Junior Software Engineer (or Internship)

Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies, including United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every day.

Born from the Stanford AI Lab, Cresta has raised more than $270 million from the world’s leading investors, including a16z, Greylock, and Sequoia. Cresta’s leadership includes some of the leading minds in AI today. Our CEO, Ping Wu, founded and led Google's Contact Center AI and Vertex AI platforms before joining Cresta to build the future of AI-driven customer experiences.

Over the next few years, AI is going to redefine how people all over the world interact with businesses every day. Come build that future at Cresta.

About the Role - Junior Software Engineer (or Internship)

We’re looking for a Junior Software Engineer or Intern who’s excited to learn, curious about how real systems work, and comfortable jumping across the stack with guidance from experienced engineers.

Location requirement: Candidates must be based in Berlin.

What You’ll Do

• Build and improve backend services that power real-time AI features and search

• Help design and implement APIs for internal and external integrations

• Contribute across the stack when needed (backend, frontend, infrastructure)

• Work closely with product managers, ML engineers, and other software engineers

• Take tasks from implementation through deployment, with mentorship and code reviews
Participate in technical discussions and learn best practices through hands-on work

What We’re Looking For

• Bachelor’s degree in Computer Science or a related field (or currently pursuing one)

• Strong problem-solving skills and a solid foundation in computer science

• Familiarity with at least one backend language (Python, Go, Node.js, or similar)

• Basic experience working with APIs (REST, gRPC, or equivalent)

• Willingness to learn, ask questions, and collaborate with others

• Clear communication skills and a team-oriented mindset

Nice to Have

• 0–2 years of experience in software engineering (internships count)

• Exposure to databases like PostgreSQL, ClickHouse, Elasticsearch, or similar

• Basic understanding of system design, distributed systems, or cloud platforms (AWS, GCP, Azure)

• Some familiarity with frontend development (React or similar frameworks)

• Exposure to AI assisted development and AI workflows

Hiring Process (Please Read Carefully)

• All applicants will automatically receive an algorithmic coding challenge.

• We will only reach out to candidates who qualify based on their coding challenge results.

• Qualified candidates will then proceed to a series of technical interviews, followed by an HR interview.

Benefits

• Opportunity to transition to a full-time role after the internship

• Equity in the company upon full-time conversion