APIs

APIs Developer Jobs

1,254 jobs found

Today

Software Developer

NextProcess Addison, TX

Addison, TX

Today

$110k - $130k/yr Full time Backend Developer .NET APIs

Apply Now

Job Description

NextProcess is hiring a Software Developer in Addison, TX to build and support enterprise applications across modern .NET/Blazor and legacy ASP.NET Web Forms.

Responsibilities

Develop and maintain full-stack enterprise business applications across .NET, Blazor, and ASP.NET Web Forms.
Design, develop, document, and support REST APIs and SOAP or other web-service integrations.
Build business logic, data-access layers, shared domain libraries, background executables, and client-specific integrations.
Work with SQL Server including relational data models, stored procedures, direct SQL queries, transactions, and data-migration utilities.
Write clean, maintainable, testable C# code using object-oriented design, LINQ, asynchronous programming, and established application patterns.
Create and unit test applications aligned to coding, security, performance, and deployment standards.
Analyze and resolve production issues across web applications, APIs, business logic, database queries, integrations, IIS hosting, and third-party components.
Participate in requirements analysis, technical design, user-story development, task estimation, code reviews, and sprint planning.
Collaborate with business stakeholders, QA, developers, and support personnel in an Agile environment.
Maintain and enhance applications hosted in IIS using Visual Studio and Azure DevOps source control.
Document application behavior, technical decisions, integration requirements, deployment procedures, and troubleshooting steps.
Improve existing legacy applications and support modernization efforts involving .NET 10.

Requirements

3+ years of enterprise C# .NET development experience.
Understanding of object-oriented design.
Relational database understanding, primarily Microsoft SQL Server (MSSQL).
Experience with modern .NET, including .NET 8, .NET 9, or .NET 10.
Experience maintaining ASP.NET Web Forms targeting .NET Framework 4.8.
Experience building and consuming REST APIs and SOAP web services.
Experience with LINQ, asynchronous programming, JSON, XML, and serialization.
Experience with HTML, CSS, and JavaScript for browser-based application development.
Ability to write unit tests and support integration, regression, and user-acceptance testing.
Experience debugging in Visual Studio and troubleshooting IIS-hosted applications.
Meticulous attention to detail, strong communication, and reporting skills.
Self-starter who can work independently with minimal supervision.

Technologies

.NET, Blazor, ASP.NET Web Forms, REST APIs, SOAP
SQL Server, C#, LINQ, asynchronous programming
IIS, Visual Studio, Azure DevOps, .NET 10
.NET 8, .NET 9, .NET Framework 4.8
JSON, XML, serialization
HTML, CSS, JavaScript
Git-based source control, Dapper, Telerik
GitHub Copilot, Claude Code, Codex

Beneficial Experience

Knowledge of the accounting industry.
Experience with Dapper.
Knowledge of EDI.
Experience with Telerik.
BI or report experience.
Experience with Git-based source control.
Experience using an AI coding assistant (GitHub Copilot, Claude Code, Codex, etc.).
Experience working in a team-oriented, collaborative environment.

Qualifications

Bachelor’s Degree in Business, Computer Science, or a related field, or equivalent experience.
Comprehensive knowledge of application development with Visual Studio.
Excellent verbal and written communication skills.
Strong analytical and problem-solving skills.
Ability to work effectively, organized, and focused.
Pro-active, self-motivated team player with action-and-results orientation.

Benefits

100% company paid employee medical insurance
Vacations
Sick leave
Discretionary annual bonus
Dental insurance
Health insurance
Vision insurance

Work Location

In person
Addison, TX 75001 (onsite)

Compensation

Pay: $110,000.00 - $130,000.00 per year

Apply

Email: careers@nextprocess.com

View full job page →

Today

Scientific Software Developer - Molecular Design

BIOVIA San Diego, CA

San Diego, CA

Today

$140k - $175k/yr Full time Backend Developer Agile Agile Methodologies

Apply Now

Job Description

BIOVIA is building an AI-powered virtual companion, MARIE, within its Molecular Design products. This hybrid role in San Diego, CA combines scientific software development with Agile delivery practices, helping integrate simulations and advance validated scientific workflows.

