Senior Software Engineer, Backend (Voice Platform) Job at Cresta (Toronto)

Senior Software Engineer, Backend (Voice Platform)

At Cresta, the Voice Platform team is on a mission to transform real-time voice ...

Location

Romania , Bucharest

Salary:

Not provided

Cresta

Expiration Date

Until further notice

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

Job Responsibility

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

What we offer

Compensation for this position includes a base salary, equity, and a variety of benefits

New

Senior .Net Backend Engineer

The Cloud Engineering team at Seismic is responsible for infrastructure deployed...

Location

India , Hyderabad

Salary:

Not provided

Seismic

Expiration Date

Until further notice

Requirements

Comfortable asking questions and respectfully voicing your opinion in group settings
Comfortable providing and discussing a recommendation after evaluating multiple solutions
Experienced working in a software development environment with a strong focus on backend engineering, API design, and building internal developer platforms
Production-level expertise in object-oriented or scripting languages, with a strong preference for Python or C#
Familiarity with configuration management and infrastructure-as-code tools (such as Ansible or Terraform) to bridge the gap between software and operations
Have a strong knowledge of Linux, Kubernetes, networking, and infrastructure fundamentals in a multi-region microservice architecture environment
Comfortable collaborating within a global team
Comfortable using AI-assisted development tools such as GitHub CoPilot (e.g., code generation, infrastructure-as-code suggestions, test generation, issue troubleshooting)
Able to critically evaluate AI-generated outputs, identify failure modes, and apply sound engineering judgment before promoting changes to production
Curious and pragmatic about applying AI to operational problems (reliability, observability, incident response, cost optimization, developer experience) rather than viewing AI as a novelty

Job Responsibility

Drive development and maintenance of our .NET tenant management tooling and automation
Design and build robust software solutions and APIs to eliminate manual work related to tenant creation, deletion, renaming, migration, and refresh processes
Contribute to best practices and build out tools and frameworks to increase productivity of our Engineering group
Work closely with application development teams and incorporate their feedback to improve developer experience and reduce toil
Present plans and proposals to Engineering Leadership
Lead projects as we execute objectives shared across our Production Engineering team
Provide guidance to less senior engineers
Participate in a 12 hours on, 12 hours off on-call rotation within the Production Engineering team
Leverage AI-assisted tools to accelerate software development, testing, and documentation while ensuring reliability, security, and compliance standards are met
Apply AI techniques to reduce operational toil, such as automated analysis of automation failures

Fulltime

Senior Software Engineer - Customer Experience Platform

As a Software Engineer on the CX Platform team, you will design, build, and evol...

Location

Ireland

Salary:

Not provided

Hopper

Expiration Date

Until further notice

Requirements

3+ years of experience in software engineering, ideally building large-scale distributed systems or customer-facing applications
A strong technical background with modern frontend and backend development, distributed systems, APIs, and cloud infrastructure
Experience designing, building, and maintaining RESTful APIs, microservices, or event-driven systems
Experience with databases (PostgreSQL, MySQL, NoSQL) and cloud platforms (AWS, GCP, or similar)
Ability to break down complex problems, make pragmatic tradeoffs, and ship iteratively
Strong communication skills and comfort collaborating with cross-functional teams

Job Responsibility

Design, build, and improve the backend and/or full-stack systems that power HTS Assist, internal agent tools, and customer self-serve flows
Develop scalable APIs, microservices, and orchestration logic that support complex post-booking journeys across AI, chat, voice, and web
Partner with product, design, AI, and operations teams to deliver features that streamline customer experiences and enhance agent efficiency
Integrate with external systems, such as telephony, CRM, identity, or booking platforms, to support both internal use cases and partner deployments
Own features end-to-end, from technical design through implementation, testing, deployment, monitoring, and iteration
Contribute to architectural decisions, code reviews, reliability improvements, and ongoing enhancements to engineering best practices
Analyze system performance and user behavior to identify opportunities for automation, optimization, and cost reduction

Fulltime

Senior Software Engineer - Customer Experience Platform

As a Software Engineer on the CX Platform team, you will design, build, and evol...

