173 sr api developer jobs at 112 companies in Evans, CO
2w
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API Developer
Pittsburgh or Cleveland or Dallas or Birmingham or Phoenix or Denver
OnsiteFull Time
8+ YOE8+ years Java/J2EE experience building RESTful APIs using Spring Boot and microservices; experience with DevOps, Kafka, IBM MQ, SQL/NoSQL and cloud platforms required.
Java, J2EE, Spring Boot, Microservices, REST API, Angular, XML, JSON, Swagger, Jenkins, uDeploy, GIT, Kafka, IBM MQ, SQL, No Sql, AWS, Azure, GitHub, CI/CD, React, JavaScript, HTML, CSS, JSON Web Token (JWT), UML, XPath
2mo
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Sr. Software Engineer
Lakewood, Colorado, United States
$140k/yr OnsiteFull Time
5+ YOE5+ years of software engineering with Java/Spring Boot, ownership of end-to-end projects, mentorship, on-site role in Lakewood, CO.
Java, Spring Boot, APIs, Distributed Systems
2mo
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Sr. Software Engineer - Ignition
Denver, Colorado, United States
HybridFull Time
3+ YOEMinimum 3 years software development experience; familiarity with microservices, RESTful APIs, auth, Python/.NET/C#/Angular, SQL, Microsoft Azure, LLM/AI integration; bachelor's preferred, master's desired.
Angular, TypeScript, Python, .NET, C#, T-SQL, SQL, Microsoft Azure, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure SQL Database, Microsoft Azure DevOps, Microsoft Azure OpenAI, PyTorch, TensorFlow, scikit-learn
3d
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Salesforce Agentforce and Analytics Engineer, Sr.
Denver, Colorado, United States
$99k-$148k/yr HybridFull Time
3+ YOEBachelor's degree and 3 years of Salesforce experience with Flow, Apex, APIs, and integrations; 1 year designing Agentforce agents; Python proficiency and experience with AI workflows and enterprise systems.
Salesforce, Agentforce, Flow, Apex, API, Health Cloud, Marketing Cloud, Data Cloud, Experience Cloud, Marketing Intelligence, Python, LinkedIn Learning
2w
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Senior Full-Stack Lead Developer
Broomfield, Colorado, United States
$89k-$125k/yr HybridFull Time
5+ YOE5+ years C# application development, Web API and Agile experience; SQL Server, HTML/CSS/JavaScript; experience leading developers, BS/MS in CS or related field; strong communication and leadership.
C#, .NET, Web API, Angular, WPF, Microsoft SQL Server, HTML, CSS, JavaScript, Git
1mo
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Staff SW Engineer
Denver, Colorado, United States
$124k-$199k/yr HybridFull Time
5+ YOE5+ years relevant experience (or equivalent advanced degree/experience), strong backend development (e.g., Java), API and database expertise, systems integration and data structure knowledge, familiarity with Kubernetes/Docker, strong collaboration and communication.
Java, APIs, Kubernetes, Docker
3w
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Senior Application Developer
Denver or Springfield or Sterling or St. Louis
$75k-$158k/yr OnsiteFull Time
8+ YOEBachelor's in CS or related,8+ years software development experience,expert Java and/or Python,REST APIs,databases,CI/CD,GIT,TS/SCI clearance and polygraph willingness.
Java, Python, ArcGIS, GeoServer, OpenLayers, Cesium, Kubernetes, AWS/C2S, Git, CI/CD
1mo
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Sr. Application Security Engineer
Denver, Colorado, United States
$130k-$165k/yr HybridFull Time
7+ YOE7+ years in application/product/cloud security; Bachelor's in relevant field or equivalent experience; hands-on experience with threat modeling, secure SDLC, vulnerability management, CI/CD security, cloud (AWS/Azure), API and AI security; strong communication skills.
SAST, DAST, SCA, IaC scanning, container scanning, API security testing, secrets scanning, AI runtime scanning, WAF, CNAPP, CSPM, CI/CD, SIEM, AWS, Azure, OWASP ASVS, NIST CSF, NIST SSDF, OWASP SAMM
1mo
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Lead System Engineer
Orlando or Tampa or Lakeland or Melbourne or Daytona Beach or Las Vegas or Denver or Houston
$70-$75/hr RemoteFull Time, Contract
7+ YOE2+ Mgmt7+ years full‑stack development, 2+ years lead experience; hands‑on with Oracle/PL‑SQL, APIs/integrations, Microsoft Azure (.NET), Angular, Python; DevOps/CI/CD; experience with AI tools; strong client communication; must have work authorization not requiring sponsorship.
Oracle, PL/SQL, APIs, Microsoft Azure, .NET, Angular, Python, GitHub Copilot, Azure OpenAI, TestGPT, Docker, Kubernetes, CI/CD
2mo
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Senior Software Engineer
Denver or Salem
$130k-$150k/yr OnsiteFull Time
5+ YOE5+ years in software development; Bachelor’s or Master’s in CS/Engineering; strong API, security, and data tooling experience.
Git, OpenAPI, OAuth, RabbitMQ, Apache Kafka, Azure Service Bus, Event Hubs, Azure Databricks, TypeScript, C#, F#, PostgreSQL
1mo
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Sr Automation Engineer – New Glenn
Seattle or Denver or Los Angeles or Florida
$182k-$277k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
8+ YOEBachelor's in engineering/computer science or equivalent, 8+ years software/automation/data/engineering experience, experience designing automation tools, familiarity with React, TypeScript, Kubernetes, Databricks, SQL, Python, REST APIs, and AWS.
