Pack is the people development platform for companies building the next generation of talent. We help you transform performers into A-Players — not with generic training, but with precision coaching, strategic mentorship, and a system that scales.

We combine:

An international network of elite mentors and operators

A platform that turns growth into a process, not a guess

A proprietary methodology rooted in behavioral science and execution

WHY WE NEED YOUR HELP

We are looking for a mid-level Backend & Infrastructure Engineer to help design, build, and maintain scalable systems that support high-performance applications. This role focuses on backend architecture, system reliability, and infrastructure automation, making it ideal for an engineer with a strong foundation in backend technologies and a passion for building robust, efficient systems.

OUR VALUES:

People-Focused

Relentless Growth

Straightforward Execution

Founder Mindset

MAMBA MENTALITY:

"Hard work outweighs talent.

Mamba mentality is about 4 a.m. workouts, doing more than the next guy, and then trusting in the work you’ve put in when it’s time to perform. Without studying, preparation, and practice, you’re leaving the outcome to fate. I don’t do fate."

Kobe Bryant

About the role

Primary Responsibilities

Backend Development

Design and build robust, scalable APIs using Node.js, Express.js, and PostgreSQL (Kysely or similar).

Design and optimize database systems with a deep understanding of indexing, query performance, and multi-tenant data models.

Ensure clean, modular, and testable code in backend systems.

Infrastructure & Deployment

Manage and scale cloud infrastructure on AWS (EC2, ECS, S3) using SST or AWS CDK, Docker, and Nix.

Build and maintain CI/CD pipelines using GitHub Actions for automated testing and deployment.

Ensure high availability, system reliability, and seamless feature rollouts.

System Architecture

Make key decisions on backend and infrastructure architecture with a focus on performance, scalability, and maintainability.

Design secure and fault-tolerant systems aligned with product requirements.

Secondary Responsibilities

Queue & Worker Systems

Design asynchronous workflows and background processing using tools like pgAdmin, BullMQ, RabbitMQ, or custom worker architectures.

Monitor and optimize queue performance and job reliability.

Monitoring, Logging, and Debugging

Proactively monitor system health using metrics and alerting.

Implement robust logging and error-handling strategies for system observability.

Security & Compliance

Follow OWASP Secure Coding Practices, implement secure authentication/authorization flows, and assess vulnerabilities regularly.

AI Integration (Nice to Have)

Integrate AI/LLM-powered workflows for backend automation and tooling.

Experience with RAG pipelines, agentic systems, or LLM APIs is a bonus.

We know you may not have all these characteristics but, if you think you are the right person, we would love to meet you.

Requirements

Technical Skills:

English level: B2, we are an international team and all the meeting and communication are in English

Backend: Node.js, Express.js, PostgreSQL (Kysely or similar),

API Development: RESTful APIs, WebSockets.

Cloud & DevOps: AWS (EC2, ECS, S3), Docker, Nix, GitHub Actions.

Testing & Security: Vitest, Playwirght, OWASP Secure Coding practices.

Experience with queue managers (e.g., BullMQ, RabbitMQ) and tools like pgAdmin.

Infrastructure: AWS (EC2, ECS, S3), SST, Docker, Nix, GitHub Actions.

Deployment: CI/CD, monitoring, error handling, and debugging best practices.

AI Integration: Familiarity with AI/ML frameworks, OpenAI, LangChain (optional but valuable).

Performance Optimization: Expertise in database query optimization, caching strategies, and multi-tenant architectures.

Nice to Haves:

You like putting yourself in the game

You like learning by doing and making mistakes

You like working in a dynamic and flexible environment

Soft Skills:

Strong problem-solving and debugging skills.

Experience working in cross-functional teams.

Ability to mentor junior developers and improve team coding practices.

Experience Required:

4+ years of experience as a Infrastructure or Backend Engineer in a fast-paced, product-driven environment.

Previous experience working with scalable and distributed applications.

Hands-on experience with performance optimization and system architecture.

Strong grasp of cloud infrastructure, deployment pipelines, and monitoring solutions.

We know you may not have all these characteristics but, if you think you are the right person, we would love to meet you.

Our Pack for you

Contract

Working hours: full time

Contract term: fixed employment contract for 6 months, then a permanent contract.

We have designed a flexible compensation structure for our developers, giving you the choice between two options:

Option A – Performance-Based Package

Base salary aligned with role and seniority.

Bonus up to 50% of your salary based on Company, Team, and Individual performance.

There is no cap on bonuses — exceptional performance can lead to higher earnings, linked directly to over-performance.

Quarterly evaluations determine the performance multiplier (based on Deliverables, Skills, and Culture).

Option B – Fixed-Only Package

Base salary 15-20% higher than Option A

No participation in the performance-based bonus system.

Annual review: you can switch back to Option A during salary reviews if you wish.

Note: The fixed salary in Option B is designed to offer more financial stability for those who prefer predictability, while Option A offers higher upside potential linked to performance.

Benefits

STOCK-OPTION PLAN: we have allocated employees a specific number of shares in the company.

UNLIMITED MENTORING, COACHING & THERAPY SESSIONS: You will have the opportunity to follow a mentoring or a coaching path directly on our platform. Moreover, you will also have access to therapy sessions, thanks to our partner Serenis.

WELFARE PLATFORM & MEAL VOUCHERS: every month you will receive an amount on the Edenred Application and you will decide how to spend it.

If you want to discover more click here

"We are an equal opportunity employer and welcome applications from all qualified individuals, regardless of age, gender, ethnicity, sexual orientation, disability, or any other protected characteristic.”

APPLY NOW

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