110 backend fullstack developer jobs at 87 companies in United States

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Sr. Fullstack Platform Engineer - (Backend Focus)
Los Angeles or California or United States
$140k-$180k/yr RemoteFull Time
Salt AI
Salt AI: Software providing governed, auditable AI workflows for regulated life sciences, financial, energy, and government organizations.
Senior backend/platform engineer with deep Python/Django, APIs, cloud infrastructure, Kubernetes, distributed systems, workflow execution, observability, and fullstack familiarity (TypeScript/React). High product judgment and experience using AI engineering tools.
Python, Django, TypeScript, React, Kubernetes, Claude Code, Cursor, Codex, GitHub
1d
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Staff Fullstack Engineer
New York City, New York, United States
OnsiteFull Time
Polymarket
Polymarket: Private blockchain-based prediction market platform where users trade on outcomes of real-world events.
7+ YOERequires 7+ years of fullstack engineering experience, depth across frontend and backend, experience shipping onboarding or acquisition funnels, cross-team collaboration, product judgment, system-level tradeoffs, and clear communication.
KYC, Web3, A/B testing
1mo
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.NET Fullstack Developer
Jersey City, New Jersey, United States
$100k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesBSE: 532540: Global leader in IT services, consulting, and business solutions.
6+ YOE.NET and Angular fullstack experience, 6+ years in apps development, strong UI and backend skills, SQL/NoSQL knowledge, SCM and DevOps tooling, bachelor's in computer science or equivalent.
.NET, Angular, HTML, CSS, SQLSERVER, Kafka, Python, SQL, Oracle Database, NOSql DB, GIT, JIRA, OpenShift, Docker, AWS, S3, Azure, LLM, copilot
1mo
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Senior Software Engineer (Backend/Fullstack Lead)
Charlottesville, Virginia, United States
$116k-$209k/yr OnsiteFull Time
General Atomics Integrated Intelligence, Inc.
General Atomics Integrated Intelligence, Inc.: Private defense intelligence providing geospatial data management, analytics, visualization, and software to government and commercial clients.
8+ YOEExpert Java and Spring Boot backend/fullstack experience, Linux, Docker, Kubernetes, AWS, helm/helmfile, Kafka/NiFi/GeoMesa familiarity, ability to obtain DoD Top Secret/SCI clearance, senior-level software engineering and technical leadership.
Kafka, AWS, NiFi, GeoMesa, Java, Spring Boot, Linux, Docker, Kubernetes, helm, helmfile, Python
6d
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Lead Software Engineer - Backend Fullstack
Plano, Texas, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services and investment banking firm.
8+ YOERequires formal software engineering training or certification, 5+ years applied experience, 8+ years Java development, enterprise AI-tool leadership, strong CS fundamentals, Spring, React, AWS, SQL, microservices, and CI/CD expertise.
Java, Core Java, Java EE, Spring Boot, Spring MVC, Spring Cloud, Spring Flux, Spring Security, ReactJS, TypeScript, HTML5, CSS3, SQL, AWS Lambda, AWS ECS, Amazon S3, Amazon Aurora, Amazon API Gateway, Kafka, RabbitMQ, Atlassian
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Principal Engineer (Fullstack/Backend)
United States
$240k-$280k/yr RemoteFull Time
Hims & Hers
Hims & HersNYSE: HIMS: Publicly traded U.S. telehealth platform connecting consumers with licensed providers and personalized prescription and wellness care.
15+ YOE15+ years software engineering experience with deep architectural expertise; experience delivering backend systems at scale; backend languages (Kotlin, Java, Go); frontend (React, Next, GraphQL); CI/CD, cloud, and observability experience; strong communication and mentoring skills.
Kotlin, Java, Go, React, Next, GraphQL, CircleCI, GitHub, AWS, Docker, Kubernetes, Datadog
4d
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Fullstack AI Engineer
United States
$118k-$147k/yr RemoteFull Time
G-P
G-P: Private SaaS global employment platform helping companies hire, onboard, pay, and manage teams across 180+ countries.
