Senior Engineer

CoStar Group, Inc.; Makati; On-site; PHP 1,500,000 - 2,100,000; Full time

Job summary

CoStar Group, Inc. is seeking a Senior Engineer to build high-quality, scalable solutions. You will work with engineers and tech leads to improve system health, debt, and performance while mentoring junior engineers.

Key focus areas include cloud platforms, CI/CD, microservices, and RESTful APIs, with collaboration across product and cross-functional teams to meet customer needs.

Qualifications

• Designing scalable software for high-traffic sites and complex mobile apps.
• Experience with cloud platforms (AWS/Azure/GCP) and DevOps practices.
• Strong REST API design, security, and authentication patterns (JWT/OAuth2).

Responsibilities

• Lead design and development with engineers and tech leads.
• Mentor junior engineers and collaborate with product managers.
• Support on-call rotations and incident response.

Skills

Node.js (TypeScript)

React (TypeScript)

Python

.NET (C#)

REST API design

PostgreSQL

AWS

CI/CD

Agile

Docker

Kubernetes

Education

Degree in Computer Science/Software Engineering

Tools

Git

Jira

Confluence

Job description

Senior Engineer

Job Description

Technical Excellence & Innovation Build high-quality, scalable, reliable, and performant solutions with engineers and tech leads. Champion engineering best practices and contribute to system health and technical debt improvements. Drive engineering efficiency and collaborate with tech leads to improve processes and systems.

Leadership & Collaboration Mentor junior engineers in solution design and development. Develop a strong understanding of the product and business domain. Work with Product Managers to ensure solutions meet customer and business needs.

Operations Participate in on‑call rotations and respond to incidents. Continuously improve processes and software quality to reduce incidents.

Experience Designing scalable software, high‑traffic websites, and complex mobile apps. Working with Tech Leads to optimize engineering practices. Cloud platforms (AWS, Azure, GCP), DevOps, CI/CD, Agile. Mentoring junior engineers and collaborating with cross‑functional teams. Microservices architecture and relational/non‑relational databases.

Technical Skills Deep expertise in at least one of: Node.js (TypeScript), React (TypeScript), or Python — and comfortable across all three. Working knowledge of .NET (C# preferred) — you don't need to be an expert, but you can read, review, and contribute to .NET codebases when needed. Strong understanding of REST API design, security best practices, and authentication patterns (JWT, OAuth2, JWKS). Extensive experience with relational databases (PostgreSQL) — including schema design, query optimization, and migrations. Proven ability to apply Clean Architecture or similar structured design patterns in a production codebase. Strong experience with AWS (EC2, SQS, S3, CloudFront) and cloud‑native patterns. Experience designing and working with asynchronous/event‑driven systems (message queues, background workers). Track record of delivering high‑quality features in an Agile environment using Git, CI/CD, Jira, and Confluence.

Nice‑to‑have skills

• Experience with Auth0 or enterprise identity providers (SSO, M2M, multi‑tenant auth)
• Experience with observability tooling — New Relic, Mixpanel, CloudWatch
• A security‑first mindset — input validation, token verification, least privilege, avoiding common OWASP vulnerabilities
• Experience leading or significantly contributing to a platform migration or re‑architecture
• Familiarity with containerisation (Docker) and Kubernetes or Helm deployments

Education & Certifications

• Degree in Computer Science/Software Engineering.
• Bonus: AWS or other cloud certification.

Company Overview

CoStar Group is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We've continually refined, transformed, and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.

About Domain:

Domain is a leading property technology and services marketplace that is home to one of the largest portfolios of property brands in Australia, including the Domain, Allhomes and Commercial Real Estate (CRE) platforms. In 2025, Domain became part of CoStar Group (NASDAQ: CSGP), a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. Together, Domain and CoStar Group is dedicated to digitising the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.

Equity, Diversity & Inclusion

Domain is enthusiastically and unapologetically committed to fostering an equitable, inclusive work culture which reflects our customers and communities. We are proactively looking for candidates from all lived experiences, including people with disability, and people of all ages, ethnicities, cultures (including Aboriginal and Torres Strait Islander Peoples), faiths, sexual orientations, and gender identities (including trans and non‑binary people). We are committed to providing an equitable recruitment process for people with disability. If you require adjustments during the process we're here to support. If you wish to receive this job advertisement in an accessible format, or have a confidential chat about workplace adjustments, please contact our Equity, Diversity and Inclusion team at [e-mail] or leave a message on 1300 858 356 and we will get back to you.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug‑free workplace and perform pre‑employment substance abuse testing.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug‑free workplace and perform pre‑employment substance abuse testing CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and online marketplaces for over 37 years, giving us the perspective to create truly unique and valuable products and services. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry and for our customers. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate. CoStar Group is committed to creating a diverse environment and is proud to be an equal opportunity workplace and affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. CoStar Group is also committed to compliance with all fair employment practices regarding citizenship and immigration status. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access www.costargroup.com/careers as a result of your disability. You can request reasonable accommodations by sending an email to [e-mail].