24 backend software intern jobs at 16 companies in Vallejo, CA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
1mo
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Backend Engineering Intern
San Francisco or Istanbul or Ankara
HybridFull Time, Internship
PlusMinusOne
PlusMinusOne: Develops and markets a portfolio of utility and lifestyle apps
0+ YOE3rd/4th-year CS or engineering student with backend interest; hands-on backend experience via coursework/projects/internships; OOP, data structures, algorithms, and Git familiarity; strong analytical and communication skills.
Git
2mo
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Software Engineer- Backend Intern (Fall 2026)
San Francisco, California, United States
$29/hr OnsiteInternship
Astranis
Astranis: Builds and operates small geostationary communications satellites.
Pursuing a CS degree; strong Python; databases and pub/sub/streaming experience; open to applicants not matching all criteria.
Python, PostgreSQL, RabbitMQ, Apache Flink, Kubernetes
2mo
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Software Engineer Intern - Backend Focused - Winter 2027
New York or San Francisco or Seattle
OnsiteInternship, Temporary
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
Current undergraduate/graduate student in CS or related field, previous software engineering internship experience with Python, backend programming skills, strong communication and critical thinking.
Python, Slack, Microsoft 365
1mo
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Software Engineering Intern
Palo Alto, California, United States
$8k-$10k/mo OnsiteInternship
GenBio AI
GenBio AI: Developing AI foundation models to simulate and program biology.
0+ YOECurrently enrolled in a full-time Master’s or Ph.D program; strong CS fundamentals; frontend React/TypeScript; backend with FastAPI; self-starter in fast-paced startup.
React, TypeScript, FastAPI, Python, REST, SQL, NoSQL, Docker
2mo
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Software Engineer Intern (Fall / Winter 2026)
San Francisco or Canada
RemoteInternship
Cohere
Cohere: Provides enterprise-grade large language models and AI software platforms.
Enrolled in a post-secondary program; available for a full-time 3-6 month internship; remote; roles across frontend, backend, full-stack, and infrastructure.
2mo
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SWE Intern
San Francisco, California, United States
OnsiteInternship
Chasi
Chasi: AI revenue engine for construction equipment dealers.
1+ YOE1+ internships in production software; full-stack TS/React with backend; experience with LLMs; real-time systems; strong architectural judgment; customer-facing; ownership.
Next.js, TypeScript, PostgreSQL, Redis, Twilio, LiveKit, OpenAI, Anthropic, Deepgram, Vector Databases
1w
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Software Engineer Intern
San Francisco, California, United States
$11k/mo OnsiteFull Time
Serval: AI platform for automating IT and enterprise service workflows.
Currently pursuing a technical degree (graduation 2026–2028), strong CS fundamentals, familiarity with a backend language (Go/Java/Python), clear communication, and eagerness to learn in a startup environment.
Go, gRPC, Kubernetes, React, TypeScript, AWS, Terraform
3w
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Software Engineer, Growth
San Francisco, California, United States
OnsiteFull Time
Broccoli
Broccoli: AI agents for home service business front-office operations.
Strong software engineering fundamentals, production-quality code, full-stack with backend focus, experience building internal tools or growth systems, comfortable in ambiguity and cross-functional work.
ServiceTitan
2mo
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Software Engineer (Platforms & Integrations)
San Mateo or United States
$123k-$183k/yr HybridFull Time
Salma Health
Salma Health: Delivers integrated brain health clinical care and diagnostic technology.
3+ YOE3–5 years in software engineering; backend systems and APIs; AWS; multi-language tech; integrations with EHR/CRM; internal tooling; production systems in fast-paced environments.
Node.js, Python, Ruby, AWS
1mo
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Software Engineer, Internal Applications - Enterprise
San Francisco, California, United States
$293k-$342k/yr RemoteFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
Experienced in building production frontend and backend systems, designing interfaces for operational/internal tools, strong backend fundamentals (APIs, data modeling, integrations), security-conscious design, and cross-functional collaboration.
