Senior Fullstack Developer

Zendr; Solna kommun; On-site; SEK 613,800 - 781,200; Full time

Benefits offered by this job

Flexible working conditions

Competitive salary

Genuine room to grow

Job summary

Zendr, located in Solna kommun, is looking for a Senior Fullstack Developer to help build the next generation of their B2B freight platform. You'll take ownership of end-to-end development, contributing to both backend services and user-facing frontend experiences within a collaborative and fast-paced team.

The ideal candidate will have at least 5 years of software development experience, with strong skills in TypeScript and Node.js. The role includes responsibilities in designing and implementing REST APIs, developing scalable solutions, and working with cross-functional teams.

Qualifications

• At least 5 years of professional software development experience.
• At least 3 years of experience building applications in TypeScript/JavaScript.
• Strong proficiency in Node.js and Express.js.

Responsibilities

• Design, build, and shape the new platform.
• Develop scalable and efficient solutions.
• Implement REST APIs to power core features.

Skills

TypeScript/JavaScript

Node.js

REST APIs

Cloud platforms (AWS)

Frontend frameworks (React, Svelte, Angular, Vue)

SQL and NoSQL databases

Tools

Express.js

Docker

Job description

About The Role

We're looking for hands‑on Senior Fullstack Developers to join our mission of building the next generation of our B2B freight platform. As part of our ambitious tech team you’ll work within a team led by a tech lead, collaborating closely with product owners, QAs, UX, and fellow developers to deliver scalable, reliable and user‑focused solutions that create real value for our customers. In this role you’ll take ownership of end‑to‑end development, from backend services and APIs to frontend experiences, and play a key part in delivering and improving our platform. You’ll join a fast‑moving environment where pragmatism, collaboration and clean engineering are what move us forward. This is a role for someone who enjoys building, iterating and solving real problems, not just talking about them.

Key Responsibilities

• Play a central role in designing, building, and shaping our new platform
• Develop scalable and efficient solutions using TypeScript and Node.js
• Design and implement REST APIs to power our platform’s core features
• Work with modern frontend frameworks to deliver smooth user experiences
• Collaborate closely with cross‑functional teams to deliver high quality solutions
• Build automated tests to ensure performance, reliability and maintainability
• Contribute to technical discussions and help drive engineering best practices
• Stay on top of modern technologies and identify opportunities to improve our stack

About You

You’re an experienced fullstack engineer who has worked effectively within teams and takes pride in delivering real value, not just shipping code. You thrive in a collaborative environment and aren’t afraid to take ownership. You value simplicity, clean code and real impact. You enjoy working across the stack, are comfortable making sound technical decisions within an established architecture and take pride in delivering high quality solutions. You communicate clearly, enjoy working with others and are motivated by seeing your work make a difference, for both users and the team.

We're Looking For Someone Who Has

• At least 5 years of professional software development experience
• At least 3 years of professional experience building applications in TypeScript/JavaScript
• Strong proficiency in Node.js and Express.js
• Experience designing and implementing REST APIs
• Hands‑on experience with cloud platforms (preferably AWS)
• Experience with at least one modern frontend framework (React, Svelte, Angular, Vue)
• Practical experience with SQL and NoSQL databases

High Value If You Also Bring

• Production observability and monitoring (logging, metrics, tracing)
• Familiarity with CI/CD and containerization (Docker)

About Zendr

Zendr is a fast‑growing SaaS company developing cloud‑based solutions for B2B freight. We’re an established business with a stable customer base relying on us every day, which gives us a solid foundation as we continue to scale. We’re proud of our innovative platform, of the passionate team behind it, and of our commitment to making our customers’ work easier. Collaboration and well‑being are central to how we work, and we want you to feel valued, engaged, and able to influence our journey. At Zendr, you can grow quickly, both professionally and personally, while being part of building something meaningful.

What We Offer

• Direct impact on our core product; your work will shape the next generation of our B2B freight platform
• Work with a modern tech stack
• High ownership and autonomy in how you deliver, within a clear technical direction set by your team
• A culture where ideas are welcomed and your input truly matters
• Genuine room to grow, we invest in our people’s development as the company scales
• Flexible working conditions
• A competitive salary in the range of 55,000-70,000 SEK per month, tailored to your background, skills, and previous experience, along with a locally adapted benefits package designed to support your well‑being and growth

Our hiring process

• Application review: We'll review your application promptly and get back to you within a few days.
• First conversation: An informal video call to learn more about you and share who we are.
• Coding assignment: A practical task to help us understand your technical expertise.
• Technical interview: A meeting discussing the coding assignment to better understand your reasoning and decision making.
• Final meeting: Meet the team, talk through the role in detail, and see if we're the right fit for each other.

Additional Information

We review applications on a rolling basis and aim to get back to you promptly. Please note that we’re currently in the summer holiday period, which may mean slightly longer response times than usual.

Start date: As soon as possible

Scope: Full‑time, permanent position

Location: Stockholm, Jönköping and Linköping