23 api engineer jobs at 13 companies in Modesto, 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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Principal API Architect, Product Engineering – Agent‑Ready APIs & Data
Pleasanton, California, United States
$206k-$310k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
12+ YOE12+ years building large-scale backend systems and APIs, 5+ years in senior architecture roles, hands-on TypeScript or Python, OpenAPI/Swagger and API governance experience, MCP familiarity, strong communication and mentoring skills.
TypeScript, Python, REST, GraphQL, SOAP, JSON, XML, WSDL, Swagger, OpenAPI, MCP, Cursor, Claude Code, GitHub Copilot, Data Cloud, SQL, Agent Factory, Trident, Gateways
4w
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Sr. Software Engineer
Pleasanton, California, United States
$96k-$163k/yr HybridFull Time
Blackhawk Network
Blackhawk Network: Provider of branded payment solutions and gift cards.
4+ YOEBA and 4+ years full-stack experience with Java, Python, React, NoSQL (MongoDB) and relational databases, AWS cloud (EC2/RDS/EKS/Lambda/API Gateway), CI/CD (Maven/Gradle/Jenkins/Git), strong algorithms and system design skills.
Java, JDK 11, Python, React, MongoDB, EC2, RDS, EKS, AWS API Gateway, Lambda, Maven, Gradle, Jenkins, Git, REST APIs
2w
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Senior Software Engineer - Python/Agentic AI
Pleasanton, California, United States
$156k-$196k/yr HybridFull Time
BlackLine
BlackLineNASDAQ: BL: Provides cloud software to automate financial close and accounting.
3+ YOEBS CS +5 yrs or MS CS +3 yrs experience with software development; 3+ years building web applications, SaaS, and RESTful APIs; AI-first development experience; strong SQL and distributed systems knowledge; production deployments and on-call experience.
C#, Java, Python, .NET, .NET Core, HTML, JavaScript, CSS, SQL, PostgreSQL, NoSQL, Docker, Kubernetes, API gateway, Kafka, SQS, RabbitMQ, Azure, ASW, GCP
3mo
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AI Engineer
Pleasanton, California, United States
HybridFull Time
Redica Systems
Redica Systems: Provides a regulatory intelligence platform for life sciences industries.
3+ YOE3+ years ML engineering; Python; deploying LLM/Generative AI at scale; experience with OpenAI/Google/Anthropic/Amazon Bedrock APIs and open-source LLMs; vector/graph databases; SQL/NoSQL; Bachelor's in CS/CE.
Python, FastAPI, OpenAI API, Google AI, Anthropic API, Amazon Bedrock, Langchain, LlamaIndex, Langgraph, CrewAI, Microservices, FastAPI, Pinecone, Neo4J, Postgres, Snowflake, DynamoDB, Streamlit, ReactJS, AWS ECS, AWS EKS, AWS SageMaker
3mo
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ServiceNow Developer
Livermore, California, United States
OnsiteFull Time
Edgewater Federal Solutions
Edgewater Federal Solutions: Provides IT and cybersecurity services to federal government agencies.
4+ YOEServiceNow development, ITSM/ITOM, JavaScript/Glide API, SQL, ITIL, dashboards, and ability to manage priorities.
ServiceNow, JavaScript, Glide API, Jelly scripting, AngularJS, SQL, ITIL
3w
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Full Stack Engineer
Pleasanton, California, United States
$123k-$150k/yr OnsiteFull Time
Vagaro
Vagaro: Cloud-based management platform for beauty and wellness businesses.
3+ YOE3+ years software development with backend focus; experience with C#, ASP.NET Core/MVC, RESTful APIs, SQL/NoSQL databases, async/await, Git, and cloud (Microsoft Azure or AWS). Bachelor's in CS or equivalent experience.
C#, Microsoft ASP.NET Core, Microsoft ASP.NET MVC, RESTful APIs, OAuth, JWT, Microsoft SQL Server, MongoDB, async/await, Microsoft Azure, AWS, Git, Docker, React
2mo
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Full Stack Engineer, Senior
Oakland or Seattle or WA or OH or CA or Long Beach or AZ or CO or CT or FL or GA or MD or MN or NV or OR or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills or AL or IL or VA or WI or TX or NY
$103k-$174k/yr HybridFull Time
Ascendiun
Ascendiun: Nonprofit parent overseeing health insurance and clinical service organizations.
