Source Job

$104,000–$174,000/yr

  • Develop flexible, maintainable solutions using guidelines and standard practices.
  • Review, modify, and maintain existing systems, fixing issues and improving performance.
  • Design, develop, and maintain the organization’s API management platform, ensuring scalability and security.

.NET C# Python Java JavaScript

20 jobs similar to Software Engineer Principal

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India

  • Architect, maintain, and evolve the core API platform infrastructure used by all product teams.
  • Define and enforce API governance standards, including request/response schemas, naming conventions, error envelopes, authentication patterns, and security guidelines.
  • Lead the creation of tooling for SDK generation, documentation automation (OpenAPI), contract validation, and developer onboarding workflows.

HighLevel is an AI-powered, all-in-one white-label sales & marketing platform. They empower agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth, supporting a global community of over 2 million businesses.

US

  • Analyze, design, code, test, and implement technical solutions while providing production monitoring and support.
  • Collaborate with stakeholders across IT, product, analytics, and business teams to gather requirements.
  • Monitor production schedules and provide regular updates on progress and issues to leadership.

Jobgether uses an AI-powered matching process for job applications, ensuring quick, objective, and fair reviews against core requirements. The system identifies top-fitting candidates and shares the shortlist directly with the hiring company, where their internal team manages the final decision and next steps.

US Unlimited PTO

  • Contribute to the development, scaling, and maintenance of our API platform.
  • Write clean, maintainable code while delivering value to the business.
  • Troubleshoot and debug issues in the Verifiable Platform, contributing to continuous improvement of system reliability.

Verifiable is a credentialing and network monitoring platform built to help healthcare organizations optimize operations with error-free, fast verifications.

$110,000–$160,000/yr

  • Design and develop scalable web applications using .NET and Angular.
  • Build and enhance backend services leveraging Java, Node.js, or Python.
  • Participate in technical design discussions to shape system scalability and performance.

NBCUniversal is a leading media and entertainment company creating world-class content across film, television, and streaming. They own brands like NBC, Telemundo, Bravo, and Peacock, and are a subsidiary of Comcast Corporation committed to improving communities and championing an inclusive culture.

US

  • Analyze, design, code, test, and implement technical solutions.
  • Collaborate with IT, product, analytics, and business teams to gather requirements.
  • Monitor production schedules and provide updates on progress and issues.

Jobgether uses an AI-powered matching process to ensure applications are reviewed quickly, objectively, and fairly against the role's core requirements. The system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company.

India

Lead the development of robust, scalable web applications across frontend and backend. Architect and manage API-driven services to support complex analytics and data-intensive applications. Mentor engineers, provide technical guidance, and enforce software engineering best practices.

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements.

LATAM

  • Lead technical efforts across multiple teams, owning system reliability.
  • Mentor engineers and drive improvements that scale beyond a single team.
  • Design, develop, and maintain scalable and secure APIs and integration services.

Since 2012, Bugcrowd has been uniting the ingenuity of customers and trusted hackers with their data and AI-powered Security Knowledge Platform™.

$100,000–$140,000/yr

  • Debate, design, implement and deliver user stories on time, with high quality.
  • Write code to standards, implementing best practices.
  • Review code for testability, maintainability and adhering to best practices.

PerfectServe offers Best in KLAS assets in three categories: clinical communications, scheduling, and patient engagement solutions.

$100,649–$174,459/yr
US 4w PTO

  • Lead design activities and participate in building the foundation for API management.
  • Define solutions using Service Oriented Architecture (SOA) patterns.
  • Develop and implement enterprise-class security systems for production environments.

Experian is a global data and technology company, powering opportunities for people and businesses around the world.

$95,000–$115,000/yr
US

Seeking a Senior .NET Engineer to design, develop, and maintain complex web solutions, emphasizing secure, high-quality, and scalable software. This role involves hands-on development, technical leadership, and continuous improvement of systems and processes. The engineer will ensure compliance with security and accessibility standards in a remote, collaborative environment.

We are currently looking for a Senior .NET Engineer in Florida.

$90,000–$130,000/yr
US Canada

  • Lead the development and execution of product strategies for API features.
  • Define the vision and roadmap for key API features.
  • Prioritize and manage the roadmap and release plan for API features.

Applied Systems transforms the insurance industry with innovative software and services. They have 40 years of experience and a culture built on values that make them indispensable to each other.

$104,300–$166,900/yr
US

  • Design, develop, and maintain core OTA services including booking flows and reservation management.
  • Build and optimize integrations with third-party travel suppliers and payment gateways.
  • Architect scalable, distributed systems capable of handling high-volume transactions.

Casago is a vacation rental company where great people create exceptional experiences. They've grown into a trusted industry leader delivering genuine hospitality, valuing contributions, investing in growth, and giving the opportunity to make a real impact.

US

Design complex software systems, ensuring scalability, reliability, and performance. Develop clean, efficient, and maintainable code in accordance with best practices and coding standards. Collaborate with cross-functional teams to implement systems that meet all functional and security requirements and align with business objectives.

Citizant is a leading provider of professional IT services to the U.S. government.

$120,000–$150,000/yr

  • Build scalable, adaptable, and high-quality systems and features.
  • Collaborate with other engineering teams to communicate effectively and keep teammates updated.
  • Keep a sharp eye on user metrics to understand user behaviors and provide necessary care and support.

Carrot is a global fertility and family care platform supporting members and their families. They are trusted by leading multinational employers, health plans, and health systems and offer localized support in over 170 countries and 25 languages.

4w PTO

Design and implement scalable and efficient software architectures. Write, test, and debug complex code for new and existing software applications. Work closely with cross-functional teams to align development efforts with business goals.

GR8 Tech is a leading B2B provider of iGaming solutions that empowers operators to grow, lead, and win by delivering full-cycle tech solutions designed to scale.

$133,109–$239,596/yr

  • Lead a team of engineers focused on cloud platform services.
  • Oversee development of API Gateway and Swagger/OpenAPI specifications.
  • Manage AWS services including IAM, EC2, EFS, S3, Lambda, SNS, SQS, Kinesis, and EMR Studio.

Experian is a global data and technology company, powering opportunities for people and businesses around the world.

Global 2w PTO

  • Develop microservices under good practices and decoupled architectures.
  • Design, build and consume RESTful APIs.
  • Integrate internal systems and third-party services.

Tekton Labs is looking for a Backend Developer (.Net) for a global project in the financial sector.

$133,109–$239,596/yr

As a Senior Technical Program Manager, oversee the technical portfolio, create roadmaps, define milestones, and ensure the scalability, security, and reliability of products and platforms. Present to executives, hold engineering teams accountable, and help establish TPM practices. Manage dependencies across multiple teams and mitigating risk.

Experian is a global data and technology company, powering opportunities for people and businesses around the world.

US

  • Design, develop, and maintain high-quality, scalable web applications and platform services.
  • Build robust backend services and APIs using modern frameworks and cloud-native patterns.
  • Provide architectural direction, evaluate technical trade-offs, and guide long-term platform evolution.

We are seeking an experienced Senior Fullstack Developer who excels in both hands-on engineering and leading projects.