Openapi

Openapi Developer Jobs

9 jobs found

8d ago

Sr.Java Full Stack Developer

System One Pittsburgh, PA

Pittsburgh, PA

8d ago

$120k+/yr Contract Backend Developer Senior Angular

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Job Description

This contract to hire opportunity is on site in Pittsburgh, PA and offers a competitive salary of USD 120,000 per year alongside a robust benefits package. The role centers on designing Java API services and RESTful microservices, building front end with Angular, and delivering backend work with Spring Boot and containerization. It supports a collaborative, security-minded team culture that emphasizes scalable, high-performance software delivery.

Benefits

Medical benefits
Dental benefits
Vision benefits
Spending accounts
Life insurance
Voluntary plans
401(k) plan

Responsibilities

Design, build, and maintain Java API services, including RESTful endpoints and microservices, with a focus on scalability, security, and performance.
Collaborate on front-end UI development using Angular, HTML, and CSS to create intuitive user interfaces.
Establish and optimize API standards, working with cross-functional teams to deliver large-scale features.
Develop, test, and deploy backend components using Spring Boot within a microservices and containerized environment (OpenShift and Kubernetes).
Integrate Java applications with databases such as Oracle, SQL Server, MongoDB, and messaging systems like Apache Kafka.
Utilize DevOps tools including Jenkins, uDeploy, GitHub, and CI/CD pipelines to automate workflows and enable continuous delivery.
Review design documents, create technical system designs, and translate requirements into functional solutions.
Collaborate with API developers, business analysts, and QA teams within an Agile environment.
Research and apply modern libraries and technologies to accelerate development and enhance security.

Requirements

6+ years of Java API development experience with REST APIs, Spring Boot, XML, JSON, and Swagger.
6+ years of experience developing and consuming SOAP and REST web services in production environments.
5+ years of front-end UI development experience using Angular, HTML, and CSS.
Hands-on experience with OpenShift, containerization, Kubernetes, and microservices architecture.
3+ years working with GitHub, Jenkins, and CI/CD pipelines.
Proficiency with client-side technologies such as Node.js and Angular 8+
Experience with Kafka, MongoDB, and integrating Java applications with Oracle/SQL Server databases.
Strong understanding of security best practices to prevent vulnerabilities in code.
Excellent collaboration, communication, and interpersonal skills in an Agile team environment.

Technologies

Java
REST API
Spring Boot
XML
JSON
Swagger
SOAP
Angular
HTML
CSS
OpenShift
Kubernetes
microservices
Oracle
SQL Server
MongoDB
Apache Kafka
Jenkins
uDeploy
GitHub
CI/CD pipelines
Node JS
Angular 8+

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9d ago

Backend Software Engineer (API-focused)

Off Duty Management Katy, TX

Katy, TX

9d ago

$110k - $120k/yr Full time Backend Developer API APIs

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Job Description

Off Duty Management is seeking a mid‑level Backend Software Engineer focused on API development to join their on‑site team in Katy, Texas. In this role, you will design, build, and maintain FastAPI microservices that power the OfficerTRAK platform, collaborating with frontend, mobile, and DevOps engineers to ensure API contracts and data models align with product needs.

Responsibilities

Design and implement production‑grade FastAPI services, establishing clean, versioned RESTful API contracts, request/response schemas via Pydantic, and clear service boundaries within a microservice ecosystem.
Own data modeling and query design, creating normalized PostgreSQL schemas, optimizing SQL queries, and managing migrations with tooling like Alembic as services evolve.
Develop reliable asynchronous workflows, building and maintaining Celery tasks and queues for background processing, retries, and scheduled jobs.
Deliver and operate services on the Azure/Kubernetes platform, containerizing components, deploying to AKS, and diagnosing live production issues.
Integrate authentication, authorization, and security from inception, implementing OAuth2/JWT auth, RBAC, and adhering to API security best practices (OWASP API Top 10, input validation, secrets management).
Write meaningful, layered test coverage including unit, integration, and functional/end‑to‑end tests (pytest) to enable rapid, reliable shipping.
Participate in code reviews and design discussions, offering and incorporating feedback to guide API and data model decisions across the team.
Instrument services for observability with logging, metrics, and tracing to facilitate quick diagnosis in production.
Collaborate cross‑functionally with frontend, mobile, and DevOps engineers to define API contracts and keep services aligned with product needs.
Contribute to CI/CD pipelines, maintaining automated build, test, and deployment workflows for the services you own.

