user-friendly.

What are some typical challenges a Sr Fullstack Developer faces when balancing front-end and back-end responsibilities?

Sr Fullstack Developers often need to juggle tasks across both the front-end and back-end, which can be challenging when priorities shift quickly or deadlines are tight. Balancing deep technical knowledge in multiple frameworks and languages while ensuring seamless integration requires strong organizational skills and effective communication with both UI/UX designers and backend engineers. Additionally, staying updated with evolving technologies on both ends is crucial, so time management and continuous learning are key to success in this role.

What are the key skills and qualifications needed to thrive as a Sr Fullstack Developer, and why are they important?

To thrive as a Sr Fullstack Developer, you need advanced proficiency in both front-end and back-end programming languages, frameworks, and a solid understanding of software architecture, typically supported by a computer science degree or equivalent experience. Familiarity with tools such as Git, Docker, CI/CD pipelines, cloud platforms, and relevant certifications like AWS Certified Developer or similar are often expected. Strong problem-solving abilities, effective communication, and a collaborative mindset are vital soft skills for this role. These competencies enable developers to deliver robust, scalable solutions and effectively drive projects to completion in dynamic team environments.

What is the difference between Sr Fullstack Developer vs Backend Developer?

AspectSr Fullstack DeveloperBackend Developer
Required SkillsProficiency in both frontend (JavaScript, HTML, CSS) and backend (Node.js, Python, Java)Specialized in server-side languages and database management
Work EnvironmentWorks on both client-facing and server-side componentsFocuses primarily on backend systems and APIs
Common UsageUsed across full product development teamsPrimarily in backend-focused roles within development teams

The main difference between a Sr Fullstack Developer and a Backend Developer is the scope of expertise. A Sr Fullstack Developer handles both frontend and backend tasks, while a Backend Developer specializes in server-side development. Both roles require strong programming skills, but the Fullstack role demands broader knowledge across the entire application stack.

What are popular job titles related to Sr Fullstack Developer jobs in New York?

For Sr Fullstack Developer jobs in New York, the most frequently searched job titles are:

What job categories do people searching Sr Fullstack Developer jobs in New York look for?

The top searched job categories for Sr Fullstack Developer jobs in New York are:

What cities in New York are hiring for Sr Fullstack Developer jobs?

Cities in New York with the most Sr Fullstack Developer job openings:

Sr Fullstack Developer jobs near you
Infographic showing various Sr Fullstack Developer job openings in New York as of August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 8% Part Time, 1% Temporary, and 4% Contract. Highlights an 84% Physical, 6% Hybrid, and 10% Remote job distribution.

Fullstack Engineer (Member of Technical Staff)

Manhattan, NY • On-site

Cogent Security
Business Management Consulting • 11 - 50 employees
Learn more about Cogent Securityexternal

Full-time

Re-posted 11 days ago

Job description

Job Summary:
Cogent Security is an Applied AI Lab focused on developing AI agents for cybersecurity. They are seeking a Senior Fullstack Engineer to take ownership of product development, design and implement AI product experiences, and contribute to a robust engineering culture.
Responsibilities:
• Own the product.
• Design and implement Cogent’s AI product experience for enterprises that run based on our multi-tenant cloud and single-tenant enterprise platform.
• Build the new standard for generative interfaces in cybersecurity.
• Help create a robust engineering culture at Cogent.
Qualifications:
Required:
• 5+ years of professional experience as a hands-on engineer, working across the full software stack and leading the development of scalable, high-quality applications
• Expertise in designing, developing, and maintaining backend systems, including microservices, APIs, and databases, to support modern web applications
• Strong experience with frontend development, including modern JavaScript frameworks (React, Vue, Angular) and web technologies (HTML, CSS, TypeScript)
• Ability to work across the stack, integrating backend services with dynamic, user-facing frontends to deliver seamless, performant product experiences
• Proficient in API design (RESTful, GraphQL, or gRPC) and integrating with both internal and external systems
• Familiarity with containerization and orchestration technologies (Docker, Kubernetes) and deployment pipelines (CI/CD) in cloud environments (AWS, GCP, Azure)
• Solid experience in Agile development processes, including code reviews, sprint planning, and collaborative cross-functional team work to deliver full-stack product features
Company:
Cogent supports government and private sector customers responsible for protecting some of the world’s most critical assets. Founded in 2010, the company is headquartered in Alexandria, USA, with a team of 51-200 employees. The company is currently Growth Stage.

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