Bachelor’s or Master’s degree in Computer Science, Engineering, or related field; fullstack web, Generative AI, LLM, backend, RAG, CI/CD, cloud, and AWS experience required.
React, Next.js, TypeScript, OpenAI, Anthropic, Bedrock, Python, NodeJS, Go, RESTful APIs, Retrieval-Augmented Generation (RAG), CI/CD, AWS, Generative AI, LLM APIs, vector databases, UX Design, natural language processing
3mo
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Fullstack Software Engineer, Applied AI
San Francisco, California, United States
$130k-$500k/yr OnsiteFull Time
Mercor
Mercor: AI-powered talent marketplace connecting contractors with global organizations.
5+ YOE5+ years fullstack experience; JS/TS (React/Next.js); Python/Node.js backend; data pipelines; strong UX; able to own frontend and backend.
React, Next.js, Python, Node.js, REST, Relational databases
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Fullstack Engineer
New York City, New York, United States
OnsiteFull Time
Baba
Baba: Private patient-advocacy and care-navigation serving older adults and caregivers with human healthcare advocates.
2+ YOE2+ years software engineering; backend languages; distributed systems; reliability and safety focus; AI/ML interest; startup experience.
Python, Go, Rust, TypeScript
3mo
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Fullstack Software Engineer (AI-Native)
Cambridge, Massachusetts, United States
$150k-$200k/yr HybridFull Time
Proton.ai
Proton.ai: The industry cloud platform for distributors providing AI-powered sales, CRM, catalog management, and order entry.
5+ YOE5+ years fullstack delivery; strong fundamentals; hands-on with AI tools; generalist across frontend/backend; excellent communication and ownership.
TypeScript, Vue, Python, SQL, PostgreSQL, Claude Code, Cursor, Codex
2w
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Senior Fullstack Engineer
United States
RemoteFull Time
Airtop
Airtop: AI web automation platform that helps marketers, sales teams, and operations staff build and run web agents.
5+ YOE5+ years building scalable production backend systems and APIs; strong distributed systems, cloud infrastructure, reliability engineering, and TypeScript skills; familiarity with Go or Python and frontend development.
Kubernetes, Pulumi, GCP, AWS, Kafka, Pub/Sub, SQS, Redis, TypeScript, Go, Python, Postgres, DynamoDB, OpenAI, Anthropic, Gemini, LangChain, LangGraph, Braintrust, LangSmith
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Fullstack Engineer
United States
RemoteFull Time
Hipp Health
Hipp Health: AI-native healthcare platform for behavioral health practices, streamlining scheduling, clinical documentation, billing, and compliance.
3+ YOE3–4 years software engineering experience; proficiency across backend and frontend; experience with Python, Go, Java, or Node.js/TypeScript; React and API experience; strong fundamentals in system design and data structures.
Python, Go, Java, Node.js, TypeScript, React, JavaScript, REST APIs, AWS, GCP, Azure, PostgreSQL, MySQL, NoSQL, EMR, EHR
3w
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Senior Fullstack Engineer
Da Nang or San Francisco or United States or Vietnam or Europe
OnsiteFull Time
Flodesk
Flodesk: Private email marketing and commerce SaaS platform for small businesses, creators, solopreneurs, and coaches.
Strong frontend or backend engineering skills; TypeScript, React, modern build tools, SOA, Golang or Node.js, databases, AWS, scalable systems, AI-assisted development, product thinking, ownership, and collaboration.
TypeScript, React, Vite, Turbo, Golang, Node.js, MongoDB, PostgreSQL, AWS, Claude Code, Cursor, Codex, Figma, Shopify, Zapier, WooCommerce, MacBook Pro
2w
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Staff Software Engineer (Backend FullStack) - App Components
Bangalore or San Francisco
OnsiteFull Time
Rippling
Rippling: Unified workforce management platform for HR, IT, and Finance.