You will contribute to a team focused on high-quality, on-time software releases, while collaborating across development, QA, product marketing, technical communications, and technical services. With a strong benefits package, tuition reimbursement, and immediate 401K enrollment, this position supports both your work and your long-term growth.

Responsibilities

Integrate simulations into Molecular Design.
Develop new approaches to scientific software within a dynamic development team delivering high-quality, on-time releases using best-of-breed Agile practices.
Support development of the MARIE AI-powered companion for scientists using BIOVIA products focused on Molecular Design.
Reason through, orchestrate, and execute multi-step workflows using validated scientific methods so MARIE produces deterministic, actionable outcomes.
Apply knowledge of software architecture, design, optimization, and maintenance.
Build collaborative working relationships with application development, quality assurance, product marketing, technical communications, and technical services teams.

Requirements

Master’s or PhD in Computational Chemistry, Computer Science, or a related discipline; several years of programming experience in a commercial environment preferred. An equivalent combination of education and experience may also be considered.
3+ years of combined academic and professional experience in scientific visualization and computer science.
Major plus: familiarity with pharmaceutical and biotech industry use cases, processes, and methods, including those used by cheminformaticists and computational chemists.
Broad technical knowledge of object-oriented design and implementation, design patterns, and software development methodologies.
Excellent written and verbal communication skills.
Strong analytical and organizational skills.
Strong personal drive to learn leading-edge technologies and excel.
Experience with Agile development methodologies such as Scrum.
Working knowledge of TypeScript and Python is a plus.

Technologies: TypeScript, Python, Agile, Scrum

Compensation & Benefits

Salary range: USD $140,000 - $175,000 per year.

Total expected compensation: $140,000 to $175,000, including base salary (or annualized hourly estimate) and target bonus.

Choice of plans providing comprehensive coverage for medical, dental, and vision for employee and dependents
Employee life
Short- and long-term disability
Tuition reimbursement
Immediate 401K enrollment
401K match: 50 cents on the dollar, up to the first 8% of eligible compensation you contribute (based on match eligibility criteria)
Flexible time off policy
10 paid holidays
Excellent salary with potential for bonus

View full job page →

Today

AI Software Test Engineer

Aquent Talent Ann Arbor, MI

Ann Arbor, MI

Today

$42 - $46/hr Full time Backend Developer Ai Engineer Ai Testing And Evaluation

Apply Now

Job Description

AI Software Test Engineer role in Ann Arbor, MI (onsite), focused on validating AI-powered applications for reliability, accuracy, safety, and performance.

Responsibilities

Design and implement testing strategies across a portfolio of AI applications, platforms, and services.
Assess AI model outputs for accuracy, consistency, reliability, and safety to support high-quality user experiences.
Plan and execute functional, integration, end-to-end, regression, and performance testing for AI solutions.
Create test cases tailored to prompt-driven, agentic, and retrieval-based AI workflows.
Validate AI guardrails, business rules, permissions, and governance controls for responsible AI deployment.
Run adversarial, negative, and edge-case tests to surface potential model failures and hallucinations.
Build and maintain automated test frameworks for AI applications to streamline testing.
Develop automated evaluation pipelines to continuously assess AI responses and workflows.
Integrate AI testing into CI/CD pipelines to enable continuous quality and fast iteration.
Implement automated quality scoring and regression detection to maintain release standards.
Create reusable test data, mocks, simulators, and validation frameworks to improve efficiency and coverage.
Test AI agents, workflows, APIs, and tool-calling capabilities to verify correct operation.
Validate integrations with external systems, diverse data sources, and enterprise services.
Verify performance, reliability, scalability, and resiliency of AI workloads through rigorous testing.
Execute load and stress testing to confirm AI services handle anticipated demand.
Collaborate with software engineers, AI engineers, product owners, architects, and security teams across the development lifecycle.
Participate in design reviews and provide quality feedback early in development.
Help define test strategy, quality standards, and best practices for the organization.
Support production readiness reviews and lead defect triage to help ensure timely issue resolution.

