501 junior backend developer jobs at 271 companies in United States

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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
1mo
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Backend Engineer
United States or Europe
$90k-$120k/yr RemoteFull Time
Oneleet
Oneleet: Cybersecurity and compliance platform helping companies achieve SOC 2, ISO 27001, and related frameworks.
2+ YOE2+ years experience with Go and REST APIs, PostgreSQL query optimization, building integrations, strong communication, startup experience, and SaaS backend architecture experience.
Go, PostgreSQL, gRPC, TypeScript, REST
2w
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Backend Engineer
New York City, New York, United States
OnsiteFull Time
Portra
Portra: Insurance infrastructure providing rules-driven quote-bind-issue systems for carriers, MGAs, brokers, and program administrators.
2+ YOERequires 2+ years building production backend systems, a master's degree or equivalent experience, Python, SQL and NoSQL, cloud deployment, Docker, Kubernetes, APIs, and CI/CD experience.
Python, AWS, GCP, Docker, Kubernetes, SQL, NoSQL, CI/CD, Flask
1mo
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Backend Engineer, Markets
New York, New York, United States
OnsiteFull Time
Polymarket
Polymarket: Private blockchain-based prediction market platform where users trade on outcomes of real-world events.
1+ YOE1+ years backend experience, proficiency in TypeScript/Python/Go, third-party API integration, Linux and cloud tooling comfort, experience shipping production code; AI-assisted development familiarity preferred.
TypeScript, Python, Go, Claude Code, Codex, Cursor, Linux, Kafka, RabbitMQ
4d
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Associate Backend Engineer
New York City, New York, United States
$95k-$115k/yr HybridFull Time
Eulerity
Eulerity: AI-powered marketing automation serving franchise and multi-location brands with digital advertising and local marketing tools.
1+ YOERequires 1–3 years of backend development experience, including at least 1 year with Java; AI-agent experience, API integration, LLM or AI workflow familiarity, collaboration, and NYC tri-state residency.
Java, Claude, GitHub Copilot, Cursor, LLMs, AI agent frameworks, Anthropic, Google, OpenAI
1mo
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Backend Engineer
United States
RemoteFull Time
Gaya
Gaya: AI browser-extension software for insurance agents, brokers, wholesalers, and underwriters that automates quoting data entry.
1+ YOE1+ years development experience, proficiency with Node.js and JavaScript, familiarity with REST APIs, databases, unit testing, interest in RPA/AI and cloud platforms.
Node.js, JavaScript, React, Python, PostgreSQL, Supabase, AWS, GCP, Azure
1mo
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Senior Kotlin Backend Developer
United States
OnsiteFull Time
Cognizant
CognizantNASDAQ: CTSH: Global professional services providing technology and consulting services.
Several years of backend experience with Kotlin and Spring Boot, proficiency in Gradle, Azure DevOps, Docker, and Kubernetes; strong problem-solving and communication skills; experience mentoring junior developers.
Kotlin, Spring Boot, Gradle, Azure DevOps, Docker, Kubernetes, Android, AWS, Azure
1mo
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Backend Engineer - Connectivity
San Mateo, California, United States
$125k-$160k/yr OnsiteFull Time
Verkada
Verkada: Physical security platform for enterprise buildings and facilities.
1+ YOE1+ years backend experience, BS/MS in CS or related, proficiency in Python and/or Go, experience with Redis/DynamoDB/Postgres, Kafka/SQS, Terraform/Kubernetes, and REST APIs.
Redis, DynamoDB, Postgres, Kafka, SQS, Terraform, Kubernetes, Python, Go, REST APIs
2w
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Backend Engineer (TypeScript)
United States
RemoteFull Time
Wynd Labs
Wynd Labs: Private Canadian web-data providing public web data for research, analytics, business intelligence, and AI.
2+ YOEBachelor’s degree or equivalent experience, 2+ years in backend software engineering, strong TypeScript skills, and experience with production metrics, monitoring, alerting, debugging, clean code, and automated tests.
TypeScript, Go, Datadog, OpenObserve, Slack, Playwright
3w
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Senior Backend Engineer
United States
$140k-$180k/yr RemoteFull Time
Popl
Popl: Private B2B SaaS platform helping revenue teams capture, enrich, and sync leads at events.
4+ YOERequires 4+ years of backend experience, Node.js, TypeScript, AWS or Google Cloud, SQL, RESTful APIs, scalable systems experience, attention to detail, and strong written and verbal communication.
Node.js, TypeScript, AWS, Google Cloud, SQL, RESTful APIs
3d
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Backend Engineer, Core APIs
United States
$130k-$180k/yr RemoteFull Time
Fingerprint
Fingerprint: B2B SaaS platform providing device intelligence and fraud-prevention tools to businesses.
2+ YOE2+ years of backend development experience with Go and/or Node.js, scalable systems, APIs, real-time processing, microservices, SQL, and databases. English proficiency and collaboration skills required.
