Lead I - Software Engineering

Who we are:

At UST, we help the world’s best organizations grow and succeed through transformation. Bringing together the right talent, tools, and ideas, we work with our clients to co-create lasting change. Together, with over 30,000 employees in 30+ countries, we build for boundless impact, touching billions of lives in the process. Visit us at UST.com.

Summary:

UST is looking for a Senior Software Engineer to design, build, and ship features for a cloud-hosted platform. The ideal candidate writes production-quality Python, packages services in containers, and deploys them on AWS using blue/green release strategies, working across the full delivery lifecycle from design through to operation.

The Opportunity:

Job Description

Design, develop, and maintain backend services and features, packaging them as containers and running them on AWS ECS and Fargate. You will define infrastructure with Terraform, plan and support blue/green deployments with rollback readiness, and automate build, test, and deployment stages with Harness pipelines. You will also review code, mentor junior engineers, and raise the engineering standard across the team. The role works closely with product, QA, and DevOps teams.

Key Roles & Responsibilities:

What you need:

Required Skills:

• 5+ years of professional software engineering experience.
• Strong proficiency in Python for building production services.
• Hands-on experience with containerisation using Docker.
• Working knowledge of Terraform for provisioning infrastructure.
• Experience with blue/green deployments or similar zero-downtime release strategies.
• Solid understanding of AWS services and architecture, specifically ECS, Fargate, VPC (networking, subnets, security groups), NLB, and ALB.
• Experience working in an Agile environment.
• Strong problem-solving, debugging, and communication skills.

  Desired Skills:

• Experience automating Harness deployments and pipelines.
• Working knowledge of Java, as the Castlight Test Framework is written in it.
• Regular use of GenAI tools in daily engineering work, such as Codex, Claude, GitHub Copilot, or similar.
• Experience with automated testing frameworks and test-driven development.
• Familiarity with CI/CD practices and observability tooling such as CloudWatch, Prometheus, or Grafana.
• AWS certification at any associate or professional level.

  Qualification:

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.

  What we believe:

  We’re proud to embrace the same values that have shaped UST since the beginning. Since day one, we’ve been building enduring relationships and a culture of integrity. And today, it’s those same values that are inspiring us to encourage innovation from everyone, to champion diversity and inclusion, and to place people at the centre of everything we do.

  Humility: We will listen, learn, be empathetic, and help selflessly in our interactions with everyone.

  Humanity: Through business, we will better the lives of those less fortunate than ourselves.

  Integrity: We honour our commitments and act with responsibility in all our relationships.

  Equal Employment Opportunity Statement

  UST is an Equal Opportunity Employer. We believe that no one should be discriminated against because of their differences, such as age, disability, ethnicity, gender, gender identity and expression, religion, or sexual orientation.

  All employment decisions shall be made without regard to age, race, creed, colour, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status, or any other basis protected by federal, state, or local law.

  UST reserves the right to periodically redefine your roles and responsibilities based on the requirements of the organization and/or your performance.

• To support and promote the values of UST.
• Comply with all Company policies and procedures.