57 sr api developer jobs at 32 companies in Plainfield, IN
1mo
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Sr. Software Engineer (C# .NET)
Carmel or United States or Canada
$112k-$155k/yr RemoteFull Time
5+ YOE5+ years building scalable, cloud-native APIs with .NET; university degree or equivalent experience; experience with telemetry/APM, performance tuning, application development and testing; strong mentoring and cross-functional collaboration skills.
C#, .NET, .NET Core, PostgreSQL, Kubernetes, Amazon Web Services (AWS), OpenTelemetry, Java, Kotlin, JavaScript, Microsoft Azure
1w
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Sr. Data Engineer
Indianapolis, Indiana, United States
$89k-$139k/yr OnsiteFull Time
5+ YOE5+ years data engineering experience; strong SQL, Python, PySpark/Spark; cloud data pipelines; API and POS integrations; data modeling, quality, monitoring, and governance experience.
SQL, Python, PySpark, Spark, APIs, SAP, Salesforce, Snowflake, Databricks, Stackline, Datavations, SimilarWeb, Airflow, Azure Data Factory, Azure, AWS, GCP
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Sr. Software Engineer I
Atlanta or Boston or Chicago or Indianapolis or United States or Canada or North America
RemoteFull Time
4+ YOE4+ years professional software development experience; React and modern JavaScript framework proficiency; experience with LLMs/generative AI and cloud-native architectures; REST/RPC/GraphQL APIs, testing, CI, and strong communication skills.
React, LLMs, GraphQL, REST, RPC
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Sr. Data Engineer
Indianapolis, Indiana, United States
$89k-$139k/yr OnsiteFull Time
5+ YOE5+ years data engineering experience; strong SQL and Python skills; experience with Spark/PySpark, cloud data platforms, data modeling, APIs, data quality, and data governance.
SQL, Python, PySpark, Spark, Databricks, Stackline, Datavations, SimilarWeb, Airflow, Azure Data Factory, SAP, Salesforce, Snowflake, Azure, AWS, GCP
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Sr Project Engineer
Indianapolis, Indiana, United States
$94k-$174k/yr OnsiteFull Time
5+ YOEBachelor's in engineering and 5+ years pharma experience (or 8+ with no degree); expertise in API manufacturing, hot cells/isolator systems, FDA/GMP, equipment qualification, validation, change management, and technical writing.
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Sr. Engineer - Oil & Gas
Lisle or St. Louis or Charlotte or Indianapolis or Greenwood Village
HybridFull Time
5+ YOEBS in engineering (ABET), 5-15 years oil/gas engineering experience, 3+ years project management, knowledge of DOT/API/ANSI/ASME standards, Microsoft Word/Excel/PowerPoint/Project proficiency, valid driver’s license, willing to travel.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project
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Principal Software Engineer, Salesforce & Data
San Francisco or New York City or Seattle or Indianapolis
$197k-$314k/yr OnsiteFull Time
12+ YOE12+ years engineering experience; deep expertise in Salesforce technologies (Apex, Lightning), data platforms, Python, SQL, Airflow, Snowflake; experience with integrations, APIs, streaming, AI developer tools, and technical leadership.
Salesforce Core, Apex, Lightning Platform, MuleSoft, Heroku, APIs, Snowflake, Airflow, Python, SQL, Claude Code, Cursor, Windsurf, GitHub Copilot, Databricks, Kafka, CI/CD, Customer 360, Data360
2d
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Senior Developer
United States or Indianapolis or Noida
$100k-$115k/yr RemoteFull Time
8+ YOERequires a bachelor's or master's degree, 8+ years in software development, maintenance, support, and documentation, 6+ years with SQL databases, and experience in insurance systems, COBOL, C#, .NET, Git, and architecture.
COBOL, DB2, SQL, C#, .NET Framework, Git, GitHub, API, GitHub Copilot, Claude Code, MCP
3d
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Information Security Sr Advisor - Automation Engineer
Atlanta or Mason or Indianapolis or Grand Prairie or Louisville
HybridFull Time
8+ YOEBS/BA and minimum 8 years in systems administration/information security; experience with cloud-native automation, access management, cryptography, APIs, containers, CI/CD, and secure development; CISSP preferred.
Python, Java, Go, REST APIs, AWS, EKS, IAM, Docker, Kubernetes, GitHub Actions, Jenkins, GitLab CI, Terraform, ServiceNow, Kafka, SNS, SQS
3d
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Senior Software Engineer
Indianapolis, Indiana, United States
OnsiteFull Time
Build backend services, APIs, data architectures, AI systems, testing frameworks, and documentation while translating business workflows into secure, maintainable technical implementations.