Requirements

Bachelor’s degree in Computer Science, Software Engineering, Information Systems, or a related technical field.
3 to 6 years of progressive experience in software testing, QA automation, or quality engineering.
Experience building automated test solutions using one or more: Python, Java, JavaScript/TypeScript, C#.
Demonstrated experience with API testing and automation tools (for example, Postman).
Strong foundation in test automation principles and best practices.
Working knowledge of SDLC and Agile methodologies.
Experience integrating testing into CI/CD pipelines (for example, GitHub Actions, Jenkins).
Experience testing distributed systems, web applications, and APIs.
Familiarity with containerization and orchestration, including Docker and Kubernetes.
Experience testing on cloud platforms: Azure, AWS, or GCP.
Proficiency in quality engineering concepts such as Defect Analysis and Root Cause Investigation.

Technologies

Python
Java
JavaScript/TypeScript
C#
Postman
GitHub Actions
Jenkins
Docker
Kubernetes
Azure
AWS
GCP
Selenium
Playwright
JUnit
PyTest

Benefits

Choice of three major medical plans (including vision coverage) plus dental insurance
Paid sick leave for all hourly talent in the U.S. and Canada
401(k) with a match and immediate vesting
Exclusive employee discounts through Promo Code: Aquent
Free online training through Aquent Gymnasium

Preferred Qualifications (Nice-to-Have)

Experience testing generative AI applications, LLM-based systems, AI agents, or RAG applications.
Familiarity with AI models and platforms such as OpenAI, Claude, Gemini, or Azure OpenAI.
Experience building evaluation and benchmarking frameworks for AI solutions.
Knowledge of responsible AI principles, AI governance frameworks, and AI risk management practices.
Experience with AI-specific testing techniques including Prompt Testing, Response Evaluation, Hallucination Detection, Agent Workflow Validation, RAG Validation, AI Safety Testing, AI Regression Testing, and AI Benchmarking.
Familiarity with automation frameworks like Selenium, Playwright, JUnit, or PyTest.
Exposure to quality engineering domains such as Performance Testing, Load Testing, and Security Testing.

Location: Ann Arbor, MI (onsite)

Compensation: USD 42 - 46 per hourly

View full job page →

Today

Lead Product Software Engineer

Disney Entertainment and ESPN Product & Technology Glendale, CA

Glendale, CA

Today

$156k - $209k/yr Full time API APIs Cloud Operations

Apply Now

Job Description

Lead full-stack product engineering to standardize guest-facing web delivery across Disney Entertainment and ESPN brands, from front-end rendering to APIs and cloud performance.

Responsibilities

Build, modernize, and own guest-facing web applications end to end, covering rendered front ends, backend services and APIs, identity integrations, and caching behavior for fast, reliable scale.
Define and execute a long-term technical strategy across brand sites, with emphasis on reliability, observability, and delivery aligned to business priorities.
Research and evangelize paved-path architecture patterns and engineering standards that apply across brands rather than per site.
Lead legacy stack migrations to current platforms by scoping work, sequencing against live traffic, and completing changes without guest-facing regression.
Lower engineering friction across the portfolio through tooling, debugging interfaces, deployment models, and automation that enable faster shipping with less risk.
Set standards for AI-assisted development, including review gates, validation, and observability to trust automation on critical paths.
Provide technical guidance and mentoring to senior engineers, run design reviews, and partner with P5-level Engineering Leads on stack standardization.
Own performance, scalability, and resiliency for mission-critical cloud services.
Support department-wide technical planning and manage technical risks for critical site projects.

Requirements

Minimum 7 years of relevant experience as a software engineer or architect.
Production experience shipping guest-facing web applications, including modern front-end frameworks such as React with TypeScript and server-side rendering, plus backend services and APIs.
Strong web architecture knowledge, including HTTP, DNS, caching strategy, and API delivery paradigms such as REST and GraphQL.
Hands-on experience building and maintaining high-volume distributed services on AWS, including edge delivery and caching via CloudFront or a comparable CDN.
Proven experience leading a legacy platform migration or large-scale standardization effort through completion.
Ability to drive technical decisions beyond your team and explain complex tradeoffs to non-technical stakeholders.
Bachelor’s degree in Computer Science or related technical discipline, or equivalent practical experience.

