Senior Full Stack Engineer

Who we are:

DefSecIntel Solutions is freedom defenders’ partner in surveillance and control.

Estonian TOP1 Innovator DefSecIntel Solutions' combat-proven mobile autonomous surveillance systems and C-UAS with AI-powered technology are redefining the landscape of border security and defence.

Our technologies play a vital role in combating cross-border smuggling, illegal border crossings and countering hostile drones. Notably, our systems are deployed in Ukraine, supporting the UAAF in its fight against russian aggression.

We work closely with global prime contractors and actively participate in international defence, border security, and force protection programs. DSI is a recognized partner of international organizations such as the EU and NATO, contributing to security and defence R&D programs, including the European Defence Fund.

With over 80 employees and operations headquartered in Tallinn, Estonia, DSI operates on a global scale.

Our excellence has been recognized with numerous awards, including:

• TOP1 Innovator 2024 
• TOP1 DefenceTech Company
• TOP2 Most Competitive Estonian Energy and Manufacturing Company
• TOP3 Exporter
• The Best Estonian Defence Company 2023

Join us in shaping the future of defence technology and making a more secured world.

We are looking for a talented Senior Full Stack Engineer to join our dynamic development team. You will be responsible for designing, developing, testing, and maintaining robust web applications. You should be equally comfortable working on frontend and backend code and eager to collaborate with peers and cross-functional teams to create seamless, performant, and scalable software solutions.

What you will be doing: 

• Maintain and develop new features using Node.JS, Svelte and GraphQL
• Actively participate in team discussions, stand-ups, and planning meetings
• Design and document feature-level data flows and system architecture clearly and thoroughly
• Write, maintain, and improve automated unit and E2E tests to ensure the reliability of new and existing features
• Support and debug production systems, including rapid response to production incidents
• Collaborate across teams to share knowledge, provide guidance, and offer help when needed
• Take ownership of features from conception to deployment and beyond, ensuring maintainability and performance

What we are looking for:

• Advanced proficiency with Node.js and ExpressJS
• Deep knowledge of JavaScript/ECMAScript and TypeScript
• Experience working with non-relational DBs, especially MongoDB
• Strong understanding of HTML and CSS
• Experience containerizing applications using Docker
• Experience using frontend frameworks such as React, Angular, or Vue
• Experience writing unit tests, preferably with Jest, and familiarity with E2E testing tools like Playwright
• Strong understanding and hands-on experience with Git

Nice-to-haves:

• Experience with Svelte framework
• Familiarity with GraphQL for API design and integration
• Prior work on real-time applications (e.g., WebSocket-based) and exposure to map visualization engines such as Leaflet or MapLibreGL

What we offer:

• Support our mission to create a safer and more secure world
• Opportunity to work alongside talented individuals and participate in the creation and development of innovative solutions and technologies
• Annual €1000 budget for training, conferences, and development opportunities to advance your skills
• €1000 referral bonus for helping us grow our team
• Stebby sports allowance of 150€ per quarter
• Mental health support and consulting via the Meliva platform
• Three health days per year to focus on personal care
• Free parking for employees
• Social activities and team event