Location

Canada , Toronto; Vancouver

Salary:

Not provided

Hopper

Expiration Date

Until further notice

Requirements

3+ years of experience in software engineering, ideally building large-scale distributed systems or customer-facing applications
A strong technical background with modern frontend and backend development, distributed systems, APIs, and cloud infrastructure
Experience designing, building, and maintaining RESTful APIs, microservices, or event-driven systems
Experience with databases (PostgreSQL, MySQL, NoSQL) and cloud platforms (AWS, GCP, or similar)
Ability to break down complex problems, make pragmatic tradeoffs, and ship iteratively
Strong communication skills and comfort collaborating with cross-functional teams

Job Responsibility

Design, build, and improve the backend and/or full-stack systems that power HTS Assist, internal agent tools, and customer self-serve flows
Develop scalable APIs, microservices, and orchestration logic that support complex post-booking journeys across AI, chat, voice, and web
Partner with product, design, AI, and operations teams to deliver features that streamline customer experiences and enhance agent efficiency
Integrate with external systems, such as telephony, CRM, identity, or booking platforms, to support both internal use cases and partner deployments
Own features end-to-end, from technical design through implementation, testing, deployment, monitoring, and iteration
Contribute to architectural decisions, code reviews, reliability improvements, and ongoing enhancements to engineering best practices
Analyze system performance and user behavior to identify opportunities for automation, optimization, and cost reduction

Fulltime

Senior Software Engineer - Customer Experience Platform

As a Software Engineer on the CX Platform team, you will design, build, and evol...

Location

Salary:

Not provided

Hopper

Expiration Date

Until further notice

Requirements

3+ years of experience in software engineering, ideally building large-scale distributed systems or customer-facing applications
A strong technical background with modern frontend and backend development, distributed systems, APIs, and cloud infrastructure
Experience designing, building, and maintaining RESTful APIs, microservices, or event-driven systems
Experience with databases (PostgreSQL, MySQL, NoSQL) and cloud platforms (AWS, GCP, or similar)
Ability to break down complex problems, make pragmatic tradeoffs, and ship iteratively
Strong communication skills and comfort collaborating with cross-functional teams

Job Responsibility

Design, build, and improve the backend and/or full-stack systems that power HTS Assist, internal agent tools, and customer self-serve flows
Develop scalable APIs, microservices, and orchestration logic that support complex post-booking journeys across AI, chat, voice, and web
Partner with product, design, AI, and operations teams to deliver features that streamline customer experiences and enhance agent efficiency
Integrate with external systems, such as telephony, CRM, identity, or booking platforms, to support both internal use cases and partner deployments
Own features end-to-end, from technical design through implementation, testing, deployment, monitoring, and iteration
Contribute to architectural decisions, code reviews, reliability improvements, and ongoing enhancements to engineering best practices
Analyze system performance and user behavior to identify opportunities for automation, optimization, and cost reduction

Fulltime

Senior Software Engineer - Customer Experience Platform

As a Software Engineer on the CX Platform team, you will design, build, and evol...

Location

United States , Chicago; New York; California

Salary:

Not provided

Hopper

Expiration Date

Until further notice

Requirements

3+ years of experience in software engineering, ideally building large-scale distributed systems or customer-facing applications
A strong technical background with modern frontend and backend development, distributed systems, APIs, and cloud infrastructure
Experience designing, building, and maintaining RESTful APIs, microservices, or event-driven systems
Experience with databases (PostgreSQL, MySQL, NoSQL) and cloud platforms (AWS, GCP, or similar)
Ability to break down complex problems, make pragmatic tradeoffs, and ship iteratively
Strong communication skills and comfort collaborating with cross-functional teams

Job Responsibility

Design, build, and improve the backend and/or full-stack systems that power HTS Assist, internal agent tools, and customer self-serve flows
Develop scalable APIs, microservices, and orchestration logic that support complex post-booking journeys across AI, chat, voice, and web
Partner with product, design, AI, and operations teams to deliver features that streamline customer experiences and enhance agent efficiency
Integrate with external systems, such as telephony, CRM, identity, or booking platforms, to support both internal use cases and partner deployments
Own features end-to-end, from technical design through implementation, testing, deployment, monitoring, and iteration
Contribute to architectural decisions, code reviews, reliability improvements, and ongoing enhancements to engineering best practices
Analyze system performance and user behavior to identify opportunities for automation, optimization, and cost reduction

Fulltime

Senior Software Engineer

A mission-driven healthcare technology organization focused on improving health ...