IAM, ITSM, RBAC, Zero Trust, APIs, SOC 2, ISO 27001, FedRAMP, NIST
2mo
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Staff Software Engineer
Boston or Kyiv or Seattle or Lviv or San Francisco
HybridFull Time
DataRobot
DataRobot: Provides an enterprise platform for building and governing AI.
7+ YOE7-10+ years in engineering with 5+ years in infrastructure/platform/backend; Kubernetes internals; Python/Go; multi-cloud or hybrid deployments; IaC; GitOps; strong mentoring and leadership.
Kubernetes, Python, Go, Helm, Terraform, Pulumi, Kyverno, Cilium, GitOps, CI/CD
1mo
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Staff+ Software Engineer, GRC Platform
San Francisco or New York City or Seattle
$405k/yr HybridFull Time
Anthropic
Anthropic: Developing safe and reliable artificial intelligence systems.
8+ YOE8+ years building backend systems, data pipelines, or internal platforms; proficiency in Python or Go; experience with cloud platforms and infrastructure-as-code; strong systems thinking and experience with integrations or data infrastructure.
Python, Go, AWS, GCP, Azure, Claude, ServiceNow, Vanta, Drata, OneTrust, REST APIs, webhooks, CI/CD, ELT, ETL, infrastructure-as-code, version control
1w
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Senior Software Engineer (CALC engine) (copy)
Mountain View or San Francisco or Bucharest or Cluj-Napoca or Paris or Munich or London or Pune or Sydney or United States
$220k-$230k/yr RemoteFull Time
Aera Technology: A Decision Intelligence platform building AI-driven decision automation and analytics.
Expert backend Java engineer with low-latency performance, JVM internals, threading and GC knowledge, language/design skills, and experience building high-performance calculation engines.
Java, JVM, Spring, Claude Code
1mo
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Member of Technical Staff, Software Engineer
San Francisco, California, United States
OnsiteFull Time
Plato
Plato: Building foundational infrastructure to train specialized AI agents.
Experience building backend systems, data pipelines, product surfaces, and internal tools for AI/research workflows; strong product engineering judgment, emphasis on correctness, observability, and iteration speed.
2mo
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Staff Software Engineer, AI Platform
San Francisco, California, United States
$231k-$340k/yr HybridFull Time
Harvey
Harvey: AI platform for legal research and document analysis.
8+ YOE8+ years backend systems; 1+ year AI/ML; leadership across teams; multi-model AI in production; context management; internal platform tooling.
2mo
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AI Agent Infrastructure Lead
San Francisco, California, United States
$230k-$260k/yr OnsiteFull Time
Sphere
Sphere: AI-powered global tax compliance and automated filing software.
Experience building production software; AI agents or internal developer tooling; backend systems; safety and autonomy; strong initiative and attention to detail.
Python, CI/CD, Infrastructure
1mo
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Staff AI Application Engineer, Product
San Francisco or Seoul
$220k-$240k/yr HybridFull Time
Twelve Labs
Twelve Labs: AI foundation models for video search and human-like understanding.
Strong backend engineering in Python or Go, system design and 0→1 internal product experience, experience with large unstructured datasets, full-stack capability, and familiarity with cloud data platforms, data governance, and access control.
Python, Go, Claude Code
4w
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Full Stack Engineer - Internal Audit
Bengaluru or San Francisco
OnsiteFull Time
Cloudflare
CloudflareNYSE: NET: Provides security and performance services for internet properties.
5+ YOE5+ years full stack engineering experience; strong backend (Python, Go, Node.js) and frontend (React, TypeScript); SQL/NoSQL, API design, cloud-native architectures (Cloudflare Workers, AWS/GCP); familiarity with data pipelines, LLMs/ML, and audit/risk concepts.
Python, Go, Node.js, React, TypeScript, SQL, NoSQL, REST, GraphQL, Cloudflare Workers, KV, D1, AI Gateway, AWS, GCP, LLMs, ETL, ELT