84 api engineer jobs at 46 companies in Seguin, TX

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
2mo
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Staff Engineer
San Antonio, Texas, United States
OnsiteFull Time
Frost Bank
Frost BankNYSE: CFR: Provides personal and commercial banking, investment, and insurance services.
6+ YOEMaster's in CS or Engineering; 6+ years software development; 5+ years in payments/financial platforms; Java; microservices; Docker/Kubernetes; Spring Boot; APIs; strong problem-solving and communication; leadership.
Java, Docker, Kubernetes, Spring Boot, APIs, OpenShift, Kafka, AWS, Azure, GCP
2w
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AI Engineer
San Antonio, Texas, United States
OnsiteFull Time
SWBC
SWBC: Provides insurance, mortgage, and investment services to individuals and businesses.
3+ YOEBachelor's in a related field, 3+ years developing/deploying AI or ML solutions, hands-on Python experience, LLMs/agentic AI, RAG/vector DBs, APIs, AWS experience, security and Responsible AI knowledge.
Python, LangChain, LangGraph, Strands, AWS Bedrock AgentCore, AWS Bedrock, AWS, Model Context Protocol (MCP), C#
1mo
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Senior Cyber Engineer - San Antonio, TX
San Antonio, Texas, United States
$123k-$244k/yr OnsiteFull Time
ICR
ICR: A cybersecurity research and engineering.
10+ YOE10+ years in low-level systems programming, reverse engineering, and leadership; BS in CS/CE/EE; proficient in C, Python, and assembly; OS APIs (Windows/Linux); RF and network protocol analysis; IDA Pro, Ghidra, GDB.
C, Python, Assembly, IDA Pro, Ghidra, GDB, Windows API, Linux API, Reverse engineering tools, RF analysis tools, Network protocol analysis
1mo
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Infrastructure Automation Engineer 1
Folsom or Denver or Englewood or Minneapolis or St. Paul or Pennington or Woodcliff Lake or Olympia or Folsom or Portland or Harrisburg or Dallas or San Antonio or Austin or Phoenix or Columbia or Minneapolis or Saint Louis Park or Oregon or Portland or Pennington or Woodcliff Lake or Orlando or Harrisburg or Albany or Boulder or Portland or Denver or Englewood or Portland or Denver or Pennington or Woodcliff Lake or Harrisburg or Portland or Orlando
OnsiteMultiple Commitments Available
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
1+ YOEBachelor’s degree or equivalent; 1+ year infra automation; scripting; APIs/REST; CI/CD; IaC; follow standards.
Python, PowerShell, JavaScript, REST, JSON, YAML, Terraform, Ansible, VMware Orchestrator, ServiceNow, CI/CD, Infrastructure as Code
1w
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Aprimo Engineer
San Antonio, Texas, United States
$90k-$110k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
3+ YOE3+ years experience with Aprimo development, REST API, Adobe DAM, Salesforce Marketing Cloud, Snowflake, data modeling, database design and stored procedures; experience building secure APIs and analytics support (Tableau/Power BI).
Aprimo, REST API, Adobe DAM, Salesforce Marketing Cloud, Snowflake, Tableau, Power BI
1mo
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Instrumentation and Electrical (I&E) Engineer (PE), Energy
Oklahoma City or Richardson or Houston or San Antonio or Austin or Dallas or Frisco or Fort Worth or Midland
OnsiteFull Time
Halff
Halff: Full-service infrastructure consulting firm providing engineering and design services.
8+ YOEPE license, 8+ years I&E experience (oil & gas/energy preferred), bachelor’s/master’s in engineering, proficiency with industrial control systems, AutoCAD and Microsoft Office, familiarity with NEC/NFPA/API/AGA, technical leadership and field support experience.
AutoCAD, Microsoft Office, PLC, SCADA
1mo
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Senior Instrumentation and Electrical (I&E) Engineer (PE), Energy
Oklahoma City or Richardson or Houston or San Antonio or Austin or Dallas or Frisco or Fort Worth or Midland
OnsiteFull Time
Halff
Halff: Infrastructure consulting firm providing engineering and architecture services.
12+ YOEPE license and 12+ years I&E engineering experience in Oil & Gas/Energy; bachelor's in electrical (master preferred); technical leadership, industrial control systems, NEC/NFPA/API/AGA familiarity, AutoCAD and Microsoft Office proficiency.
AutoCAD, Microsoft Office, PLCs, SCADA
3w
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Software Engineer 3
San Antonio, Texas, United States
HybridFull Time
HOLT Group
HOLT Group: The nation's largest authorized Caterpillar equipment and engine dealer.