Requirements

3+ years of professional backend development experience with production Python workloads.
Hands‑on expertise in building production APIs with FastAPI.
Strong knowledge of relational database design, normalization, and SQL optimization (PostgreSQL preferred).
Experience with Celery or an equivalent distributed task queue for asynchronous processing.
Experience deploying and operating services in Kubernetes, ideally on Azure (AKS).
Practical experience writing unit, integration, and functional tests (pytest or similar) as part of normal development workflows.
Working knowledge of authentication and authorization standards (OAuth2, JWT, API keys, RBAC).
Understanding of API security practices (OWASP API Top 10, input sanitization, secrets management, rate limiting).
Comfort with Git‑based collaboration (pull requests, code reviews, branching strategies).
Familiarity with containerization (Docker) and CI/CD pipelines.
Clear communication and a collaborative, ownership‑driven approach to engineering work.

Technologies

Python, FastAPI, PostgreSQL, Pydantic, Alembic
Celery, Redis, RabbitMQ, Kafka
Kubernetes, AKS, Azure
Pytest, OAuth2, JWT, API keys, RBAC
OpenAPI/Swagger, Docker
OpenTelemetry, Prometheus, Grafana
Terraform, Helm, Azure Key Vault, Azure Container Registry
Azure Monitor / App Insights

Preferred Skills and Qualifications

Experience with Azure‑specific services (Azure Key Vault, Azure Container Registry, Azure Monitor / App Insights).
Familiarity with API documentation tooling (OpenAPI/Swagger).
Experience with message brokers supporting Celery (Redis, RabbitMQ).
Experience with database migration tooling (Alembic).
Exposure to observability stacks (Prometheus, Grafana, OpenTelemetry) and distributed tracing.
Exposure to Infrastructure as Code (Terraform, Helm).
Understanding of domain‑driven design or broader microservice architecture patterns.
Experience scaling APIs for a growing SaaS platform.

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12d ago

Cleared UI UX Front End Developer

Amentum Vienna, VA

Vienna, VA

12d ago

$125k - $140k/yr Full time Angular API APIs

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Job Description

Amentum is seeking a cleared UI/UX front-end developer to join our Vienna, Virginia team, supporting a federal client with enterprise cloud applications. This role emphasizes crafting intuitive interfaces and site concepts using modern front-end technologies, including Angular and Node.js, all within an Agile environment and CI/CD workflows.

Responsibilities

Code with the latest Angular 20+ versions, Node.js, NPM, RxJS, and Bootstrap.
Support the integration of user interfaces with various applications.
Contribute to site concepts, interface design, and the architecture of enterprise applications.
Collaborate on designing software tools and subsystems to enable reuse and domain analysis.
Test, debug, and refine software to deliver the required product.
Enhance software to reduce operating time and improve efficiency; modify or create software to ensure cross-system integrity.
Develop new software and adjust existing solutions to maintain efficiency and interoperability between systems and applications.
Provide support in developing the site concept, interface design, and architecture of the website.

Requirements

TS/SCI clearance or SCI eligibility with willingness to obtain a polygraph.
Bachelor’s degree plus at least 3 years of experience as a dedicated Web Software Developer.
Familiarity with HTTP and RESTful communication.
Understanding of Swagger.
Familiarity with Claude or other AI interfaces.
Experience with Playwright testing framework and Angular unit tests.
Experience with design tools such as Adobe or Sketch for wireframes and prototypes.
Understanding of user research methodologies to gather insights about user needs.
Ability to create wireframes and interactive prototypes.
Basic proficiency in HTML, CSS, and JavaScript.
Hands-on experience with Angular 20+, Node.js, NPM, RxJS, and Bootstrap.

Technologies

Angular 20+ (front-end)
Node.js
NPM
RxJS
Bootstrap
AWS
Azure
Swagger
Claude
Playwright
HTML
CSS
JavaScript
HTTP
RESTful communication
Adobe
Sketch

Benefits

401(k) matching
Dental insurance
Flexible spending account
Health insurance
Health savings account
Life insurance
Paid time off
Referral program
Vision insurance

Pay

Salary: USD 125,000 - 140,000 per year

Application Question(s)

Do you have at least 3 years of professional experience in UI/UX development and design?

