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170 senior application developer jobs at 108 companies in Simi Valley, CA

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SENIOR APPLICATION DEVELOPER
Los Angeles County, California, United States
$8k-$11k/mo HybridFull Time
County of Los Angeles
County of Los Angeles: Provides public services and healthcare to Los Angeles County residents.
Technical lead experience designing and maintaining multi-cloud enterprise applications; proficiency with APEX, Laravel/PHP, cloud platforms, SQL/PLSQL, Atlassian tools, and enterprise reporting; ability to translate business needs into system designs.
OCI, AWS, Azure, Atlassian, Cognos, Oracle APEX, Laravel (PHP), HTML, JavaScript, CSS, Jira, Jira Service Management, Confluence, AWS Connect, IAM, Kubernetes, SQL, PL/SQL, Power BI Gateway, eCAPS, eHR, Microsoft PowerPoint, Microsoft Visio, Microsoft SharePoint
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1w
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Senior Mobile Application Developer
Burbank, California, United States
$110k-$205k/yr HybridFull Time
Warner Bros. Discovery
Warner Bros. DiscoveryNasdaq: WBD: Produces and distributes multimedia entertainment content and news worldwide.
5+ YOE5+ years mobile application development experience with expert Kotlin/Java and strong Swift; experience with Android, iOS/tvOS/macOS platforms, app store administration, CI/CD, and video streaming technologies.
Kotlin, Java, Swift, SwiftUI, UIKit, Combine, Swift Concurrency, Xcode, TestFlight, App Store Connect, Android SDK, Google Play Console, Bitmovin, DRM, Google Cast, GitHub, Bitrise
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Senior Application Security Engineer
Los Angeles or New York or San Francisco
$165k-$190k/yr HybridFull Time
Tatari
Tatari: A platform for buying and measuring TV advertising campaigns.
Production Python experience, strong hands-on application security (SAST/DAST/SCA), threat modeling, CI/CD automation, container/AWS/Kubernetes security, API security, and LLM risk mitigation.
Python, Java, Rust, AWS, Kubernetes, CI/CD, SAST, DAST, SCA, OWASP Top 10, API Security Top 10, ASVS, SPVS, AISVS, LLM
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Senior Application Engineer I
Boston or Chicago or New York City or Los Angeles or Washington
$133k-$183k/yr HybridFull Time
Kirkland & Ellis
Kirkland & Ellis: Provides legal services for corporate, litigation, and transactional matters.
8+ YOE8+ years in advanced application support/configuration, experience with e-discovery platforms, APIs/ETL, Microsoft SQL, Linux, REST APIs, PowerShell; bachelor's in CS or equivalent; strong problem solving and communication.
Relativity Server/One, Reveal, BrainSpace, Microsoft SQL, Linux, REST APIs, PowerShell, ETL
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Senior Application Security Engineer
Seattle or Los Angeles or San Francisco or California or Colorado or Connecticut or Delaware or Hawaii or Illinois or Maine or Maryland or Massachusetts or Minnesota or Nevada or New Jersey or New York or Rhode Island or Virginia or Washington or Washington DC or United States
$141k-$259k/yr OnsiteFull Time
Nordstrom
Nordstrom: Operates luxury department stores and off-price retail outlets.
4+ YOE4+ years in application security or related field; experience shipping security tooling and automation; expert threat modeling, security design review, and manual code review; fluent reading/writing code in Java, Kotlin, C#, or Python; cloud-native and LLM/AI security knowledge.
Java, Kotlin, C#, Python, SAST, SCA, DAST, secrets scanning, GitHub Advanced Security, JFrog Artifactory, AWS, GCP, Azure, Kubernetes, LLM
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Sr. WMS Application Engineer
Carson, California, United States
OnsiteFull Time
Custom Goods
Custom Goods: Provides third-party logistics, warehousing, and transportation services.
5+ YOESenior WMS application engineering with experience in configuring SaaS/On-Premise WMS, API/EDI integrations, SQL reporting, and warehouse automation. Strong communication and project leadership required.
