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# Applications Engineer

- **Company:** ATC
- **Location:** Fort Worth, TX, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Artificial Intelligence, Amazon Web Services, Automation of Tests, Big Data, Cloud Computing, Code Review, Encodings, Data Files, Software Debugging, Elasticsearch, Mobile Application Software, Java Virtual Machine (JVM), Machine Learning, Natural Language Processing, Query Optimization, Software Tools, Search Technologies, Software Engineering, Apache Solr, Data Streaming, Web Applications, Database Optimization, Indexer, Backend, Kotlin, Apache Kafka, Search Engines
- **Published:** September 27, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-applications-engineer-fort-worth-tx--c314f0fd-a3a9-4556-8e6c-939c72ebb743

## About the Role

Preferred Qualifications

Proficiency in Java or another JVM language (e.g., Scala, Kotlin)

Experience with search engines such as OpenSearch, Elasticsearch, or Solr

Strong understanding of indexing, query optimization, and distributed search performance

Hands-on experience designing and scaling back-end services in a cloud environment (AWS preferred)

Kafka or other event streaming experience

Familiarity with semantic search, embedding, or NLP techniques

Exposure to AI/ML concepts, particularly around ranking or search relevance

Strong collaboration and communication skills in a remote-first, video-driven culture, Amazon Web Services (AWS), Application Builders, Artificial Intelligence (AI), Backend as a Service (BaaS), Cloud Computing, Code Reviews, Communication Skills, Cross-Functional, Data Sets, Debugging Skills, Elasticsearch, Engineering Software, Health Plan, Internet Application, Java, Mentoring, Mobile Applications, Natural Language Processing (NLP), Process Improvement, Project Estimates, Quality Assurance Methodology, Query Optimization, SOLR, Search Engines, Search Ranking, Semantic Search, Software Engineering, Strategic Planning, Systems Scalability, Team Player, Technical Leadership, Test Automation, Testing, Work From Home

## Description

We are seeking a highly skilled and experienced Senior Applicaton Engineer to join our product team. As a Senior Engineer Application, you will play a crucial role in ensuring the quality and reliability of our no-code mobile app and web application builder platform. Your primary responsibility will be to perform thorough manual testing of our applications and identify any defects or issues that may impact the user experience. Additionally, your expertise in automation testing will be an added advantage in optimizing our testing processes.

Roles and Responsibilities

Design, build, and scale back-end services in Java, integrated with OpenSearch

Develop indexing strategies, schema mappings, and optimized query patterns for large datasets

Support Workiva's GenAI and RAG endpoints, enabling semantic and natural language search features

Leverage AWS cloud infrastructure and Kafka event streaming for scalable systems

Monitor, tune, and debug search infrastructure for performance, reliability, and accuracy

Partner with cross-functional teams to deliver search-driven features that meet customer needs

Provide mentorship through code reviews, technical guidance, and collaboration

Lead well-scoped projects, define milestones, and improve team processes


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