Full-Stack Engineer: Startup Builder with Hands-On Ownership

OpsArmy; Warszawa; On-site; PLN 150,000 - 230,000; Full time

Job summary

OpsArmy is seeking a hungry, scrappy Full-Stack Software Engineer to join our startup team in Warsaw. This hands-on role rewards ownership, fast learning, and the ability to work across multiple hats in a fast-paced environment.

You’ll build, maintain, and integrate front-end and back-end features, collaborating with teammates to turn product requirements into working solutions while writing clean, scalable code and resolving issues quickly.

Qualifications

• Strong experience as a Full-Stack Software Engineer or Developer.
• Experience building and maintaining production applications.
• Strong understanding of both front-end and back-end development.
• Ability to work independently and take ownership of technical tasks.
• Strong problem-solving and debugging skills.
• Comfortable with ambiguity and learning new technologies quickly.
• Strong English communication skills.
• Strong sense of urgency and ownership.

Responsibilities

• Build, maintain, and improve full-stack web applications
• Develop and integrate front-end and back-end features
• Work closely with the team to turn product requirements into working solutions
• Troubleshoot, debug, and resolve technical issues
• Write clean, maintainable, and scalable code
• Take ownership of projects and features from development through implementation
• Research and learn new technologies, tools, and frameworks as needed
• Identify problems proactively and find practical solutions
• Work in a fast-paced environment where priorities may change quickly
• Collaborate with team members to improve product functionality and performance

Skills

Full-Stack development

Production-grade apps

Front-end & Back-end

Independent worker

Problem-solving

English communication

Learning quickly

Ownership

Job description

OpsArmy is seeking a hungry, scrappy Full-Stack Software Engineer to join our startup team in Warsaw. This hands-on role rewards ownership, fast learning, and the ability to work across multiple hats in a fast-paced environment.

You’ll build, maintain, and integrate front-end and back-end features, collaborating with teammates to turn product requirements into working solutions while writing clean, scalable code and resolving issues quickly.