Technologies

React, TypeScript, server-side rendering
APIs, identity integrations
DNS
Caching strategy
REST, GraphQL
Amazon Web Services (AWS)
CloudFront
Route 53
WAF
Varnish
Edge delivery

Preferred Qualifications

Production configuration of Varnish, HAProxy, or CloudFront, including cache policy design and interactions with experimentation and personalization.
Experience building developer tooling, debugging interfaces, or branch-based deployment models.
Gated AI-assisted development practice with incremental validation and human review of generated changes.
Observability and alerting in Datadog.

Location: Glendale, CA (onsite)

Compensation: USD 155,700 - 208,700 per year

View full job page →

Today

Sr Software Engineer

Disney Entertainment and ESPN Product & Technology Seattle, WA

Seattle, WA

Today

$144k - $202k/yr Full time Backend Developer Senior API

Apply Now

Job Description

The Senior Software Engineer role on the Content Platform Engineering team focuses on building early lifecycle systems for media playback. This includes work across content origination and greenlighting, distribution planning, metadata management, localization, and scheduling to support Disney’s media supply chain and content delivery platforms.

Responsibilities

Define platform capabilities by designing and implementing a suite of products and services that advance Disney’s media supply chain.
Innovate and scale a content platform that supports delivery for brands including Disney+, ESPN+, Hulu, ABC, Marvel, and Star Wars.
Build scalable, maintainable, and well-tested backend software solutions that can flex to meet requirements from multiple customers and stakeholders.
Collaborate with other software engineers and cross-functional teams.
Independently design, build, test, and deploy high quality software solutions.
Provide technical guidance and promote best practices across teams.
Maintain deep knowledge of core systems and how they interact with upstream and downstream dependencies.
Contribute to and review code, help establish standards, and work with engineers to meet product and design specifications.
Own fundamental platform performance, scalability, and resiliency.
Partner with stakeholders to refine requirements and propose solutions spanning multiple teams.
Support cross-functional troubleshooting of complex issues as needed.
Troubleshoot problems, fix defects, and improve reliability.
Mentor junior engineers and conduct code reviews.

Requirements

BS in Computer Science or a related technical discipline, or its equivalent.
5+ years of related experience designing backend architectures and delivering backend applications in a production environment.
Experience with backend technologies including Java, GraphQL, REST APIs, microservice architectures, and async programming.
Experience with the Spring Framework.
Experience architecting and delivering high volume, cached, fault tolerant, multi-threaded scalable systems.
Experience with data stores including MongoDB, Redis, Elasticsearch, Postgres, and DynamoDB.
Experience with AWS cloud services including AWS Lambda, EC2, S3, SQS, Step Functions, and Fargate.
Experience with build and deployment tools such as Docker, Gitlab-CI, Terraform/CloudFormation, and Jenkins.
Experience working in Agile/Scrum methodology.
Strong oral and written communication skills, with teamwork focus.
Motivation to learn and adapt to new technologies.
Expertise across the full application development lifecycle, including unit testing, code reviews, and documentation.
Strong communication skills and attention to detail.

Technologies

Java
GraphQL
REST APIs
Microservice architectures
Async programming
Spring Framework
MongoDB
Redis
Elasticsearch
Postgres
DynamoDB
AWS Lambda
EC2
S3
SQS
Step Functions
Fargate
Docker
Gitlab-CI
Terraform/CloudFormation
Jenkins

Benefits

A bonus and/or long-term incentive units may be provided as part of the compensation package.
Full range of medical, financial, and/or other benefits.

Preferred Qualifications

Previous work experience in media distribution.
Experience working with vendor teams to deliver high quality results.
Knowledge of performance testing and application profiling.
Strong curiosity about how Disney delivers the Magic and a desire to be a part of it.
Expertise with Java.
Expertise with AWS, Azure, or GCP.

View full job page →

Today

Software Engineer II - AI Performance

Disney Entertainment and ESPN Product & Technology New York, NY

New York, NY

Today

$125k - $167k/yr Full time Backend Developer APIs Artificial Intelligence

Apply Now

Job Description

Disney Entertainment and ESPN Product & Technology is hiring a Software Engineer II to strengthen reliability for operational AI systems. On the Reliability Insights team, you will design and build data and reporting pipelines that turn telemetry, AI agent interactions, and operational logs into measurable results for real-world performance, precision, and business impact.