Location

United States , New York City; San Francisco

Salary:

70.00 - 90.00 USD / Hour

Signify Technology

Expiration Date

Until further notice

Requirements

Minimum 5 years of hands-on software engineering experience, with strong proficiency in Ruby on Rails and JavaScript
Minimum 5 years of experience building and scaling backend systems, APIs, and services
Strong understanding of software development lifecycle, design patterns, object-oriented programming, and engineering best practices
Advanced SQL proficiency with the ability to analyze large datasets to troubleshoot issues and inform technical decisions
Experience designing and supporting high-throughput backend systems and distributed architectures
Experience working in environments where automated testing is a core development practice
Demonstrated ability to independently own complex features end-to-end, from technical design through production support
Strong collaboration skills across technical and non-technical stakeholders
Excellent written and verbal communication skills in a fully remote environment
Growth-oriented mindset with strong attention to system reliability, scalability, and engineering quality

Job Responsibility

Design, build, and maintain scalable backend services using Ruby on Rails, JavaScript, and relational databases, supporting high-volume messaging workflows, APIs, and system integrations
Develop and optimize messaging pipelines that support SMS, voice, and automated communication workflows, ensuring reliable delivery, consent management, scheduling, and orchestration of communications
Build and maintain secure API-to-API integrations that connect messaging platforms with external systems and services, ensuring reliable data exchange and workflow automation
Collaborate with engineering teams to design and evolve scalable messaging infrastructure, contributing to architectural decisions related to delivery optimization, system performance, and event-driven communication workflows
Leverage advanced SQL and analytical thinking to investigate system behavior, troubleshoot production issues, analyze delivery performance, and inform technical decisions with data
Partner closely with Product, Customer Success, Data, and Engineering teams to gather requirements, contribute to technical documentation, clarify workflows, and design messaging features that support business and user needs
Provide technical mentorship through code reviews, design discussions, and collaborative development, helping guide engineering best practices and supporting the growth of other engineers on the team
Write and maintain automated tests alongside production code, ensuring backend services are secure, reliable, and production-ready
Create clear technical documentation and internal enablement resources that help teams monitor, troubleshoot, and support messaging systems in production
Participate in on-call rotations and incident response, supporting messaging infrastructure to maintain high availability and performance

Senior Software Engineer - Product

Frontier Foundry (F²) is IDC’s bold new innovation engine — a design-led, full-s...

Location

India , Hyderabad

Salary:

Not provided

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science or related technical field AND 7+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
Hands-on experience with Nuance voice technologies or similar platforms (e.g., Azure Speech, Dialogflow, Alexa Skills Kit)
Deep understanding of Voice Access systems, accessibility APIs, and assistive technologies
Strong proficiency in full-stack development, especially client-side application engineering and user-facing experiences
Experience with GitHub Copilot, Copilot Studio, AI Foundry, or equivalent vibe coding/generative AI tools
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter

Job Responsibility

Design, build, and deliver high-quality software components aligned to F² charters: interaction models (inking, stylus, display tech), multimodal innovation (sensor fusion, voice/touch interfaces), or AI agents (context-aware, task-oriented)
Integrate and optimize Nuance Conversational AI technologies (e.g., speech-to-text, text-to-speech, NLU) into multimodal experiences
Enhance Voice Access capabilities across platforms, ensuring accessibility, responsiveness, and seamless user interaction
Work across the stack — from UI to backend — with a bias for impact and iteration
Embrace “vibe coding” using AI-assisted tools like GitHub Copilot, Copilot Studio, AI Foundry, and other generative AI tools to reduce boilerplate and drive intelligent test automation
Collaborate with product, design, and partner teams to shape backlog priorities and deliver intuitive, high-impact experiences
Navigate evolving priorities with ingenuity, turning loosely defined ideas into tangible software outcomes
Contribute to architecture discussions, code reviews, and prototyping efforts
Foster a culture of agility, experimentation, and outcome-driven development

Fulltime

Senior Software Engineer, Backend (Voice Platform)

Cresta

Location:
Canada , Toronto

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
January 16, 2026

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