Lead Backend Engineer (.NET & AWS)

We're committed to developing cutting-edge solutions that push the boundaries of what's possible, offering you the chance to work on exciting projects in an environment that values innovation, fosters continuous learning, and promotes excellence.

About the Position

Join a major re-platforming initiative for an iconic global brand whose products and digital experiences are recognized and loved worldwide.

We are building a new, self-sufficient engineering team to modernize a high-traffic digital marketplace. As Lead Backend Engineer, you will guide a three-person team while remaining closely involved in architecture, design, and development.

Responsibilities

• Lead a self-sufficient team consisting of a Backend Lead, Backend Engineer, and Backend/Full-Stack Engineer
• Provide technical direction and ensure sound engineering practices across the team
• Take ownership of delivery and help the team turn technical work into tangible product value
• Work closely with the Product Manager
• Contribute hands-on to the design, development, and maintenance of robust backend services
• Drive refinement, estimation, planning, and technical decision-making
• Design loosely coupled, event-driven systems that can evolve independently
• Support the gradual migration of legacy functionality to a modern cloud-native architecture
• Promote effective collaboration across teams and locations
• Document architecture and key technical decisions using the C4 model

Requirements

• Minimum 8 years of professional experience
• Previous experience leading or technically guiding an engineering team
• Strong hands-on development experience with C# 12 or newer
• Solid knowledge of .NET Core services, libraries, and Minimal APIs
• Solid experience with AWS including Lambda, API Gateway, EventBridge, SQS/SNS, DynamoDB, IAM, and CloudWatch
• Infrastructure as Code experience using AWS CDK or Terraform
• Strong understanding of application architecture and engineering principles, including SOLID, Clean Architecture, and Domain-Driven Design
• Experience designing loosely coupled systems and event-driven architectures
• Knowledge of OAuth 2.0 and OpenID Connect
• Experience working with relational or non-relational databases
• Confident use of GitHub and modern software delivery practices
• Strong communication, collaboration, and ownership skills

Nice to Have

• Experience with React
• Experience with Tax, Tax calculation, Financial or Payment systems
• Experience with integration to external providers

You’ll be joining a senior-only team where your ideas matter, your expertise is trusted, and your work has room to grow. Ready to take the next step in your career?

We Offer

• Relocation package
• Competitive compensation packages
• Performance bonuses
• Flexible working hours
• Job rotation
• Learning through Arnia Academy
• Attractive projects
• Trainings
• International work experience
• Referral program
• Medical benefits

About the Company

At Arnia, we are a diverse and passionate team of software development engineers, quality assurance engineers, business analysts, system administrators, and managers, united by our shared dedication to creating high-quality software solutions and delivering exceptional services to our valued customers and partners.

We believe in customer satisfaction as being the single most important goal we want to achieve in everything we do. But we also believe that we can reach this goal while having fun at work, making friends, and enjoying working together. We have game evenings, nights out, and team building events to help us know each other better and spend quality time together. Also, we have a flat organization, with no unnecessary hierarchies and where you reach the management easily.

In Arnia you will meet very skilled software engineers with rich academic backgrounds, with passion for innovation and continuous education, self-driven and oriented toward results. At the same time, they are people with a high sense of humor, fun, and informal, that value friendship, trust, and a nice working environment.

Excellence is achieved step by step, it is a journey we always take together as a team and as a modern organization.

We recognize the value of each individual, we value diversity, and we support your development career – your success is our success! We take pride in helping our people to develop their career, continuously improving their skills and their technical knowledge, and to fully reach their own development goals.

People are different, they are coming from various cultures and are motivated by different things:

• The financial interests
• The career development plan
• The technologies and the projects
• The work-life balance
• The opportunities to travel abroad

Why Arnia?

We recognize people’s diversity and we try to meet everyone’s goals.

• Game Evenings
• Nights Out
• Team Buildings
• Trainings

Arnia encourages you to pursue your own interests, projects, and ideas – passion can turn small things into big things – we want to be part of your own individual success. Let us know your ideas and your personal interests, and we will find a way to support you.

Relocation Package

Competitive Compensation Packages

Flexible Working Hours

Job Rotation

Performance Bonuses

Medical Benefits

Not the least, we have class A offices, located in Piata Victoriei – Europa House building, next to the metro stations and to other transportation means. It is very easy to get to work, and you will enjoy the quality and the lifestyle of our offices.

Attractive Projects

International Work Experience

Referral Program

Learning Through Arnia Academy

And if you like all these, why don’t you join us?

Recruitment Process

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Thank you for your interest in our internship program

We are sorry to inform you that we do not have any internships available at the moment.

Please check back later for updates on our future opportunities.

Are you looking for a job and it doesn’t seem to be on our job openings list?

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Arnia Software has consolidated its position as a preferred IT outsourcing company in Romania and Eastern Europe, due to its excellent timely delivery and amazing development team.

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Our Services Include:

Nearshore with Arnia Software

Software Development Outsourcing

Offshore Software Development

Engagement Models

Bespoke Software Development

Staff Augmentation

Digital Transformation

Mobile App Development

Banking Software Solutions

Quality Assurance

Project Management

Open Source

Nearshore Development Centre

Offshore Development Centre