AWS IoT Back-end Engineer

Ulvior; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Contrato a largo plazo

100% Remoto

Vacaciones y PTOs

2 bonos al año

2 revisiones salariales al año

Clases de inglés

Equipamiento Apple

Plataforma de cursos en linea

Budget para libros

Budget para materiales de trabajo

Job summary

Ulvior busca un/a backend engineer con 4+ años de experiencia en C#/.NET (ASP.NET Core) y PostgreSQL para diseñar e implementar soluciones de integración y APIs REST.

Se valora experiencia en AWS (S3, IAM, Secrets Manager, App Runner/ECS, CloudWatch), IaC, pruebas unitarias e integración, y conocimiento de IoT y MQTT. Puesto 100% remoto desde EE. UU., contrato a largo plazo con bonos y revisiones salariales.

Qualifications

• 4+ years in backend, integration or solutions engineering with C#/.NET
• Solid PostgreSQL experience: schema design, migrations, query tuning
• Hands-on AWS experience in production: S3, IAM, Secrets Manager, App Runner or ECS, CloudWatch
• IaC familiarity (read/change)
• Experience designing and consuming REST APIs, writing unit/integration tests
• Strong written and spoken English

Responsibilities

• Rework and configure AWS IoT Core infrastructure for new hardware/firmware
• Configure and manage MQTT communications between devices and AWS
• Build monitoring capabilities and dashboards for device connectivity, health, and status
• Enable secure remote actions on devices (OTA firmware updates, restarts, remote commands)
• Review and improve AWS IoT provisioning, authentication, certificates and policies
• Migrate AWS workloads and services (App Runner to ECS)
• Support and improve AWS infra, pipelines, monitoring, logging and alerting
• Migrate email infra from AWS to Microsoft Azure with minimal disruption
• Collaborate with the existing team to safely execute infra changes
• Work with IoT device fleets, telemetry, OTA update systems

Skills

C# / .NET (ASP.NET Core)

PostgreSQL

EF Core

AWS (S3, IAM, Secrets Manager, App…er)

IaC

REST APIs

Unit & Integration Tests

English Proficiency

Vendor Calls & Documentation

AWS IoT Core / MQTT

Python (FastAPI)

AWS Lambda / Step Functions

Next.js / React (internal tools)

Security / IAM Least Privilege

Tools

AWS CDK (Python)

Python

FastAPI

boto3

pytest

Next.js

React

Job description

• 4+ years in backend, integration or solutions engineering, with strong C# / .NET (ASP.NET Core).
• Solid PostgreSQL experience: schema design, migrations, query tuning.
• EF Core is a plus.
• Hands-on AWS experience in production: S3, IAM, Secrets Manager, App Runner or ECS, CloudWatch.
• You can read and change IaC.
• Experience designing and consuming REST APIs, and writing unit and integration tests.
• Strong written and spoken English.
• You can run a technical call with a vendor, then document what was agreed.
• A customer-minded, ownership-driven approach: you follow a problem from the first report to the fix.
• Rework and configure the existing AWS IoT Core infrastructure for new hardware/firmware.
• Configure and manage MQTT communication between devices and AWS.
• Build monitoring capabilities and dashboards for device connectivity, health, and status.
• Enable secure remote actions on devices, including:
  • OTA firmware updates
  • Device restarts
  • Remote commands/configuration
• Review and improve AWS IoT device provisioning, authentication, certificates, policies, and security.
• Migrate AWS workloads that are reaching end-of-life or are no longer appropriate, including migrating services from AWS App Runner to ECS.
• Support and improve AWS infrastructure, deployment pipelines, monitoring, logging, and alerting.
• Migrate the current email infrastructure from AWS to Microsoft Azure while ensuring existing AWS applications and automated email workflows continue working without disruption.
• Work with the existing engineering team to understand the current architecture and safely execute infrastructure changes.
• Experience with IoT device fleets, telemetry or OTA update systems (MCUboot, firmware signing, rollback and rollout strategies).
• Python (FastAPI, boto3, pytest) and AWS CDK in Python.
• Experience with AWS Lambda and Step Functions, or ML pipelines.
• Observability: alarms, dashboards, structured logging.
• Next.js / React for small internal tools.
• Security-minded engineering: least-privilege IAM, secrets handling, input validation.
• Contrato a largo plazo.
• 100% Remoto.
• Vacaciones y PTOs.
• Posibilidad de recibir 2 bonos al año.
• 2 revisiones salariales al año.
• Clases de inglés.
• Equipamiento Apple.
• Plataforma de cursos en linea.
• Budget para compra de libros.
• Budget para compra de materiales de trabajo.
• Mucho más..
• Contrato a largo plazo.
• 100% Remoto.
• Vacaciones y PTOs.
• Posibilidad de recibir 2 bonos al año.
• 2 revisiones salariales al año.
• Clases de inglés.
• Equipamiento Apple.
• Plataforma de cursos en linea.
• Budget para compra de libros.
• Budget para compra de materiales de trabajo.
• Mucho más..