Senior Software Engineer – Back-End

VendTech

Senior Software Engineer developing and optimizing .NET Core APIs and cloud infrastructure for Vending Management Software (VMS). Collaborating with cross-functional teams in a hands-on development role.

Posted 4/23/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $130,000 - $150,000 per yearWebsite

Tech Stack

Tools & technologies

AWSDistributed SystemsMicroservices.NETPostgresTerraform

About the role

Key responsibilities & impact

Develop & Optimize APIs: Design, build, and maintain .NET Core (C#) APIs and microservices with a focus on scalability, performance, and reliability.
Event-Driven Architecture: Implement AWS SQS and Lambda functions for asynchronous workflows and real-time processing.
Database Development & Performance Tuning: Design efficient database schemas and optimize queries for PostgreSQL. Implement best practices for indexing, partitioning, and transaction handling.
Scalability & Reliability: Develop solutions that scale horizontally within AWS ECS. Optimize performance through caching strategies, API response tuning, and concurrency management.
Security & Best Practices: Implement authentication and authorization using OAuth, JWT, and IAM policies. Follow security best practices for data encryption, API protection, and access control.
Testing & Code Quality: Write unit, integration, and performance tests to ensure system stability. Participate in code reviews and best practice discussions to maintain high engineering standards.
CI/CD & Deployment: Work with GitHub Actions, Terraform, and AWS ECS to deploy and manage APIs in a containerized environment. Ensure robust monitoring and logging through AWS CloudWatch, distributed tracing, and log aggregation tools.
Collaboration & Problem-Solving: Work cross-functionally with front-end, DevOps, and product teams to align technical solutions with business needs. Debug and resolve complex back-end issues in a distributed environment.

Requirements

What you’ll need

8+ years of hands-on back-end development experience, with expertise in .NET Core (C#).
Strong understanding of microservices, API design, and distributed systems.
Proven experience with PostgreSQL, including query optimization and schema design.
Hands-on experience with AWS services, particularly ECS, SQS, Lambda, and IAM.
Experience developing event-driven applications using message queues like AWS SQS.
Proficiency in RESTful API development, authentication (OAuth, JWT), and security best practices.
Experience with CI/CD pipelines, Git, and infrastructure automation.
Ability to interpret technical documentation and work with industry protocols (e.g., NAMA VDI, DEX Protocol, or similar).