GoLang, Node.js, SQL, DynamoDB, Redis, Elasticsearch, Git, IDEs, shell scripting, CI/CD, Terraform, AWS CloudFormation, Golang, NodeJS, TypeScript, Express, ClickHouse, dbt, Snowflake, BigQuery, Redshift, Databricks, Datadog, Docker, Kubernetes
1mo
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Backend Software Engineer
Chantilly, Virginia, United States
OnsiteFull Time
Blue Ridge Dynamics
Blue Ridge Dynamics: Software development and engineering services serving federal government and commercial businesses with custom digital solutions.
2+ YOE2+ years backend development experience with Node.js/TypeScript, RESTful APIs, relational databases, Git, testing, and secure coding; strong problem-solving and communication skills.
Node.js, TypeScript, PostgreSQL, JavaScript, NestJS, Fastify, Express, MySQL, Git, Docker, Kubernetes, AWS, Azure, Google Cloud, OAuth 2.0, OpenID Connect, JWT, Drizzle ORM, CI/CD
2w
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Backend Engineer
New York, New York, United States
RemotePart Time
Qureos
Qureos: AI-powered recruitment platform connecting talent with employers.
Proficiency in Python, Java, Node.js, or Ruby; web frameworks and RESTful APIs; SQL and NoSQL databases; cloud platforms; problem-solving and communication skills.
Python, Java, Node.js, Ruby, RESTful API, SQL, NoSQL, AWS, Google Cloud, Azure, Agile, Git, Docker, CI/CD
2mo
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FHIR Backend Developer | .NET
Amsterdam or United States or Europe
€5k-€6k/mo HybridMultiple Commitments Available
Firely
Firely: Global digital healthcare providing software, training, and consultancy to bring FHIR to life
2+ YOEProficient in .NET/C#, REST APIs, MS SQL Server and/or MongoDB, AWS or Azure, JSON/XML handling, Git and Jira, experience using AI tools, authorized to work in the Netherlands, fluent English; 2+ years .NET backend experience preferred.
.NET, C#, REST APIs, Microsoft SQL Server, MongoDB, AWS, Azure, JSON, XML, AI tools, Git, Jira, GitHub Projects
2w
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Backend Engineer, Link (US)
New York City or Seattle or San Francisco or Toronto
HybridFull Time
Stripe
Stripe: Financial infrastructure platform for online businesses and enterprises.
2+ YOERequires 2–10+ years of industry software engineering experience, strong coding and collaboration skills, autonomy, and interest in backend work across varied technologies and stacks.
1mo
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Backend Software Developer
Wayne, Pennsylvania, United States
HybridFull Time
PowerPay
PowerPay: AI-powered point-of-sale financing platform for home improvement and elective healthcare, serving consumers, contractors, and providers.
Experience building backend services and APIs using Ruby/Rails, Python or NodeJS; familiarity with databases, integrations (SFTP/FTP, OAuth2, OIDC), security (TLS, SSH), Linux/Docker, testing and API tools.
Ruby, Ruby on Rails, Python, NodeJS, SFTP, FTP, OAuth2, OIDC, TLS, SSH, Postgresql, Mysql, MariaDB, rSpec, Postman, Linux, Docker, ReactJS, NewRelic, AWS, CI/CD
1w
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Software Developer - Backend
Chantilly, Virginia, United States
OnsiteFull Time
LT Consulting
LT Consulting: Minority-owned IT consulting firm delivering software, systems, database, and integration services to Intelligence Community customers.
Requires active TS/SCI clearance with polygraph, bachelor's degree, backend API development experience, Java, Spring Boot, Node, Express, Python, Flask or Django, databases, Git, Agile, JIRA, and Confluence.
Java, Spring Boot, Node, Express, Python, Flask, Django, RESTful APIs, PostgreSQL, MySQL, Oracle, OAuth 2.0, OpenID Connect, Gradle, Maven, NPM, Pip, Git, JIRA, Confluence, AWS, Amazon EC2, Amazon RDS, Amazon S3, Amazon SQS, AWS Lambda, Docker, Kubernetes, Prometheus, Grafana, ELK, Redis, Memcached
3w
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Backend Software Engineer (Golang)
San Diego, California, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designing and manufacturing consumer electronics, software, and digital services.
Backend software engineering role developing satellite connectivity services for Apple devices; the posting does not specify education, experience, or certification requirements.
Golang
4d
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Backend Developer 1
Seffner, Florida, United States
OnsiteFull Time
SE Independent Delivery Services
SE Independent Delivery Services: Private furniture delivery serving national retailers through independent owner-operators across the southeastern United States.
Working knowledge of C#, .NET, Entity Framework Core, Microsoft SQL Server, SQL, REST APIs, JSON, and Git; understanding of object-oriented programming and strong analytical and communication skills.
C#, .NET, .NET Core, .NET 6, Entity Framework Core, Microsoft SQL Server, SQL, REST APIs, JSON, Git, Microsoft Azure
2w
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Backend Software Engineer
San Francisco, California, United States
$165k-$225k/yr OnsiteFull Time
David AI
David AI: Audio data research creating datasets for AI labs and Fortune 100 companies.
2+ YOE2+ years of backend engineering experience; scalable systems, APIs, and data pipelines; production-grade infrastructure; customer-focused delivery; bonus experience in DSP, speech, ML deployment, or engineering leadership.
Node.js, tRPC, PostgreSQL, AWS, Trigger.dev, WebRTC, FFmpeg, TypeScript