8+ YOERequires 8+ years of software engineering experience, scalable backend expertise, Python, Golang, and production systems experience; React and React Native, distributed systems, and strong communication skills are also required.
Python, Golang, Kafka, Flink, AWS, React, React Native, Django, MongoDB, Microsoft 365, Slack
6d
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Java Fullstack Developer
Addison or Charlotte or Dallas or Phoenix or Raleigh or Richardson or Arizona or North Carolina or Texas or United States
OnsiteFull Time
Infosys
InfosysNYSE: INFY: Global leader in next-generation digital services and consulting.
Requires Java backend development, Vert.x, reactive programming, microservices, event-driven architecture, messaging systems, REST APIs, distributed systems, Docker, Kubernetes, and a bachelor's degree or equivalent experience.
Java, Vert.x, Kafka, RabbitMQ, REST APIs, GitHub Copilot, Docker, Kubernetes, TIBCO, Vitria, webMethods, IBM WBI, SAP NetWeaver
1mo
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Fullstack Developer Senior
United States
RemoteFull Time
KIS Solutions
KIS Solutions: Private technology consulting and software development firm delivering software systems for Fortune 500 companies and startups worldwide.
5+ YOE5+ years software engineering including senior/lead experience; expert Java/Spring Boot backend, React/TypeScript frontend, cloud-native (AWS), Kafka, PostgreSQL, CI/CD and testing practices.
React, Spring Boot, Spring Data JPA, Hibernate, Java, TypeScript, React Query, Zustand, PostgreSQL, REST APIs, AWS, EKS, RDS, S3, Google BigQuery, Apache Kafka, GitHub Actions, ArgoCD, Git, Kubernetes, Spring Batch, AG Grid, Microsoft Entra ID, MSAL, OAuth2/OIDC, MapStruct, Lombok, Terraform, AWS CDK, Cursor, Claude Code, GitHub Copilot, Kiro, Model Context Protocol (MCP), GitOps
2mo
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Senior Software Engineer, Fullstack (Healthcare)
New York City, New York, United States
$225k-$300k/yr OnsiteFull Time
CLEAR
CLEARNYSE: YOU: Provides biometric identity verification and expedited travel security services.
6+ YOE6+ years fullstack experience; deep knowledge of healthcare interoperability (FHIR, HL7 v2), EHR integrations (Epic), secure API/authentication, and identity assurance standards; strong backend/frontend skills.
Python, React, TypeScript, AWS, FHIR, HL7 v2, Epic, Interconnect, TEFCA, QHINs, Carequality, NIST IAL2
4d
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Fullstack Engineer, Seller Insights
New York City, New York, United States
$207k-$230k/yr HybridFull Time
Whatnot
Whatnot: Live shopping marketplace connecting buyers and sellers.
4+ YOE4+ years of generalist software development experience, bachelor's degree in computer science or related field or equivalent experience, and full-stack proficiency across mobile, web, and backend systems.
1mo
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Staff Fullstack Engineer
Menlo Park, California, United States
$236k-$339k/yr HybridFull Time
Snowflake
SnowflakeNYSE: SNOW: Cloud-based data platform for AI, analytics, and data applications.
Senior-level full-stack engineer with experience shipping customer-facing products, building scalable systems, mentoring engineers, and working across frontend and backend stacks.
JavaScript, React, Go, Java
1mo
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Fullstack Engineer, Ambient AI
Mountain View, California, United States
$130k-$180k/yr HybridFull Time
Commure
Commure: AI-native healthcare technology providing revenue-cycle, clinical-workflow, and ambient-AI software to health systems and providers.
Professional software development experience; strong full-stack skills; experience with React/Flutter/Typescript, Python and backend frameworks; familiarity with Docker/Kubernetes and production reliability; BS/MS in CS/Engineering or equivalent.
Python, Javascript, React, Flutter, Flask, Typescript, Docker, Kubernetes, LLMs