Senior Software Engineer (Full-Stack)

Alcor; Warszawa; Remote; PLN 250,000 - 350,000; Full time

Benefits offered by this job

Remote-first

Growth opportunities

Claude Code tooling

Energetic culture

Job summary

Smartling is seeking a Senior Software Engineer to work remotely and build highly scalable services for our translation platform. You will own features end to end, across Java, Node, and React, delivering code via AI agents and ensuring quality through automated tests.

Join a remote-first team that values AI-first development, TDD, and a culture of continuous deployment. A BS+ in CS and strong English are required to collaborate with global colleagues.

Qualifications

• Senior engineering experience with full-stack capabilities.
• Proficient in at least one backend language (Java, Kotlin or Node).
• Strong knowledge of software architecture including SOA.
• Experience with events, message buses and asynchronous processing.
• Relational database design, indexing and performance basics.
• CS fundamentals: algorithms, data structures, runtime basics.
• Hands-on with AI coding agents and ability to review results.
• Ability to design, test and explain changes, including agent-produced code.
• Broad knowledge across the stack and clear English communication.
• BS+ degree in CS or equivalent; remote-work readiness.

Responsibilities

• Own features end to end, from clarifying the problem to releasing in production.
• Work across repositories and technologies (Java, Node, React) delivering code via AI agents.
• Ensure quality of all shipped work, including AI-generated code.
• Collaborate with product managers and client-facing colleagues to clarify scope.
• Add automated tests and pass them through the delivery pipeline.
• Focus on value delivered to clients and the company, not lines or tickets.

Skills

Senior engineer

Full-stack capability

Backend language

SOA

Async processing

Relational DB

CS fundamentals

AI coding agents

Code quality

Remote collaboration

English fluency

Education

BS in Computer Science or equivalent

Tools

Docker

Kubernetes

Cloud platforms (AWS/GCP/Azure)

React

SQL/NoSQL

Claude Code

Job description

Overview

Smartling was founded 16 years ago to make localization and translation seamless. Today, Smartling is profitable and backed by Vitruvian Partners, a global technology-focused investment firm, supporting company growth and expanding our market share and leadership position. We are the only cloud-based, AI-enabled translation platform that combines a Neural Machine Translation Hub and professional language services, empowering teams to collaborate in real-time to create experiences customers love.

Smartling is looking for a creative and passionate Senior Software Engineer to work remotely and build and support highly-scalable services that deliver best-in-class experiences for our clients. You will be working on a multi-disciplinary team, contributing to technical architecture decisions, and building robust, enterprise-grade systems. You will have the opportunity to work across the full technology stack and deliver high-impact results for the company. You will be joining an existing team developing and maintaining Smartling's translation management application that allows our clients and professional translators to manage the localization process for their websites and documents in an agile fashion.

Our Engineering Processes & Beliefs:

• AI-first development - AI agents write all new code, engineers own the design, review, and results
• TDD - Test Driven Development
• Continuous Deployment - multiple times daily
• SOA - Service Oriented Architecture and APIs
• Full test automation - we have no QA team
• DevOps is not a team, it is a culture

You Will

• Own features end to end, from clarifying the problem to releasing in production
• Work across repositories and technologies (Java, Node, React, and others) delivering all new code through AI agents, with Claude Code as your main tool
• Take responsibility for the quality of everything you ship, including work produced by AI agents
• Work with colleagues, product managers, and CSMs to clarify scope, trade-offs, and client needs
• Cover changes with automated tests and take them through the delivery pipeline
• Judge your work by value delivered to clients and the company, not by lines changed or tickets closed

You Have

• Senior engineering experience, and either full-stack skills or readiness to become full-stack
• Working proficiency in at least one backend language (Java, Kotlin, or Node) and willingness to work in the others
• Solid grasp of software architecture, including service-oriented architecture
• Understanding of events, message buses, and asynchronous processing
• Relational database background, including schema design, indexes
• Computer science fundamentals: algorithms, data structures, and runtime basics such as garbage collection
• Hands-on experience with AI coding agents and the judgment to review what they produce
• Engineering discipline. You can design, test, and explain every change you ship, including code written by an agent.
• Broad knowledge across the stack rather than deep specialization in one tool
• Fluent written and spoken English
• Ability to communicate clearly with engineers and non-technical colleagues
• BS+ degree in computer science or equivalent experience
• A home office setup conducive for working remotely, and the ability to work effectively as a remote team member*

Preferred but not required

• Experience with modern frontend frameworks such as React
• Experience with SQL and NoSQL databases and large data sets
• Experience with cloud platforms (AWS, GCP, Azure)
• Experience with containers and orchestration (Docker, Kubernetes)

You Are

• Curious. You learn new tools and areas quickly.
• Value-driven. You choose the work that matters most to clients.
• Detail-oriented. You verify what an agent produces before you ship it.
• A team player. You work well with peers, product, and client-facing colleagues.
• An individual contributor. You want to build and ship, not to manage people.

You Will Enjoy

• Freedom - we are remote first
• Growth - an opportunity to learn and advance your career
• Modern tooling - Claude Code is a core part of your daily workflow
• Culture - an energetic, value-driven, and fun culture and team spirit

Smartling is proud to be an equal-opportunity employer. We are committed to building an inclusive global team that represents a variety of backgrounds, perspectives, beliefs, skills, and experiences.

*To work from home, you must have a strong internet connection, a quiet space, and a professional (distraction and clutter-free) background.