SQL, SSRS, Power BI, EDI, API, WMS, ERP, TMS, Stored Procedures, Warehouse Automation
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Sr. Application Software Engineer
Hawthorne, California, United States
$165k-$230k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
5+ YOEBachelor's degree or equivalent experience; 5+ years software development (or 7+ years without degree); 3+ years full stack development; proficiency with Python, C#.NET, Go, Scala, or Java; experience with CI/CD, containers, Kubernetes, databases, and in-stream data processing.
Python, C#.NET, Go, Scala, Java, Make, Bazel, Pants, Buck, Gradle, pip, npm, Terraform, Ansible, Puppet, Apache Kafka, RabbitMQ, ActiveMQ, Docker, Kubernetes, Angular, React, PostgreSQL, SQL Server
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Staff Integration & Application Developer
Austin or Los Angeles County
$137k-$188k/yr OnsiteFull Time
Procore
ProcoreNYSE: PCOR: Cloud-based construction management software for projects and teams.
7+ YOE7+ years in integration engineering for finance/SaaS; expert Workato experience, strong Python or JavaScript, SQL, REST/SOAP/Webhooks; finance domain knowledge; architecture, governance, and AI-assisted development experience.
Workato, Workato AI Agents, MuleSoft, Boomi, SnapLogic, NetSuite, Salesforce, Zuora, Certinia, Coupa, Zip, Python, JavaScript, SQL, REST, SOAP, Webhooks, Jira
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Senior Application Engineer & Customer Success
El Segundo, California, United States
HybridFull Time
Roboze
Roboze: An advanced materials and additive manufacturing serving aerospace and defense customers.
Engineering degree, customer-facing technical experience, CAD proficiency, project management and strong communication; up to 50% U.S. travel; familiarity with 3D printing and advanced polymers preferred.
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3w
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Senior Application Data Engineer
Los Angeles, California, United States
$160k-$200k/yr OnsiteFull Time
K2 Space
K2 Space: Develops high-power satellite platforms for heavy-lift launch vehicles.
8+ YOE8+ years experience designing data models, ETL/data pipelines, and database solutions; expertise with relational and NoSQL databases, cloud-hosted DBs, CI/CD, Docker, Kubernetes; strong communication and mentoring skills.
MS SQL, PostgreSQL, Snowflake, AWS RDS, AWS PostgreSQL, CI/CD, Docker, Kubernetes, AWS EKS, NoSQL, Amazon DynamoDB, MongoDB, REST API, AWS Redshift
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1w
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Sr Application Security Engineer
Bellevue or Ventura
$114k-$208k/yr OnsiteFull Time
The Trade Desk
The Trade DeskNASDAQ: TTD: Cloud-based programmatic advertising platform for data-driven media buying.
6+ YOE6+ years application security experience, software development skills (C#, Java, Python, Go, JavaScript), SAST/DAST/SCA and CI/CD integration, Kubernetes and cloud security, threat modeling, vulnerability management, and AI/ML security experience.
C#, Java, JavaScript, Python, Go, SAST, DAST, SCA, secrets management, GitHub Actions, GitLab, Jenkins, ArgoCD, STRIDE, PASTA, Kubernetes, Docker, Helm, Istio, AWS, GCP, Azure, LLM
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1mo
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Senior Modern Desktop Application Engineer
New York City or Boston or Chicago or Washington or Los Angeles or San Francisco or San Jose
$135k-$232k/yr HybridFull Time
Ropes & Gray
Ropes & Gray: Provides legal representation and advisory services to global corporations.
5+ YOEBachelor's degree preferred,5+ years supporting Microsoft 365 stack in enterprise,expertise in Teams/Outlook/OneDrive/Litera,PowerShell/Group Policy/Intune/Azure AD,strong analytical,communication,and leadership skills.
Microsoft 365, Office, Teams, Outlook, Outlook New, OneDrive, Litera, PowerShell, Group Policy, Intune, Azure AD
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3mo
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Application Engineer – Multi-Physics Simulation
Ghent or Calabasas
OnsiteFull Time
Keysight Technologies
Keysight TechnologiesNew York Stock Exchange: KEYS: Manufactures hardware and software for electronic test and measurement.