API
2d
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Senior Application Developer (482054)
Indianapolis, Indiana, United States
$70k/yr OnsiteFull Time
7+ YOEAdvanced full-stack development with C#, .NET, Angular, JavaScript frameworks, SQL, APIs, GitHub Copilot, DevSecOps, CI/CD, automated testing, legacy modernization, and technical leadership; 7+ years may substitute for a degree.
GitHub Enterprise Cloud, GitHub Copilot, .NET, Angular, SQL, C#, JavaScript, GitHub Actions, Azure DevOps Pipelines
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Principal Process Engineer - API External Manufacturing (Large Molecule)
Indianapolis, Indiana, United States
$66k-$172k/yr HybridFull Time
5+ YOEBachelor's in chemical engineering (or engineering) with 5+ years manufacturing experience; 3+ years process/manufacturing engineering in large molecules preferred; process hazard analysis, root cause analysis, and technical leadership skills required.
Batch Plus, JMP, Visio, Aspen, Dynochem, OSI PI, Microsoft Office Suite
2w
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Software Engineer, Senior
Carmel, Indiana, United States
OnsiteFull Time
5+ YOEBachelor's or equivalent experience,5+ years software engineering,cloud-native development,secure SDLC,CI/CD,distributed systems,C#/.NET/Python,REST APIs,relational and NoSQL databases.
C#, .NET, Python, React, TypeScript, Terraform, Kubernetes, Docker, AWS, Microsoft SQL, PostgreSQL, Amazon DynamoDB, MongoDB, iOS, Swift, RESTful APIs
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
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Senior Salesforce Developer
Indianapolis, Indiana, United States
$105k-$123k/yr HybridFull Time
Proficient in Apex, LWC, JavaScript; experience with SDLC, Salesforce configuration, data modeling/migrations, API integrations, version control, and Service Cloud; strong communication and problem-solving skills.
Apex, Lightning Web Components (LWC), Visualforce, JavaScript, REST APIs, SOAP APIs, Flows, Bitbucket, GitHub, Formstack, Intellistack, Service Cloud, CI/CD
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Software Developer Senior
Carmel, Indiana, United States
OnsiteFull Time
5+ YOE5+ years building complex software with C#, .NET Core, MS SQL; experience with integrations, APIs, TypeScript/JavaScript, CI/CD, Agile; SAFe for Teams (SP) required within 90 days.
.NET Core, Angular, Microsoft Azure, C#, MS SQL, T-SQL, TypeScript, JavaScript, TFS, GIT, SVN
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Senior Software Engineer - Full Stack
Atlanta, Indiana, United States
HybridFull Time
5+ YOE5+ years professional software engineering experience; strong full-stack skills (frontend, APIs, backend, databases); experience with TypeScript/Node.js/SQL and modern frontend frameworks; debugging, testing, CI/CD, and AI-assisted development fluency.
TypeScript, Node.js, SQL, Angular, React, SQL Server, Docker, Kubernetes, CI/CD, GitHub, Jira, AI-assisted development tools
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AI Engineer
Indianapolis, Indiana, United States
$100k-$110k/yr OnsiteFull Time
6+ YOEBachelor in Computer Science, 6+ years experience; strong Python backend skills (FastAPI/Flask), LLM orchestration, Kubernetes, cloud and enterprise API integration experience.
Python, FastAPI, Flask, Pydantic, Kubernetes, LLM, Salesforce, ServiceNow, SFMC, CRM, MCP servers, React, AWS S3, Secrets Manager, ECR, ECS, ALB, OAuth, REST, SOAP
3w
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Application Engineer - Automation
Hanover Park or Indianapolis
$75k/yr FieldFull Time
5+ YOEBachelor's degree required, 5+ years in distribution/material handling, knowledge of AGV/VLM/ASRS, API and PLC controls, Microsoft Office, strong communication and project skills.
API, PLC, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint, Microsoft Word
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Principal Applied AI Engineer, Finance
Menlo Park or Boston or Indianapolis or Durham or Washington or Missouri or Rhode Island or Maine or New York or Florida or North Carolina or Massachusetts or Illinois or Tennessee or Pennsylvania or Mississippi or New Jersey or Maryland or Michigan or Vermont or Minnesota or West Virginia or Louisiana or California or Ohio or Connecticut or South Carolina or Georgia or Delaware or Wisconsin or Virginia or Kentucky or Indiana
$194k-$341k/yr RemoteFull Time
8+ YOE8+ years building production AI/ML systems with Python, LLMs, MLOps and cloud (preferably AWS); expertise in time-series forecasting, predictive modeling, and agentic/Generative AI; strong software engineering and CI/CD experience.
Python, LLMs, Docker, Kubernetes, AWS, CI/CD, APIs, MLOps, RAG, vector databases