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2,078 backend api developer jobs at 1,148 companies in United States

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Senior Backend API Engineer
Linthicum, Maryland, United States
OnsiteFull Time
Quevera
Quevera: Veteran-owned custom software engineering firm serving government customers with mission-critical IT solutions.
7+ YOEActive TS/SCI with polygraph required; 7+ years backend development experience with Python, RESTful APIs, Django/Flask, Docker, MariaDB/MongoDB; experience with Git, Jira, Confluence; strong troubleshooting and communication skills.
Python, Django, Flask, MariaDB, MongoDB, JSON, XML, Docker, Git, Jira, Confluence, AWS
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1w
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Backend API Developer
Arlington, Virginia, United States
$119k-$161k/yr OnsiteFull Time
General Dynamics Information Technology
General Dynamics Information TechnologyNew York Stock Exchange: GD: Provider of enterprise IT services and defense solutions.
8+ YOERequires a bachelor's degree in computer science or engineering or equivalent, 8+ years of relevant experience, U.S. citizenship, and Public Trust eligibility. Experience with scalable services, streaming, authorization, containers, cloud, and production operations.
REST, Kafka, Amazon Managed Streaming for Apache Kafka (MSK), Event Hubs, API gateways, service meshes, AWS Lambda, Azure Functions, WebSocket, server-sent events
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4w
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API Backend Developer
Maryland, United States
OnsiteFull Time
One Federal Solution
One Federal Solution: Professional services firm providing contract support to government agencies.
6+ YOE6+ years developing enterprise applications with Python, Django, GraphQL, REST APIs, and relational databases; experience with AI extraction from scientific publications and accessibility (Section 508/WCAG).
Python, Django, GraphQL, REST APIs, SQL Server, MySQL, PostgreSQL, Git, GitHub, Docker, Linux, HTML, XHTML, CSS
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4w
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Backend API & Infra Engineer
United States
RemoteFull Time
JobPixel
JobPixel: N enterprise video platform for HR, talent acquisition, and marketing teams using authentic short-form video.
Deep backend experience with Laravel and AWS, database optimization (MySQL/RDS, Redis/ElastiCache, InfluxDB), Elastic Stack/Grafana/Logstash, IaC (Pulumi/Terraform), and video/AI experience.
Laravel, AWS, MySQL, RDS, Redis, ElastiCache, InfluxDB, Elastic Stack, Grafana, Logstash, Pulumi, Terraform, Node.js, React
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2mo
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Backend Developer (Data Layer / API Specialist)
United States
$75k-$110k/yr RemoteFull Time
Blue Acorn iCi
Blue Acorn iCi: Digital experience consulting firm helping global brands improve customer experiences, commerce, and customer intelligence.
Strong backend development experience with Java/Python/Node.js/Go, REST/GraphQL APIs, SQL/NoSQL databases, data pipelines/ETL, cloud platforms (AWS/Azure/GCP), CI/CD, containerization, and observability.
Java, Python, Node.js, Go, REST, GraphQL, PostgreSQL, MySQL, MongoDB, DynamoDB, OpenAPI, Swagger, AWS, Azure, GCP, ETL/ELT, CI/CD, Git, Docker, Kubernetes, Kafka, Kinesis, Pub/Sub
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3w
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Sr. II Backend Engineer, Mobile API
San Mateo, California, United States
$176k-$220k/yr HybridFull Time
Slickdeals
Slickdeals: Privately owned online deal-sharing community helping shoppers find, evaluate, and save on products and services.
Extensive backend development experience with PHP, RESTful or GraphQL APIs, relational databases, distributed systems, cloud platforms, containers, CI/CD, production monitoring, and cross-team technical leadership.
PHP, Vue, TypeScript, MySQL, PostgreSQL, RabbitMQ, Valkey, Redis, Kafka, Firebase Cloud Messaging, APNs, Docker, Kubernetes, GitHub Actions, JWT, RESTful, GraphQL, iOS, Android, CI/CD
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1w
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Backend Engineer
London or New York City or Paris
HybridFull Time
SeedLegals
SeedLegals: Private UK legal-technology platform that automates fundraising, cap-table, and business legal documents for startups and small businesses.