Security Clearance

Top Secret (Required)

Work Location

In person in Vienna, VA

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20d ago

Senior Full Stack Java Developer with GraphQL Experience

CGI Group, Inc. Pittsburgh, PA

Pittsburgh, PA

20d ago

$71k - $157k/yr Full time Backend Developer Senior Angular

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Job Description

Senior Full Stack Java Developer with an Angular focus, based in Pittsburgh, PA, responsible for building secure, scalable GraphQL and RESTful APIs and backend microservices for CGI Group, Inc. The role offers a salary range of USD 70,800 to 156,700 per year and requires a minimum of three years of experience.

Responsibilities

Design and implement front end components with Angular, while developing supporting backend APIs and microservices.
Build and maintain GraphQL APIs, covering schema design, resolvers, queries, mutations, and subscriptions.
Develop and support RESTful and GraphQL services that integrate with internal and external systems.
Create user interfaces using Angular, JavaScript, TypeScript, and Node.js.
Develop Java services with Spring Boot and validate them within a microservices architecture.
Collaborate with business, design, and technical teams to define API contracts and data models.
Optimize GraphQL queries for performance, scalability, and security.
Produce and maintain API documentation using Swagger/OpenAPI and GraphQL schema documentation.
Research and recommend frameworks, libraries, and tools to improve development efficiency.

Requirements

6+ years of Java/J2EE development experience.
3+ years of GraphQL development experience, including schema design and modeling.
3+ years of GraphQL development experience, including query and mutation development.
3+ years of GraphQL development experience, including resolver implementation.
3+ years of GraphQL development experience, including GraphQL security and performance optimization.
3+ years of GraphQL development experience with Apollo Server, Apollo Client, or equivalent frameworks.
6+ years of experience with Angular, JavaScript, TypeScript, HTML, CSS, and Node.js.
3+ years developing RESTful and GraphQL APIs.
3+ years building containerized microservices and deploying applications in OpenShift or Kubernetes environments.
Experience with Spring Boot, REST APIs, GraphQL APIs, JSON, XML, Swagger/OpenAPI.
Experience with GitHub, Jenkins, CI/CD pipelines, and Agile development methodologies.
Experience writing unit and integration tests for Java and JavaScript applications.

Technologies

Java, J2EE
Angular, AngularJS
TypeScript, JavaScript, Node.js
Spring Boot
OpenShift, Kubernetes
GraphQL, REST, JSON, XML
Swagger/OpenAPI
GitHub, Jenkins, CI/CD
JWT
React
HTML, CSS
Apollo Server, Apollo Client
GraphQL Federation
Kafka, RabbitMQ

Benefits

Competitive compensation package
Comprehensive insurance options
401(k) with matching contributions and share purchase plan
Paid time off for vacation, holidays, and sick leave
Paid parental leave
Learning opportunities and tuition assistance
Wellness and well-being programs

Skills

AngularJS
GitHub
JavaScript
Jenkins
JSON Web Token (JWT)
Node.js
OpenShift
React
RESTful APIs
Spring Boot
XML

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21d ago

Software Engineer Lead - Java, Spring boot, Kafka

PNC Financial Services Group Birmingham, AL

Birmingham, AL

21d ago

$68k - $173k/yr Full time Backend Developer Senior API

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Job Description

PNC Financial Services Group is seeking a Software Engineer Lead with strong Java, Spring Boot, and Kafka expertise to guide API driven development within its Retail Tech ecosystem. This onsite role in Birmingham, AL involves steering a mid to senior engineering team, delivering scalable API services, and coordinating integration work with databases and external partners. The position combines hands on design with technical leadership to advance enterprise capabilities.

