Senior Software Engineer, Backend (Voice Platform) at Cresta

Bucharest, Bucharest, Romania

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

Technology, AIIndustries

Requirements

Bachelor’s degree in Computer Science or related field
5+ years of experience in backend system development, distributed systems, or cloud infrastructure
Expertise in Go (or a similar systems language) with strong API and service design skills
Proven experience with scalable architectures using microservices, workflow orchestration, distributed caching, and cloud databases
Strong knowledge of Kubernetes, Docker, and modern cloud infrastructure
Solid understanding of networking, real-time communication protocols, and cloud security best practices
Demonstrated ability to lead complex technical projects from design through production
Bonus: experience with voice systems, telephony, or real-time media platforms

Responsibilities

Lead the design and development of scalable, distributed backend microservices in Golang (with some Python for AI-related services)
Own and evolve voice platform integrations with large-scale enterprise communication and contact center systems
Drive initiatives to expand platform capabilities, including bi-directional SIP, WebRTC integrations, multilingual support, advanced transcription, and real-time translation
Build systems that power conversation intelligence for both remote and in-person interactions
Improve observability, reliability, and self-service troubleshooting across the platform
Ensure performance, scalability, and resilience of real-time voice pipelines running in the cloud
Collaborate with cross-functional teams (ML, product, solution architects) to design end-to-end solutions for customer deployments
Provide technical guidance, mentorship, and best practices to other engineers on the team

Skills

Golang

Python

SIP

WebRTC

microservices

distributed systems

backend

real-time systems

multilingual support

transcription

Cresta

AI-powered coaching for sales teams

About Cresta

Cresta focuses on enhancing business outcomes through AI-powered coaching and assistance, particularly for sales teams. Its main product, Cresta for Sales, analyzes all sales conversations to identify performance gaps and provide real-time coaching, helping businesses improve their sales efficiency. This service is available on a subscription basis and is suitable for companies of all sizes across various industries. Cresta also offers a chatbot service that automates repetitive conversations, allowing sales agents to concentrate on more complex tasks. The patented Real-Time Intelligence Engine continuously learns from interactions to highlight effective behaviors, giving businesses a competitive edge. Clients have reported notable improvements, including faster response times and increased sales conversions.

Palo Alto, CaliforniaHeadquarters

2017Year Founded

$268.5MTotal Funding

SERIES_DCompany Stage

Consumer Software, Enterprise Software, AI & Machine LearningIndustries

201-500Employees

Risks

Competition from AI giants like Google and Microsoft threatens Cresta's market share.

Rapid AI advancements may render Cresta's offerings outdated without continuous innovation.

Expansion into Romania and India may face operational challenges and increased costs.

Differentiation

Cresta's Real-Time Intelligence Engine offers unique AI-driven insights for sales improvement.

The company provides AI-powered coaching, enhancing sales team performance with real-time feedback.

Cresta's chatbot service reduces repetitive tasks, allowing agents to focus on complex issues.

Upsides

Cresta's $125M Series D funding boosts product development and market expansion.

Recognition in Forbes AI 50 list enhances Cresta's credibility and market presence.

Human-in-the-loop AI capabilities improve customer service interactions and satisfaction.

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