Senior Software Engineer, Backend

About the role

Cresta is expanding its engineering presence in Romania and inviting experienced backend engineers to establish the technical foundation for a new hub in Cluj. In this role, you own the backend systems that power real-time customer conversations for global brands. Your work directly shapes platform reliability and latency targets for every customer interaction. As an early member of this hub, you will define engineering standards and contribute to long-term architectural direction for the site and the broader organization. This is a full-time position. Compensation for this role includes a base salary, equity, and a variety of benefits. Actual base salaries are determined based on candidate-specific factors such as experience, skillset, and location, as well as applicable local pay requirements. Cresta is actively hiring for this role in Romania, the United States, and Canada.

What you'll do

• Design scalable ingestion paths for conversation data as it enters the platform and moves into analysis.
• Architect message streaming layers capable of handling audio and text while adhering to strict latency goals.
• Craft reusable API surfaces using gRPC, REST, and WebSocket to serve both internal and external consumers.
• Optimize query patterns and storage layouts to safeguard throughput under peak loads.
• Implement deployment pipelines that align with Kubernetes workflows and cloud operational expectations.
• Audit cross-channel customer experiences and translate customer outcomes into technical trade-offs.
• Champion technical ownership of critical platform components while mentoring peers on best practices.
• Partner with product teams to deliver features that support revenue and efficiency metrics.

Requirements

• Hold a Bachelor's degree in Computer Science or a related discipline, combined with ten years of backend engineering experience.
• Design and maintain resilient APIs across protocols such as gRPC, REST, and WebSocket.
• Process real-time streaming audio and video reliably at high throughput with minimal delay.
• Demonstrate expertise in high-performance schema design and indexing for demanding query workloads.
• Operate containerized services on Kubernetes and use major cloud platforms in production environments.
• Write robust tests and observability signals that clarify system behavior and surface issues early.
• Communicate clearly with both technical and non-technical stakeholders to align on priorities and constraints.
• Maintain a strong focus on performance, correctness, and operational stability in production systems.

Practical notes

This role is open to candidates in Romania, the United States, and Canada. Cresta operates as a remote-first organization, offering opportunities to work with a global team across Europe, the United States, and Canada. Over time, the company aims to create a co-working space in Romania, moving toward a hybrid work environment. This position is full-time. Compensation for this role includes a base salary, equity, and a variety of benefits. Actual base salaries are determined based on candidate-specific factors such as experience, skillset, and location, as well as applicable local pay requirements. Cresta is actively hiring for this role in Romania, the United States, and Canada.

Application details

Cresta provides equal opportunity for all applicants. The listed compensation range reflects minimum and maximum values for the role based on location and other factors. Candidates are encouraged to , as role responsibilities and requirements may vary by location.

Cresta has observed a rise in recruiting impersonations across the industry, where scammers attempt to access candidates' personal and financial information through fake interviews and offers. All Cresta recruiting email communications will always originate from the @cresta.ai domain. Any outreach claiming to be from Cresta via other sources should be ignored. If you are uncertain whether you have been contacted by an official Cresta employee, reach out to recruiting@cresta.ai.

This role is open to candidates in Romania, the United States, and Canada. Cresta operates as a remote-first organization, offering opportunities to work with a global team across Europe, the United States, and Canada. Over time, the company aims to create a co-working space in Romania, moving toward a hybrid work environment.

About the company

Save money, increase revenue, and build customer loyalty with the only unified platform for human and AI agents that transforms every customer experience.