Responsibilities

Primary focus on API development and core architecture decisions
Design, develop, and maintain RESTful and GraphQL APIs
Lead a team of mid-level to senior developers
Work with event streaming using Kafka
Build scalable, secure, high performing API services
Define API contracts and documentation using OpenAPI/Swagger
Integrate APIs with databases and third party services
Optimize API performance and reliability
Implement authentication and authorization with OAuth2 and JWT
Collaborate with cross functional teams
Conduct code reviews and enforce API standards
Assist with CI/CD pipelines and GitOps practices
Collaborate with DevOps teams
Troubleshoot deployment issues

Requirements

Strong experience in API development including Java 8/17/21, Spring Boot, and Kafka
Proven experience building RESTful APIs
Knowledge of API security and lifecycle management
Experience with Oracle and MySQL databases
Familiarity with microservices architecture
Minimum 3 years of relevant experience
Bachelors degree

Technologies

Java
Spring Boot
Kafka
Oracle
MySQL
Kubernetes
AWS, Azure, or GCP
OpenAPI/Swagger
GraphQL

Benefits

Medical and prescription drug coverage with a Health Savings Account option
Dental and vision coverage
Life insurance for employee and dependents
Short and long term disability protection
401(k) with company match, pension, and stock purchase plans
Dependent care reimbursement account
Back up child and elder care
Adoption, surrogacy, and doula reimbursement
Educational assistance including select programs fully paid
Wellness program with financial incentives
Maternity and parental leave
Up to 11 paid holidays each year
9 occasional absence days per year
15 to 25 vacation days per year depending on career level and tenure

Job Description

Creates and leads the technical design and development of software solutions
Proposes and designs software solutions to address complex business needs; prepares technical and procedural documentation
Facilitates complex problem resolution
Provides technical guidance and support to colleagues; reviews coding, testing, and documentation of software
Applies modern principles, methodologies, and tools to advance business initiatives and capabilities

Pay Transparency

Base salary: $67,500.00 – $172,500.00 per year

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30d ago

Senior Software Engineer II, Enterprise Platform

Lila Sciences San Francisco, CA

San Francisco, CA

30d ago Closed

$180k - $256k/yr Full time Backend Developer Senior API

This position is no longer accepting applications (closed Aug 9, 2026).

Job Description

Benefits and Culture

Location: onsite in San Francisco, CA. This role offers a competitive annual salary range of USD 180,000 - 256,000. You will join a mission-driven organization that values truth, trust, curiosity, grit, and velocity, delivering startup‑level momentum while tackling problems of historic scale.

Our internal scientists span physical and life sciences and are first-class users of the platform. You will design for both researchers and external developers, collaborating across infrastructure, data, applications, and science teams to deliver reliable backend systems. Lila Sciences is an equal opportunity employer focused on a diverse, inclusive culture.

About Lila

Lila Sciences is building Scientific Superintelligence to solve humankind's greatest challenges. Rather than hard-coding expert knowledge into tools, Lila develops systems that can learn for themselves.

We combine advanced AI models with proprietary AI Science Factory instruments into an operating system for science that executes the entire scientific method autonomously, accelerating discovery at unprecedented speed, scale, and impact across medicine, materials, and energy. Learn more at www.lila.ai.

Responsibilities

Multi-Tenancy & Authorization: design secure tenant isolation, authentication, authorization, and auditing across customer organizations, including boundaries and isolation guarantees required for enterprise and regulated deployments. Build resilient backend services in Python with FastAPI and own multi-tenant data schemas and tenant-aware query patterns.
Tenant Self-Serve & Lifecycle: develop services for tenant provisioning, self-service administration, and onboarding workflows. Support billing, pricing, and metering surfaces for enterprise customers.
Public & Agent-Facing APIs: own and evolve public APIs (REST, streaming, async) for human developers and autonomous agents, ship SDKs, and define interfaces that agents call.
MCP & Agent Integration: craft integration paths that connect MCPs, agents, and data into the platform, including onboarding customer-owned MCPs/agents/data and ensuring isolation and trust within a tenant.

Requirements

7+ years of backend software engineering with meaningful experience in APIs, backend services, or platform infrastructure.
Strong expertise in one or more: API design and versioning, multi-tenancy, authentication/authorization, or backend services at scale.
Proficiency in Python (FastAPI), Kubernetes, AWS, and databases (SQL or document databases).
Commitment to developer experience, writing clear errors, and preserving backward compatibility.
Demonstrated ability to ship working code regularly, debug production issues, and own systems end-to-end.
Collaborative mindset across infra, data, apps, and science teams; build for internal scientists and external developers, communicating tradeoffs clearly in ambiguous situations.

