Senior Backend Software Engineer (m/f/d), Rust – AI-first E-commerce Tech, Full-time

Adstrong; Polska; Remote; PLN 180,000 - 300,000; Full time

Job summary

Adstrong is a profitable, self-funded company building data-heavy web platforms. We offer fully remote work from anywhere in the EU with flexible hours and no weekends. We seek an engineer who wants stability and long-term growth.

You will own projects from idea to delivery, work with AI-assisted coding agents, and shape architecture in Rust with some Python. You’ll collaborate with business colleagues to turn goals into working software while maintaining fast, reliable systems.

Qualifications

• Bachelor’s degree in computer science or a related field.
• Proficient in Rust and willing to make it primary language.
• Experience with C/C++ as strong alternative.
• Hands-on with event-driven architectures and data-intensive backends.
• Strong architectural awareness and design skills.
• Business-fluent English (C1 or higher).

Responsibilities

• Build AI-first backend systems and guide coding agents.
• Turn business goals into scalable software in collaboration with teams.
• Design and own event-driven architectures for high-throughput data.
• Take ownership of existing applications and deliver new solutions.
• Review AI outputs and maintain code quality through reviews.

Skills

Rust

C/C++

Architecture

AI collaboration

Event-driven systems

English

Backend development

E-commerce domain knowledge

Education

Bachelor's degree in Computer Science or related field

Tools

Kafka

AWS SQS/SNS

Next.js

Python

Job description

We’re a profitable, self-funded company that keeps growing, with a stable and supportive team. We’re looking for an engineer who wants to stay with us for the long run.

You’ll work towards clear goals, use AI to work smarter, and own your projects from the first idea to delivery, all fully remote.

Why adstrong

100% remote: work from anywhere in the EU, with flexible hours and no weekend or night work.

No process chaos: documentation and procedures are well-structured and digital.

No politics: we encourage proactive decisions and make ours within 24 hours.

Stable and growing: a fully self-funded, fast-growing company with no external investors.

Small, skilled team: a hands-on tech team of around 6 people.

Great working culture: supportive colleagues who help each other and share knowledge openly.

AI-first: coding agents are how we build, and your judgement is what matters.

Attractive compensation: plus all the equipment you need.

Missing anything? Mention it in your application, and we’ll see if we can make it happen.

Your Role

Build AI-first: plan with AI, steer coding agents and review their output critically.

Turn goals into solutions: work directly with colleagues on the business side to gather requirements, agree on the approach and deliver working software.

Make architecture and data-model decisions that keep our systems fast and reliable as we scale

Take ownership of existing applications and build new solutions for our affiliate business.

Design and develop event-driven backend systems that handle large volumes of product and campaign data, mostly in Rust and partly in Python.

Own your topics end to end, keeping the team and stakeholders informed along the way.

Your Profile

Experience contributing to a strong engineering culture, e.g. through code reviews, knowledge sharing, or improving team tools and ways of working.

Daily hands-on work with coding agents: you plan with AI, delegate the implementation and know how to review what comes back, including more complex workflows like one model writing code while another reviews it.

Strong architectural awareness: you know which components and infrastructure to use for which problem, and how to structure what you build.

Rust experience, or curiosity about it and readiness to make it your main language, as most of our backend is written in it. C or C++ experience is a strong alternative.

Experience solving problems close to ours, ideally in e-commerce, affiliate marketing, Google Shopping, Google Ads or other data-heavy web platforms. Our business team will help you build the domain knowledge.

Experience with event-driven systems (e.g. Kafka, AWS SQS/SNS or similar)

A solid grasp of the full engineering process: requirements, design, trade-offs, testing and maintainability

Mid- or senior-level experience. We care more about how you think and work than about years on paper. Our business team will help you build the domain knowledge.

A Bachelor’s degree in computer science or a related field.

Business-fluent English (C1 or higher).

Our stack: Rust (plus some Python) on the backend, and TypeScript / Next.js on the frontend. The frontend is owned by our frontend engineers, so experience there is a plus but not required.

Your Mindset

Clear, proactive communication: you’re comfortable talking with business colleagues, ask the right questions early, share progress without being asked and explain trade-offs in plain language

Self-organization: you plan your work, set priorities and follow through

Curiosity: you enjoy new topics, including the business side, and keep learning as tools and AI evolve

Ownership: you care about the outcome, not just the code, and drive your topics forward

Team spirit: we improve as a team, so honest feedback matters to us, and so do your ideas for improving our culture, tools and ways of working

If you match most of these points and want to help shape the technology behind one of Europe’s leading CSS providers, we’d love to hear from you. There’s no classic coding test in our process. Instead, we’ll talk through a realistic goal together and see how you approach it with AI.