5+ YOEBachelor's in IT/CS +5 years experience integrating Cloud/SaaS apps and APIs; MuleSoft certification required; experience with CloudHub, DataWeave, Anypoint MQ, JSON/XML/XSD, REST/SOAP, testing frameworks (Junit/Jmeter/Munit), API testing (SOAPUI/Postman), Git/Bitbucket/ADO, and API security; up to 20% domestic travel; Texas residency required.
MuleSoft's CloudHub, DataWeave, Anypoint MQ, Mule flows, CloudHub, APIs, SDK, JSON, XML, XSD, REST, SOAP, Junit, Jmeter, Munit, SOAPUI, postman, Bitbucket, GitHub, ADO, MuleSoft API Manager, Anypoint platform
4w
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Full Stack Web Developer
San Antonio, Texas, United States
$66k-$134k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
3+ YOEB.S. in CS or related field, 3+ years web development, React.js with TypeScript, backend APIs with Flask and NestJS, proficiency in Python/JavaScript/HTML5/CSS3, PostgreSQL, Redis, Git, willing to obtain DoD Secret clearance (U.S. citizenship required).
React.js, TypeScript, Flask, NestJS, Python, HTML5, CSS3, PostgreSQL, Redis, Git, n8n, Agentic Workflows, AWS, GitLab CI/CD, Docker, WebSockets, SQLAlchemy, Prisma, Tailwind CSS, Tanstack Tools, Rust
1mo
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Senior Software Developer w/ Reverse Engineer experience – San Antonio
San Antonio, Texas, United States
$150k-$180k/yr OnsiteFull Time
CNF Technologies
CNF Technologies: Cybersecurity firm providing R&D and engineering for defense clients.
5+ YOE5+ years in system/software engineering with reverse engineering; strong full stack, databases, REST APIs, virtualization, CI/CD, and malware analysis.
Python, JavaScript, Bash, Powershell, .NET, C, Golang, Rust, Assembly, VMware, Docker, Ansible, Terraform, Ghidra, IDA Pro, Wireshark
1mo
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Software Engineer I
San Antonio, Texas, United States
OnsiteFull Time
USAA
USAA: Provides insurance and banking to the military community.
4+ YOEBachelor's in CS/related and 4 years' experience; experience with Guidewire InsuranceSuite/AWS, Gosu, Java/J2EE, JavaScript, SOAP/REST APIs, Springboot, WebSphere/WebLogic/Tomcat, relational DBs, JMS/JDBC, batch processing, Agile, and policy & claims domain knowledge.
Guidewire InsuranceSuite platform, Guidewire AWS Cloud, Gosu, SOAP, REST, API Development, Agile, Java, J2EE, Javascript, WebSphere, WebLogic, Apache Tomcat, Springboot, Gosu Query language, Batch Process Design, JMS, JDBC
2mo
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Senior Software Engineer (Hybrid) - 27722
San Antonio or Maryland or Virginia or Colorado or Texas or Utah or Alaska or Hawaii
$52-$140/hr HybridFull Time
Wyetech
Wyetech: Provides professional engineering services for government and commercial sectors.
7+ YOEU.S. citizenship and position-appropriate security clearance required. Senior-level Java engineer with Kubernetes, Helm/Flux, microservices, API, and Linux experience; demonstrated tech lead/mentorship experience and 7+ years software engineering experience (varies by degree).
Java, Spring, Guava, Kubernetes, Helm, Flux, RESTful web services, Microservices, Linux, Git, Nexus, Maven, AWS, Azure, Golang, Python, GitLab CI, Elasticsearch, MongoDB, Solr, JIRA, Confluence, GitHub Enterprise
1w
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Enterprise Systems Engineer
San Antonio, Texas, United States
HybridFull Time
UT Health San Antonio
UT Health San Antonio: Provides medical education, biomedical research, and health care services.
3+ YOEDesign and implement ETL pipelines, integrate on-premise and cloud systems, use Microsoft Fabric and low-code tools, apply AI/automation, query with SQL/CLI/API, script with PowerShell/Python, validate data; Bachelor's or equivalent and 3+ years IT experience required.