This onsite role in New York, NY focuses on bridging backend engineering with data-driven evaluation. You will connect AI signals to incident lifecycles, quantify reliability outcomes, and deliver dashboards and metrics that help leadership and technical teams act on model health over time.

What you will do

Design, build, and maintain automated feedback pipelines that capture operational outcomes (confirmed incidents, false positives, dismissed alerts) and correlate them directly to AI model predictions and agent actions.
Create programmatic evaluation frameworks to track model precision, recall, and drift over time, including automated threshold alerts to trigger model tuning and reduce alert fatigue.
Build end-to-end data pipelines that link AI outputs to incident lifecycles, measuring business impact using metrics such as Service to Incident correlation, notification success rates, and Mean Time to Mitigation (MTTM).
Design and deploy scalable APIs, metrics layers, and single-pane model health dashboards that communicate AI ROI, operational health, and performance narratives to both leadership and technical stakeholders.
Implement mechanisms to capture structured end user feedback and feed real-world usage signals back into ongoing model improvement cycles.

Qualifications

3+ years of applicable experience in backend and data pipeline engineering, including building scalable APIs (for example, FastAPI, Flask) and metrics or insight generation platforms.
Strong data platform engineering experience with distributed processing tools such as PySpark, SQL, Pandas, Databricks, and Snowflake for telemetry processing and analysis.
Practical knowledge of model evaluation concepts including precision, recall, model drift, and ground-truth labeling systems.
Hands-on experience with modern development workflows: GitHub (version control), Docker (containerization), and cloud-native deployments on AWS and EKS.
Proficiency with AI-assisted development tools such as Cursor and Claude Code to increase engineering velocity.
Strong analytical skills to translate complex system telemetry and operational logs into reliability metrics and business insights.
Excellent cross-functional collaboration and communication, including partnership with operational teams such as SRE and DevOps to turn raw data into actionable insights.

Technologies

FastAPI, Flask, PySpark, SQL, Pandas, Databricks, Snowflake
GitHub, Docker, AWS, EKS
Cursor, Claude Code

Compensation

The hiring range for this position in New York, NY is $124,900.00 to $167,400.00 per year.
Base pay may vary based on internal equity and the candidate’s geographic region, job-related knowledge, skills, and experience.
A bonus and/or long-term incentive units may be included in the compensation package, along with medical, financial, and/or other benefits, depending on the level and position offered.

Education: Bachelor’s degree in Computer Science, Engineering, or equivalent experience.

View full job page →

Today

Android Developer

Realign LLC Irving, TX

Irving, TX

Today

$89k - $89k/yr Full time Backend Developer Android Android Developer

Apply Now

Job Description

Realign LLC is hiring a Full Time Android Developer for an onsite role in Irving, TX. This position centers on building and maintaining Android applications with a focus on clean architecture, reliable integrations, and solid quality practices using established Android tooling.

The work involves partnering across engineering and product disciplines while delivering features that meet project requirements, performing debugging and testing, and ensuring application behavior is consistent across Android versions and device sizes. The role also requires practical security knowledge for data protection and secure REST API consumption.

Key Responsibilities

Review project requirements: Analyze project specifications to determine application scope and features.
Develop application architecture: Design the application structure and components, including user interface, database, and backend integration.
Fix bugs and validate builds: Debug and resolve issues found during testing so the application functions correctly.
Collaborate with the team: Work with other developers, designers, and product managers to support timely delivery.

Requirements

5+ years of experience developing and maintaining Android applications.
Proficiency building Android apps with Android Studio and the Android SDK.
Strong knowledge of Java and Kotlin.
Solid understanding of the native mobile application development life cycle.
Strong knowledge of the Android SDK, differences across Android versions, and strategies for supporting multiple screen sizes.
Strong understanding of Android UI design principles, patterns, and best practices.
Advanced understanding of consuming REST APIs in Android applications.
Deep understanding of security for data at rest and in transit, including cert-pinning, keychain storage, and payload encryption/decryption.
Experience writing Unit Tests and UI Tests to support application quality.
Experience with Android Jetpack components.
Experience using JIRA and Confluence.
Proficient with GIT or comparable code versioning tools.
Ability to understand and integrate third-party libraries.
Strong communication, critical thinking, and creative problem-solving skills.