Mid-level backend engineering role requiring Kotlin and Spring experience, high-performance API development, software engineering best practices, test-driven development, code review, and full lifecycle ownership.
Kotlin, Spring, Claude, LLMs, JVM, APIs
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1mo
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Backend API Engineer Technical Lead II
Charlotte or Malvern
HybridFull Time
Vanguard
Vanguard: Global investment management firm owned by its client funds.
8+ YOE8+ years related experience, 3+ years Node.js, proficient in TypeScript and NestJS, experience with AWS, CI/CD, GitHub Actions, REST/Spring Boot/Java a plus; undergraduate degree or equivalent; strong communication and mentoring skills.
Node.js, Typescript, NestJS, Visual Studio Code, RESTful Services, Spring Boot, Java, CI/CD Pipeline, Github Actions, Git/GitHub, JIRA, AWS ECS Fargate, AWS EKS, AWS Lambda, XCode, SWIFT, Android Studio
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3mo
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Senior Backend Developer
United States
$75k-$96k/yr OnsiteFull Time
SIL Global
SIL Global: SIL Global is a faith-based nonprofit helping minority-language communities through translation, literacy, education, research, and language technology.
5+ YOE5+ years backend development; Go and PHP; AWS, Kubernetes, Docker; API design; Agile; US work eligibility.
AWS, Kubernetes, Docker, Go, PHP, APIs
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1mo
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Backend Software Engineer (API-focused)
Katy, Texas, United States
$110k-$120k/yr OnsiteFull Time
Off Duty Management
Off Duty Management: Private software and administrative services managing off-duty law-enforcement programs for agencies, officers, and community businesses.
3+ YOE3+ years backend experience with Python and FastAPI, PostgreSQL, Celery, Kubernetes/AKS, pytest, OAuth2/JWT; experience with API design, security, and CI/CD.
FastAPI, PostgreSQL, Celery, AKS, Azure, Pydantic, Alembic, OAuth2, JWT, pytest, Git, Docker, OpenAPI/Swagger, Redis, RabbitMQ, Prometheus, Grafana, OpenTelemetry, Terraform, Helm, Kubernetes, Azure Key Vault, Azure Container Registry, Azure Monitor / App Insights
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2mo
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Backend Developer
Boise, Idaho, United States
OnsiteFull Time
Landlord Tech
Landlord Tech: Private Boise software helping property owners and managers manage pets, assistance animals, and residential rental compliance.
4+ YOE4+ years backend development experience with Java; experience with PostgreSQL, REST APIs, Git, and Unix environments; strong problem-solving, communication, and collaborative skills.
Java, Python, PostgreSQL, Spring Boot, FastAPI, Node.js, Express, AWS, Stripe, Git, Unix, REST APIs
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1mo
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Backend Engineer
United States or Denmark
RemoteFull Time
Clinical Ink
Clinical Ink: Private U.S. life-sciences technology providing eSource and digital clinical-trial solutions to sponsors, CROs, researchers, and patients.
Backend development with strong programming fundamentals; experience with Python, APIs, databases/SQL, version control, testing; familiarity with healthcare data and regulated environments preferred.
Python, FastAPI, SQLAlchemy, Postgres, SQL, AWS, CloudWatch, Sentry, FHIR
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1mo
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Founding Backend Engineer
New York City, New York, United States
OnsiteFull Time
Hera
Hera: Private Medicare-covered care-management coordinating care for older adults and their families.
Experienced backend engineer with strong systems design, cloud and database experience, API and SDK development, security/compliance awareness, and ownership in early-stage environments.
AWS, SQL, APIs, SDKs
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3mo
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Backend Engineer
San Francisco, California, United States
$190k-$230k/yr OnsiteFull Time
Lapel
Lapel: Private software building customer-operations infrastructure for internet businesses.