Technologies

Python
FastAPI
Kubernetes
AWS
SQL databases
Document databases
REST
Streaming
Async
OpenAPI
OIDC
OAuth 2.0
MCP

Bonus Points

Experience building or maintaining multi-tenant SaaS platforms with audit, compliance, or isolation requirements (SOC 2, HIPAA, GxP, FedRAMP).
Shipped public developer platforms, APIs, or SDKs and understand what makes integrations durable.
Familiarity with MCP, OpenAPI, or OIDC/OAuth 2.0.
Worked on tenant isolation patterns (row-level security, per-tenant schemas, search-path isolation).
Experience with policy-based authorization (OPA) or externalized authorization models.

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1mo ago

Senior Software Engineer

Hilton McLean, VA 🇺🇸 Remote

McLean, VA

1mo ago Closed

$130k - $145k/yr Full time Backend Developer Senior API

This position is no longer accepting applications (closed Aug 3, 2026).

Job Description

Hilton is seeking a Senior Software Engineer to design and scale payments microservices from a base in McLean, VA, with the flexibility of remote work across the United States. The role centers on building robust backend services in Java, communicating via REST APIs, and ensuring reliable financial transactions through disciplined testing and open API specifications. The position offers a salary range of USD 130,000 to 145,000 per year.

Responsibilities

Design and develop scalable payments microservices using JDK 11 and JDK 21, leveraging frameworks such as Spring Boot, Dropwizard, JAX-RS, and Java REST APIs.
Build and optimize CRUD operations across services with MySQL, prioritizing performance, data integrity, and reliability in financial transactions.
Practice Test-Driven Development, write unit tests with JUnit, and integrate tests with Cucumber to ensure robustness and maintainability.
Participate in peer code reviews via Git and Stash, providing constructive feedback to raise code quality and enforce best practices.
Generate and maintain API specifications and service contracts using OpenAPI/Swagger Codege to enable seamless integration across internal and external systems.
Travel domestically up to 10% as part of the role.

Requirements

Bachelor's degree or foreign equivalent in Information Systems Technologies, Software Engineering, or a related field.
Three years of experience in technology, software engineering, or a related occupation.
Experience developing and enhancing enterprise backend microservices using Java.
Frontend features using Angular.
Building and maintaining RESTful APIs with Spring Boot, JAX-RS, Jersey, and Lombok for CRUD operations, service orchestration, and system integration.
Designing Angular components and leveraging RxJS for state management and reactive programming.
Applying Test-Driven Development with JUnit, Karma, and Jasmine to ensure quality.
Conducting unit and integration testing with frameworks such as JUnit and Cucumber.
Contributing to projects through CI/CD pipelines and build tools such as Maven for automated builds, testing, and deployments.
Experience working with relational databases.
Ability to collaborate in Agile environments including Scrum and Kanban to deliver scalable solutions.

Technologies

JDK 11, JDK 21
Spring Boot
Dropwizard
JAX-RS
Jersey
Lombok
MySQL
JUnit
Cucumber
Git
Stash
OpenAPI/Swagger Codege
Angular
RxJS
Karma
Jasmine
Maven

Benefits

Health, dental, and vision insurance
401(k)
PTO
Life and disability insurance

Join an award-winning workplace culture

Hilton emphasizes delivering exceptional experiences for guests while fostering an outstanding environment for its Team Members. As a global leader in hospitality, the company has welcomed more than 3 billion guests worldwide and remains committed to its founding vision of spreading the light and warmth of hospitality. Hilton's culture has earned repeated recognition on the World’s Best Workplaces lists compiled by Great Place to Work and Fortune. With a portfolio of world-class brands and a company-wide pledge to creating memorable stays, Hilton continues to set new standards for the travel industry.

Whether you are starting your career or exploring something new, Hilton supports professional growth at every stage. This is a place to join for the long term, contributing to remarkable stays while building a lasting career. For more insight into life at Hilton, the Careers Blog offers a window into what makes Hilton a great place to work.

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1mo ago

Web Software Developer (UI)

Amentum Remote 🌍 Remote

Remote

1mo ago Closed

$135k - $145k/yr Full time Angular API Bootstrap

1mo ago

Software Engineer

Liberty Mutual Indianapolis, IN

Indianapolis, IN

1mo ago Closed

$83k - $157k/yr Full time Backend Developer API APIs

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