5+ YOE5+ years full stack development; BA/BS or equivalent IT experience; React/Vue/Angular; .NET/Java/Node.js/Python APIs; SQL/NoSQL; Azure preferred; Docker; IaC; CI/CD; AI tools; healthcare experience preferred.
React, Vue, Angular, JavaScript, TypeScript, .NET, Java, Node.js, Python, MS SQL Server, Oracle, NoSQL, REST, Azure, AWS, GCP, Docker, Kubernetes, Ansible, Bicep, ARM, Terraform, GitHub, GitLab, Bitbucket, Git
2mo
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Principal AI Engineer - AgenticAI
Santa Clara or Milpitas or Mountain View or East Foothills or Los Altos or Stanford
$176k-$293k/yr HybridFull Time
BMC Software
BMC Software: Provides enterprise software for IT management and automation.
10+ YOE10+ years software development with expert Python; proven experience building, deploying, and operating production AI/LLM systems for B2B customers; cloud deployment experience (AWS/Azure/GCP); agent/LLM/ RAG expertise.
Python, LangGraph, LangChain, LlamaIndex, Pinecone, Weaviate, FAISS, Milvus, AWS SageMaker, Vertex AI, OpenAI, Anthropic, Kubernetes, APIs, LLMs, RAG, LoRA, QLoRA, RLHF, PPO, DPO, GRPO
3mo
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Systems Engineer II- Safety Security
Livermore, California, United States
HybridFull Time, Contract
MGT
MGT: Provides advisory and technology solutions for public sector organizations.
5+ YOEFive+ years in physical security systems; hands-on with IP cameras, access control, intercoms; VMS and security platform experience; strong docs and cross-functional collaboration.
Milestone XProtect, Genetec Security Center, Avigilon Control Center, Verkada Command, Lenel OnGuard, HID/Allegion, Genetec Synergis, AMAG Symmetry, Avigilon Unity, Cloud-based access control, Intrusion detection, Network infrastructure, IP camera installation, APIs
1mo
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Manager II, Engineering
Pleasanton, California, United States
$170k-$230k/yr HybridFull Time
Blackhawk Network
Blackhawk Network: Provider of global branded payment and gift card solutions.
7+ YOE2+ Mgmt7+ years software development experience (or 9+ equivalent), 2+ years managing engineers, expertise in modern JavaScript/TypeScript and React, front-end performance and accessibility, front-end testing, API patterns, cloud experience (AWS preferred), and strong cross-functional communication.
JavaScript, TypeScript, React, Jest, Cypress, Playwright, Next.js, REST, GraphQL, AWS, CI/CD
1mo
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Senior Solutions Architect
Pleasanton, California, United States
OnsiteFull Time
Ciroos
Ciroos: AI platform for automated site reliability engineering.
7+ YOE7+ years in technical pre-sales/solutions architecture/customer engineering for enterprise SaaS; MS in engineering preferred; strong SRE/DevOps/infrastructure background (Kubernetes, observability, incident management, cloud); PoV experience; Python/APIs/Terraform a plus.
Kubernetes, Python, APIs, Terraform, AWS, Azure, GCP
3w
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Senior AI Architect
Livermore, California, United States
$176k-$267k/yr HybridFull Time
Lawrence Livermore National Laboratory
Lawrence Livermore National Laboratory: Develops science and technology for United States national security.
Ability to obtain DOE Q clearance (U.S. citizenship), bachelor\u0000s in computer/engineering or equivalent, significant experience architecting and deploying GenAI/LLM-enabled production systems, cloud/Kubernetes and backend API development (Python, Java, JavaScript, TypeScript).
GenAI, Kubernetes, Python, Java, JavaScript, TypeScript, RESTful APIs, CI/CD, MCP
3w
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Senior Technical Program Manager, Productivity Engineering (Data Platform · AI Transformation)
Pleasanton, California, United States
$164k-$222k/yr OnsiteFull Time
10x Genomics
10x GenomicsNasdaq: TXG: Develops gene sequencing and single-cell analysis laboratory instruments.
5+ YOE5+ years TPM experience owning complex data/platform programs; startup or founder experience preferred; hands-on with data infrastructure (pipelines, warehousing, ELT); fluent in integration patterns; strong written and verbal communication.
Snowflake, Airflow, Kafka, dbt, AWS, Oracle Fusion, Bedrock, ELT, API, ERP, CRM