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account VendTech Website LinkedIn All Job Openings 51 - 200 employees 🔧 Hardware 🛒 Retail 🤝 B2B Hardware
Retail
B2B VendTech is a provider of end-to-end unattended retail solutions, delivering smart vending machines, AI-enabled coolers, kiosks, payment systems, micro-market fixtures, and remote vending management to operators and entrepreneurs. The company combines hardware, integrated payments, and remote-monitoring software to help scale, launch, and operate profitable self-service retail businesses, and it also supports a consumer-facing brand, Naturals2Go. VendTech positions itself as an operator-led engineering and innovation partner focused on convenience retail, uptime, and flexible open integrations. Senior Software Engineer – Back-End Job not on LinkedIn 🔥 0 minutes ago 🇺🇸 United States – Remote 💵 $130k - $150k / year ⏰ Full Time 🟠 Senior 🔙 Backend Engineer AWS Distributed Systems Microservices Postgres Terraform .NET Apply Now Find Hiring Managers Customize resume for this job Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Develop & Optimize APIs: Design, build, and maintain .NET Core (C#) APIs and microservices with a focus on scalability, performance, and reliability.
Event-Driven Architecture: Implement AWS SQS and Lambda functions for asynchronous workflows and real-time processing.
Database Development & Performance Tuning: Design efficient database schemas and optimize queries for PostgreSQL. Implement best practices for indexing, partitioning, and transaction handling.
Scalability & Reliability: Develop solutions that scale horizontally within AWS ECS. Optimize performance through caching strategies, API response tuning, and concurrency management.
Security & Best Practices: Implement authentication and authorization using OAuth, JWT, and IAM policies. Follow security best practices for data encryption, API protection, and access control.
Testing & Code Quality: Write unit, integration, and performance tests to ensure system stability. Participate in code reviews and best practice discussions to maintain high engineering standards.
CI/CD & Deployment: Work with GitHub Actions, Terraform, and AWS ECS to deploy and manage APIs in a containerized environment. Ensure robust monitoring and logging through AWS CloudWatch, distributed tracing, and log aggregation tools.
Collaboration & Problem-Solving: Work cross-functionally with front-end, DevOps, and product teams to align technical solutions with business needs. Debug and resolve complex back-end issues in a distributed environment. 🎯 Requirements
8+ years of hands-on back-end development experience, with expertise in .NET Core (C#).
Strong understanding of microservices, API design, and distributed systems.
Proven experience with PostgreSQL, including query optimization and schema design.
Hands-on experience with AWS services, particularly ECS, SQS, Lambda, and IAM.
Experience developing event-driven applications using message queues like AWS SQS.
Proficiency in RESTful API development, authentication (OAuth, JWT), and security best practices.
Experience with CI/CD pipelines, Git, and infrastructure automation.
Ability to interpret technical documentation and work with industry protocols (e.g., NAMA VDI, DEX Protocol, or similar). Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score Similar Jobs Senior Backend Engineer – Personalization 🔥 13 minutes ago Spotify 5001 - 10000 📱 Media 👥 B2C 🛍️ eCommerce Website LinkedIn All Job Openings Backend Engineer in Spotify's Personalization team enhancing music recommendation systems. Collaborating across functions to build intuitive user experiences for millions of listeners. 🇺🇸 United States – Remote 💵 $160.1k - $228.7k / year ⏰ Full Time 🟠 Senior 🔙 Backend Engineer 🦅 H1B Visa Sponsor Apache AWS Cloud Distributed Systems Google Cloud Platform Spark Tech Lead – Node.js 🔥 1 hour ago Atomic - Remote Jobs 1 - 10 🎯 Recruiter 🏪 Marketplace Website LinkedIn All Job Openings Full-Stack Software Engineer at a US startup simplifying benefits access for frontline workers. Designing and implementing scalable core backend systems and collaborating with cross-functional teams. 🇺🇸 United States – Remote 💵 $70k - $100k / year ⏰ Full Time 🟠 Senior 🔙 Backend Engineer AWS Cloud JavaScript Node.js Lead .NET Architect – Technology & AI Labs 🔥 2 hours ago Embrace Software Inc 201 - 500 💸 Finance 📚 Education Website LinkedIn All Job Openings Lead Architect developing and overseeing Industrial Group's mission-critical software platforms. Collaborate closely with Venture AI Labs, integrating applied AI into engineering practices and architecture. 🇺🇸 United States – Remote ⏰ Full Time 🟠 Senior 🔙 Backend Engineer ASP.NET AWS Azure Cloud Distributed Systems Entity Framework Kafka Microservices MongoDB MS SQL Server NoSQL RabbitMQ Redis SQL Vault .NET Senior Manager, Engineering – Infrastructure/Backend 🔥 5 hours ago Veritone 501 - 1000 🤖 Artificial Intelligence 📱 Media Website LinkedIn All Job Openings Sr. Manager leading engineering for AI infrastructure at Veritone. Overseeing software delivery and team mentorship while promoting an innovative engineering culture. 🇺🇸 United States – Remote 💵 $210k - $220k / year ⏰ Full Time 🟠 Senior 🔙 Backend Engineer 🦅 H1B Visa Sponsor Mid-Level Drupal Engineer, AI-Enabled Platform Support 🔥 9 hours ago ServBeyond Solutions LLC 11 - 50 🏛️ Government ⚕️ Healthcare Insurance 🚗 Transport Website LinkedIn All Job Openings Mid-Level Drupal Engineer developing AI-enabled platforms for government clients at ServBeyond Solutions. Design, develop, and support enterprise Drupal applications as part of a dynamic team. 🇺🇸 United States – Remote 💵 $120k - $130k / year ⏰ Full Time 🟡 Mid-level 🟠 Senior 🔙 Backend Engineer AWS Cloud Drupal JavaScript MySQL PHP React SDLC Vue.js View More Backend Engineer Jobs 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

.NET CoreC#API designmicroservicesPostgreSQLAWS ECSAWS SQSAWS LambdaOAuthJWT

Soft Skills

collaborationproblem-solving