The Role: The Senior Full-Stack Developer owns delivery of roadmap features set by our executives. Working hands-on under the guidance of the technical cofounder and alongside a small team of senior engineers, this person will architect, build, and operate cloud-native services without day-to-day micromanagement.
Key Responsibilities:
Design, develop, and maintain scalable microservices and web applications using C#/. NET Core
Architect, deploy, and optimize workloads on AWS (EC2, ECS Fargate, Lambda, RDS, Dynamo DB, S3, Cloud Formation or AWS CDK)
Drive all phases of the software lifecycle: technical design, implementation, testing, monitoring, and continuous improvement
Participate in peer code reviews and help uphold high engineering standards
Identify and implement platform improvements that enhance performance, reliability, security, and developer experience
Collaborate with Product, Support, and QA to release customer-facing features and resolve production issues promptly
Required Qualifications:
8+ years of professional software development, including 5+ years with
C#/. NET Core
or later
Front End:
Java Script, Typescript, HTML, CSS
are foundational. React
knowledge would be a bonus but not required.
Demonstrated success building and operating full-stack applications on
AWS




Strong knowledge of relational and
No SQL
data modeling
Proven ability to work autonomously, take accountability for outcomes, and deliver high-quality solutions
Excellent written and verbal communication skills with a bias for action and clarity
Bonus Qualifications
(Vo IP & Real-Time Communications):
Hands-on experience with one or more of the following: Asterisk or Free SWITCH
SIP, RTP, and media negotiation
Kamailio or Open SIPS
Web RTC data or media channels
Experience designing, scaling, and troubleshooting Vo IP workloads on AWS, including NAT traversal and general media routing
Familiarity with audio codecs, Qo S, and diagnostic tools such as sngrep and Wireshark
Working Practices & Culture:
Time-zone overlap – minimum of three overlapping hours with teammates in Europe or US Eastern time for real-time collaboration
Autonomy with guidance – goals are set with the technical cofounder and CEO; the developer chooses the best execution approach
Continuous delivery – small, frequent deployments supported by automated tests and infrastructure as code
Ownership mindset – every engineer can improve the product, codebase, and processes

📌 Senior full-stack developer (javascript, c# + aws) (Zapopan)
🏢 Nir-yu
📍 Zapopan