Software Engineer

Hallo offers AI agents for global hiring that evaluate candidates’ soft skills, hard skills, and language proficiency in over 60 languages through 200+ AI-powered interviews, along with additional assessments such as simulations, role-plays, and cognitive tests. We’re on a mission to help organizations hire smarter, faster, and at scale through AI. Learn more at

Job Description

As a Software Engineer at Hallo, you will play a central role in building AI agents that transform global hiring. You will help develop the best all-in-one platform for AI interviews, AI-powered assessments, and intelligent agents that support messaging, skill evaluation, sourcing, interviewing, and hiring.

This role focuses on designing, developing, and deploying scalable, secure, and high-performing systems that power AI-driven hiring experiences. You will collaborate with cross-functional teams across Product, AI/ML, and Customer Success to bring innovative solutions from concept to production.

Software Engineers at Hallo are not just builders – they are problem solvers who continuously improve our platform to ensure accuracy, fairness, and reliability in global hiring. By joining us, you’ll be shaping the future of AI in talent acquisition and enabling organizations worldwide to make better, faster, and smarter hiring decisions.

Company Culture

At Hallo, our culture is shaped by six core values:

• Speed :We move fast, stay agile, and focus on execution.
• Trust : We collaborate on a foundation of trust, grounded in skill and integrity.
• Ownership :We take initiative, act with accountability, and deliver results.
• Kindness :We treat others with empathy, respect, and friendliness.
• Excellence :We strive for the highest standards and continuous improvement.
• Dream Big :We embrace bold ideas and push boundaries to shape the future.

Together, these values spell STOKED, capturing the energy, ambition, and excitement that define how we work.

Responsibilities

1. AI Agent Development

Build and scale AI agents for interviews, assessments, messaging, and candidate sourcing.

Integrate advanced AI capabilities (ChatGPT and Gemini) into production systems.

Ensure adaptive assessment experiences (e.g., CEFR-aligned language testing, cognitive and skill evaluations).

Develop back-end services in Node.js with TypeScript and front-end interfaces in React and Reactstrap.

Manage Firebase services (authentication, database, image storage) and AWS hosting.

Write clean, testable, and maintainable code with strong attention to scalability and performance.

Partner with Product, AI/ML, and Customer Success to deliver features that solve real hiring challenges.

Participate in architecture design, code reviews, and sprint planning.

Contribute to improving developer workflows with GitHub, CI/CD, and agile best practices.

4. Quality & Security

Follow compliance and security standards (SOC 2, ISO 27001, GDPR, EU AI Act).

Implement monitoring, testing, and debugging practices to ensure platform reliability.

Maintain strong engineering discipline and advocate for best practices.

Research and adopt emerging frameworks, libraries, and AI tools to strengthen Hallo’s technology.

Improve developer efficiency and scalability with tooling and automation.

Mentor teammates and foster a collaborative, innovation-driven culture.

You’ll thrive in this role if you

Have 2+ years of software engineering experience (SaaS or AI platforms preferred).

Are experienced with Firebase, AWS, and GitHub workflows.

Have worked with AI/ML APIs or frameworks, and are curious about applying LLMs, speech, and avatar technologies in production.

Care about building secure, compliant systems, and ideally have experience in enterprise SaaS or regulated industries.

Enjoy collaborating across teams, translating product requirements into technical solutions.

Thrive in fast-paced environments, balancing scalability, performance, and innovation.

Are passionate about shaping the future of global hiring through AI.

Hallo takes into account a variety of factors when extending an offer, including the scope and responsibilities of the role, a candidate’s experience, education and training, key skills, internal equity, and market considerations such as location and business needs.

As part of our total rewards package, we provide comprehensive benefits, including health coverage, generous paid time off (PTO), a parental leave program, the flexibility to work from home two days per week, and fully remote options during the summer and winter months.