React, TypeScript, Kubernetes, Databricks, SQL, Python, REST APIs, AWS, Git, SVN, Gitlab CI
1mo
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Senior Software Engineer
Denver, Colorado, United States
$160k-$185k/yr HybridFull Time
5+ YOE5+ years backend software development with .NET/.NET Core and Web/REST APIs; frontend experience with React/Vue/Angular/Svelte and Typescript; SQL experience; unit testing; AI/LLM development experience; strong communication and problem-solving.
Cognition AI, Devin, Cline, Replit, Cursor, Azure OpenAI, Anthropic, GitHub, Azure DevOps, Bit, Microsoft Visual Studio Code, Microsoft Visual Studio, SQL Azure, SQL Server, Unknit, MSTest, PostgreSQL, Docker, Azure, AWS, GCP, GitHub Copilot, Windsurf, Codex
1w
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Senior Software Engineer
Denver, Colorado, United States
$185k-$225k/yr OnsiteFull Time
Experience with full-stack development, microservices, cloud, containers, Kubernetes, REST APIs, modern web frameworks, CI/CD tools, and TS/SCI clearance with CI polygraph.
REST, AWS, GCP, Azure, Kubernetes, Docker, Node.js, NPM, Linux, Subversion, Git, JIRA, Confluence, HTML5, CSS, SASS, Less, Stylus, Browserify, WebPack, Closure, Angular, Ember, React, Redux, Reactive, VueJS, SVG, HTML5 Canvas, WebGL, WebSockets, Svelte, Cesium, OpenLayers, Spring
2mo
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Staff Software Engineer, AI Developer Tools
Denver or San Francisco or New York City or Seattle or United States
$179k-$245k/yr HybridFull Time
8+ YOE8+ years systems engineering experience, production AI experience (prompting, fine-tuning, RAG, multi-agent), strong distributed-systems and developer-experience mindset, excellent communication and mentoring skills.
Large language models (LLMs), Retrieval-augmented generation (RAG), multi-agent systems, CI/CD, APIs, evals
1mo
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Staff Software Engineer
Broomfield, Colorado, United States
$145k-$185k/yr HybridFull Time
10+ YOE10+ years full‑stack software engineering experience; deep Ruby on Rails and Vue.js expertise; API and MySQL proficiency; proven technical leadership and mentoring; experience with AI-assisted development tools.
Ruby on Rails, ActiveRecord, Vue.js, MySQL, GitHub Copilot, Cursor, Claude Code, Go (Golang), Node.js, Anthropic, OpenAI, AWS, OpenSearch, Redis, Kafka, Docker, CI/CD
3w
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Software Engineer III
Denver, Colorado, United States
$142k-$165k/yr OnsiteFull Time
5+ YOE5–8 years software engineering experience, fullstack development, proficiency with React, Node.js, TypeScript, RESTful APIs and PostgreSQL; experience with cloud containers, CI/CD, and system design; Bachelor's/Master's or equivalent.
React, CSS, Node.js, TypeScript, RESTful APIs, PostgreSQL, Google Workspace (GMail, Drive, Docs, Sheets, Slides), Slack, Confluence, Jira, Zoom Video, Next.js, Ant, Docker, AWS EKS, CI/CD, Python
1mo
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Senior Software Engineer
Arlington or Woburn or Carlsbad or Aurora or Boston or Dayton or Melbourne
$140k-$170k/yr HybridFull Time
5+ YOEProven Java and Spring development experience, microservices and API design, containerized infrastructure (Docker/Kubernetes), experience with Kafka/NATS and GitLab, Python for AI/data integration, and ability to obtain Top Secret clearance.
Java, Spring Boot, Linux, Docker, Kubernetes, Kafka, NATS, GitLab, Python
3d
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Knowledge Engineer Manager - Back-end Engineer
Seattle or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or New York City or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$80k-$294k/yr HybridFull Time
5+ YOEMinimum 5 years in knowledge graph hydration, ontology mapping, graph and relational databases, vector databases, Python or Java, and REST API development; bachelor's degree or equivalent experience required.
RDF, OWL, SKOS, RDFS, SPARQL, R2RML, CSVW, SHACL, GraphDB, Stardog, Neo4j, Amazon Neptune, PostgreSQL, MySQL, SQL Server, Pinecone, Weaviate, Milvus, Qdrant, Elasticsearch, OpenSearch, Python, Java, SQL, JSON, XML, CSV, REST APIs, Apache NiFi, Airflow, Docker, Kubernetes, Helm, AWS Neptune, Azure Cosmos DB, GCP, Kafka, RabbitMQ, Git, GraphQL APIs, D3.js, Cytoscape.js, Terraform
1w
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Senior Software Engineer, Radar
Broomfield or Fort Collins
$190k-$252k/yr OnsiteFull Time
5+ YOE5+ years software development experience; proficiency in C++; experience with Nix/NixOS, API design, reproducible builds, and software quality/security practices; Bachelor's in CS/CE or related.
C++, Python, Nix, NixOS, Lattice OS, gRPC, Protobuf, ZeroMQ, DDS, Docker, Linux
3w
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Software Engineer - iOS/Android
Pittsburgh or Strongsville or Denver or Birmingham or Dallas
$60k-$150k/yr OnsiteFull Time
5+ YOEBachelor's degree or equivalent,5+ years software development,3+ years Java enterprise experience,experience with mobile (iOS/Android),Spring Boot,REST APIs,SQL,Git and Agile.
Java 11+, Java 17+, Spring Boot, REST APIs, Microservices, Oracle, PostgreSQL, SQL Server, MongoDB, Azure, AWS, Docker, Kubernetes, Git, Jenkins, SonarQube, Jira, Postman, Angular, React, Vue, JavaScript, TypeScript, HTML5, CSS3, Swift, Objective-C, Kotlin, Android SDK, iOS SDK, React Native, Flutter, .NET MAUI, Maven, Gradle, Kafka, GitHub Actions, Azure DevOps, GitLab