3+ YOE3+ years backend or software engineering; API design; backend architecture; Node.js/Python/Go; PostgreSQL/MySQL; scalable systems; customer-focused.
Node.js, Python, Go, PostgreSQL, MySQL, TypeScript, Temporal, Pulsar
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2mo
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Backend Software Engineer, API Multicloud
San Francisco, California, United States
$293k-$385k/yr HybridFull Time
OpenAI
OpenAI: AI research and deployment focused on beneficial AGI.
7+ YOE7+ years engineering experience; proficiency in backend languages (Python, Go, Rust, Typescript); experience with distributed systems, cloud services, developer tools, and production service ownership; strong communication and system-design skills.
Python, Go, Rust, Typescript, AWS, OpenAI Responses API, Codex
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3w
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Backend Engineer
Knoxville, Tennessee, United States
RemoteFull Time
Regal Cinemas
Regal Cinemas: Major movie theater chain and cinema operator.
3+ YOERequires 3+ years of backend software engineering experience, strong C# and .NET proficiency, RESTful API development, relational databases, cloud platforms, CI/CD, and end-to-end feature ownership.
C#, .NET, React, Next.js, RESTful APIs, SQL Server, CosmosDB, Azure, React Native, Redis, Datadog, Serilog, Application Insights, Microsoft SQL Server
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1w
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Backend Engineer
Denver or Seattle or Washington or San Francisco or Los Angeles or Arvada or San Francisco or Nashville or Denver or Santa Fe or New Orleans or San Diego or Bozeman or New York City
$120k-$180k/yr HybridFull Time
Quindar
Quindar: Automation First. Mission Ready. Mission management software delivering a common operating picture, system-of-systems integration, and resiliency across commercial and government space missions.
3+ YOERequires Python backend development, AWS, GraphQL, Docker, Terraform, APIs, Kubernetes, Git, a computer science bachelor's degree, and 3+ years of experience; U.S. person status and security clearance eligibility required.
Python, AWS, GraphQL, Docker, Terraform, OpenAI, Anthropic, AskSage, Kubernetes, AWS Lambda, Amazon ECS, Amazon EKS, Amazon CloudWatch, Amazon S3, Amazon EFS, Amazon EBS, Amazon EC2, Amazon RDS, Git, GitHub, GitLab, CI/CD
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3w
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Backend Developer
United States
RemoteFull Time
CelebriOS
CelebriOS: B2B SaaS helping businesses make decisions, streamline operations, and gain value from data.
3+ YOE3+ years backend experience; proficiency in Python/Java/Node.js/Go/C#; experience with REST/GraphQL, SQL, API security, Git, testing and deployment workflows.
Python, Java, Node.js, Go, C#, REST, GraphQL, SQL, Git, AWS, Azure, Google Cloud, Kubernetes, CI/CD, containers, message queues
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2mo
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Backend Engineer
San Francisco, California, United States
$135k-$250k/yr HybridFull Time
Fable Security
Fable Security: Private cybersecurity software helping enterprises assess and change employee security behavior with AI.
3+ YOE3+ years developing backend software; experience designing, implementing, and owning production services; familiarity with relational DBs (Django or similar), APIs, ETL/data pipelines, distributed systems, and cloud tooling (AWS, Terraform, EKS).
Kafka, Spark, Airflow, Django, AWS, Terraform, EKS, GenAI
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1w
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Backend Developer
Istanbul or San Francisco
HybridFull Time
PlusMinusOne
PlusMinusOne: Mobile startup studio developing and marketing its own mobile apps for users worldwide.
3+ YOE3+ years building production backend services with Node.js and TypeScript; requires PostgreSQL, Redis, REST APIs, Docker, AWS, and scalable system design experience. Kubernetes and Terraform experience are valued.
Node.js, TypeScript, NestJS, PostgreSQL, Redis, Docker, Kubernetes, Terraform, AWS, EKS, RDS, S3, IAM, Secrets Manager, Prometheus, Grafana, Kafka, Debezium, ClickHouse, BigQuery, ArgoCD, Karpenter, KEDA, LLM APIs, RAG, Python
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