Microsoft Fabric, ETL, SQL, CLI, API, PowerShell, Python, JSON, AI
1mo
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Senior Software Engineer, Salesforce
Austin or San Antonio or Sunnyvale
$178k-$230k/yr OnsiteFull Time
GFiber: Broadband technology delivering fiber internet services
8+ YOE8+ years Salesforce development; 6+ years Apex/REST API; 2+ years Vlocity/Omniscript; Salesforce configuration with Apex, Visualforce, LWC, CPQ; Bachelor's in CS or related field
GitHub, Harness.io, Apex, Visualforce, LWC, Vlocity, OmniScript, REST API, Java, Kotlin, GCP, Salesforce CPQ, Sales Cloud, Service Cloud
2mo
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Sr. Android Engineer (Tulsa, OK, US, 74101)
Tulsa or Dallas or Houston or Kansas City or Lincoln or Little Rock or Memphis or Oklahoma City or Phoenix or Salt Lake City or San Antonio or Springfield or St. Louis
OnsiteFull Time
BOK Financial
BOK FinancialNASDAQ: BOKF: Provides commercial, consumer banking, and wealth management services.
8+ YOE8+ years software engineering; 3-5 years building production Android apps with Kotlin and Jetpack Compose; strong API, CI/CD, testing experience.
Kotlin, Jetpack Compose, AWS, REST APIs, JUnit, Espresso, Mockito, Firebase, New Relic, CircleCI, Fastlane, GitHub Copilot, Claude
2w
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AI Developer
San Antonio, Texas, United States
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
2+ YOE2+ years building production-grade software in Python, TypeScript, or Java with APIs/data services; experience deploying LLMs, RAG, and agentic workflows; AWS data foundations; event-driven integrations; MLOps/DevSecOps practices; Secret clearance; Bachelor’s in CS, Software Engineering, or Data Science.
Python, TypeScript, Java, FastAPI, Flask, REST, GraphQL, SQL, AWS, LLMs, RAG, CI/CD, Kafka, NATS, RabbitMQ, LiDAR, photogrammetry, RMF, STIG
2mo
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Staff Systems Engineer- Microsoft365/MDM
San Antonio, Texas, United States
$124k/yr OnsiteFull Time
HEB: Leading omnichannel retailer focusing on digital customer experience.
7+ YOE7+ years of systems engineering experience; strong automation, scripting, security, and leadership of engineers; extensive IT infrastructure expertise.
Jira, Microsoft 365, PowerShell, Python, APIs, OS concepts, TCP/IP, Operating Systems, Security
1mo
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Infrastructure Automation Engineer 2
Omaha or Saint Louis Park or Denver or Englewood or Orlando or Kansas City or Albuquerque or Portland or Salem or Pittsburgh or Austin or Dallas or Fort Worth or San Antonio or Vienna or Olympia or Columbia or St. Paul or Harrisburg or Pennington or Woodcliff Lake or Phoenix or Folsom
OnsiteFull Time
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
3+ YOEBachelor's or equivalent; minimum 3 years in infrastructure automation/platform engineering; scripting with Python, PowerShell, or JavaScript; experience with REST APIs, CI/CD/Git, Terraform or Ansible; knowledge of cloud (Azure/AWS) and security fundamentals.
VCF Automation, Aria Automation, Orchestrator, ServiceNow, GitOps, REST APIs, Python, PowerShell, JavaScript, CI/CD, Git, Terraform, Ansible, SDDC Manager, Aria Operations, Aria Operations for Logs, NSX, vSAN, Azure, AWS, CMDB
2w
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Software Engineer (Hybrid) - TS Required
San Antonio, Texas, United States
$100k-$160k/yr HybridFull Time
Phoenix Operations Group
Phoenix Operations Group: Software and analytics for defense and intelligence missions.
4+ YOETop Secret clearance required. 4+ years software engineering experience with Java, Kubernetes, Docker, GitLab CI/CD, Apache NiFi, and cloud (AWS). Experience with microservices, RESTful APIs, and CI/CD pipelines; tech lead experience preferred.
Kotlin, Gradle, YAML, Java, GitLab CI/CD, Docker, Amazon Web Services (AWS), Amazon Elastic Container Registry (ECR), Amazon S3, Maven, Apache NiFi, Kubernetes, K9s, helm, flux, Spring, Guava, Linux, Git, Nexus, golang, Python, Elasticsearch, MongoDB, Solr, JIRA, Confluence, Github Enterprise
3mo
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Developer (.NET Full Stack)
San Antonio, Texas, United States
OnsiteFull Time
Global Evangelism
Global Evangelism: Provides Christian religious services, media broadcasting, and educational programs.
3+ YOE3–5 years software development in Microsoft stack; strong C#/.NET; HTML/CSS; APIs and databases; Azure preferred.
C#, Microsoft .NET, HTML, CSS, SQL Server, Blazor, Razor Pages, ASP.NET MVC, Azure