Bachelor's or Master’s in EE/ME/Physics, strong understanding of electronic design workflows, experience with engineering simulation/EDA tools, ability to translate engineering problems into product requirements, customer-facing and product ownership experience, excellent English.
Electronic Design Automation (EDA), Keysight ADS, Cadence Allegro, Cadence Celsius, Siemens FloTherm, Siemens NX, Ansys Mechanical / Icepak
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2mo
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Senior DevOps Engineer
Long Beach, California, United States
$159k-$268k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
3+ YOE3+ years in application development with Python/Go/JavaScript; large-scale data systems; Terraform; Docker/Kubernetes; networking; DevOps expertise.
Terraform, Docker, Kubernetes, Prometheus, Grafana, ELK, Kafka, SAST, SCA, CI/CD, Cloud, Linux Networking
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Application Engineer - Single Use Bag Solutions
Camarillo, California, United States
$120k-$150k/yr OnsiteFull Time
SaniSure
SaniSure: Designs and manufactures single-use bioprocessing and fluid management systems.
7+ YOEBachelor's in engineering required (master's preferred),7+ years engineering experience in biotech/pharma/medical device, single-use bag expertise, CAD proficiency, supplier qualification and RCA/CAPA experience.
CAD, Microsoft Office
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1mo
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Digital Solutions Application Engineer - West Region (66159)
San Diego or City of Industry or Pleasanton or Wilsonville or Tukwila or Littleton or Salt Lake City
$143k-$252k/yr HybridFull Time
Eaton
EatonNYSE: ETN: Manages electrical, hydraulic, and mechanical power systems globally.
7+ YOEBachelor's in EE/ME or related STEM, 7+ years application engineering/technical pre-sales experience in electrical power/controls/digital solutions, consultative/outcomes selling experience, valid driver's license, US work authorization, travel up to 50%.
SCADA, BAS, EPMS
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2mo
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Senior Software Engineer, Recognition Intelligence Applications
Los Angeles or New York
$150k-$200k/yr OnsiteFull Time
Metropolis
Metropolis: Computer vision technology for checkout-free parking and retail payments.
6+ YOE6+ years software engineering; advanced Scala/Java; distributed systems; microservices; Agile; databases (MySQL/Postgres).
TypeScript, React, Scala, Java, MySQL, PostgreSQL, Snowflake, AWS, Datadog, Git, GitHub, Copilot, Claude Code
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Senior Software Engineer
El Segundo, California, United States
HybridFull Time
Greater Good Health
Greater Good Health: Provides nurse practitioner-led primary care and value-based health solutions.
7+ YOE7+ years building full-stack, cloud-native web applications; strong PHP/Laravel backend, integrations, APIs, databases, cloud (AWS), security, and mentoring experience.
Laravel, Livewire, Blade, AWS, Aurora PostgreSQL, S3, PostgreSQL, MySQL, MariaDB, HTML, CSS, JavaScript, REST, OAuth2
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1mo
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Senior Software Engineer
Columbus or Boston or Chicago or Austin or Los Angeles or United States or Canada or United Kingdom or Australia
$155k-$195k/yr HybridFull Time
Loop Returns
Loop Returns: Software platform automating e-commerce returns and post-purchase experiences.
5+ YOE5+ years building web applications, backend services, and APIs; strong PHP/Laravel preferred; AI-first tooling experience; ownership of production systems; mentoring and leading technical initiatives.
Claude Code, Cursor, PHP, Laravel, Vue.js, MySQL, DynamoDB, Kubernetes, AWS, Serverless
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Senior Software Engineer, Frontend
Calabasas, California, United States
$120k-$145k/yr OnsiteFull Time
AmaWaterways
AmaWaterways: Provides luxury river cruise vacations on international waterways.
5+ YOE5+ years building web applications with React and Next.js, strong TypeScript, frontend performance, accessibility, REST/GraphQL integration, Builder.io experience, and ability to mentor junior developers. Bachelor's degree or equivalent experience.
React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, CSS Modules, styled components, Emotion, Builder.io, REST, GraphQL, Jest, React Testing Library, Cypress, Playwright, Git, GitHub, Vercel, Netlify, AWS, Azure, Lighthouse, Chrome DevTools, Web Vitals, Microsoft Office
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