Senior Full Stack Engineer - Backend focused -

sennder GmbH; Berlin; On-site; EUR 90,000 - 130,000; Full time

Job summary

sennder HQ Berlin, a leading digital freight forwarder, is seeking a Senior Software Engineer (Full Stack) to help scale our core freight platform. You will design and build services powering the TMS, enabling operators and carrier-facing teams with reliable data and interfaces.

In a cross-functional team, you will own the full service lifecycle from design to operation, advancing microservices, observability, and modern CI/CD while collaborating with product managers and other pods.

Qualifications

• Experience building reliable, scalable web applications in production.
• Strong Python backend experience.
• Deep knowledge of microservices, event-driven architectures, and REST APIs.
• Hands-on with PostgreSQL and Kafka.
• Frontend experience with Vue.js.
• Experience with AWS, Docker, Kubernetes, Terraform; GitLab familiarity is a plus.
• Strong English communication and collaboration.

Responsibilities

• Design and build core services for sennder's platform.

Skills

Python

Backend

Vue.js

Microservices

REST APIs

Event-driven

English

Tools

PostgreSQL

Kafka

AWS

Docker

Kubernetes

Terraform

GitLab

CI/CD

Job description

Senior Software Engineer (Full Stack)

sennder HQ Berlin, Software Engineering, In office, Full-time

About sennder

sennder is redefining road logistics. As Europe’s leading digital freight forwarder, we are building a smarter, faster, and more sustainable future for freight, powered by a single, unified platform that already runs our entire business. We are moving from a decade of growth through acquisition to a company that is outcome-driven, outward-focused, and AI-native by design.

We are a growing team looking for a Senior Software Engineer (Full stack) in the Freight Planning & Fulfillment team to help us on our journey to revolutionize road freight logistics. The role is based in our Berlin office.

What you will do ...

As a Senior Software Engineer (Full Stack), you'll design and build core services that are instrumental to sennder's growth. You'll help create products for sennder’s core freight platform, acting as the backbone of the TMS by providing reliable data and interfaces for operators and supporting the carrier-facing teams in fulfilling their needs.

Working in a cross-functional team of 5 people, you'll have the autonomy to deliver scalable solutions with direct business impact and own the full-service lifecycle, including infrastructure, with support from our Platform team.

• Scale our engineering organization and evolve our backend, DevOps culture, and engineering practices to support sustainable growth
• Design robust microservice architecture, including service mesh capabilities, stable interfaces, observability and metrics, and clear API contracts
• Take a leading role in architectural design and technical decision-making
• Lead mid-sized engineering projects from planning through delivery and operation
• Raise engineering standards and improve development processes to increase quality and efficiency across the stack
• Collaborate with product managers to plan and deliver shippable features, while communicating effectively with other pods and stakeholders
• Use AI-enabled engineering tools to improve the development of workflows, automation, code quality, and team productivity.

What we are looking for ...

• Demonstrated experience building and operating reliable, scalable web applications in production environments
• Strong hands-on Python experience, with the ability to work confidently across backend services and contribute at Senior Engineer level
• Strong backend engineering skills, with a very good understanding of microservices architecture, event-driven architecture, and modern REST APIs
• Hands-on experience with PostgreSQL and Kafka; Kafka experience is a must for this role
• Frontend experience is required, with hands-on knowledge of Vue.js
• Practical experience with AWS, Docker, Kubernetes, Terraform, and modern CI/CD practices; familiarity with GitLab is beneficial
• Great communication skills, a collaborative approach, and the ability to work effectively as a team player in English
• Strong problem-solving skills, with ownership of technical and non-technical challenges and the ability to bring topics to completion
• Our current stack includes Python, PostgreSQL, AWS, Kafka, Kubernetes, Terraform, and GitLab

Why choose sennder ...

We believe in empowering our people to grow beyond their limits, embrace challenges, and create solutions that drive our collective success. Our culture thrives on entrepreneurial spirit, resilience, and collaboration.

Dynamic Scale-Up

sennder is at a pivotal stage – transitioning from a scale-up to a sustainably growing company. This means we move fast and constantly push ourselves to improve. Joining us means being part of an ambitious, international team of talented individuals who value teamwork as much as bold thinking. Face-to-face connections across our offices remain central – it's not uncommon to travel to our offices across Europe to collaborate as we tackle challenges and celebrate wins, together.

Put Your Stamp on the Industry

We operate in a complex and ever-changing industry where your ideas and efforts have a tangible, transformative impact. This is your chance to be hands‑on in creating sustainable, meaningful solutions that help businesses thrive.

Employee Well-Being

We make mental wellbeing and engagement a priority through initiatives like our sennCare program, a partnership with nilo (global wellbeing platform), and regular satisfaction surveys via Culture Amp. And most importantly, work alongside people who truly care about you as a person. There is something special about the people at sennder that goes beyond just ‘work’.

Your Growth, Rewarded

We believe in rewarding our team for their commitment and contributions to our long-term success. Our compensation package may include performance bonuses, referral rewards, or equity that align with our goal of building a thriving company together. We’re excited to grow with you!

Vibrant Workspaces

Our offices are equipped with healthy snacks, focus zones, and social areas to keep you energized and connected. When you walk into a sennder office, you immediately feel the sennder spirit: our shared culture paired with each location’s own unique character. Highlights include a slide in our Wroclaw office and a sunny rooftop terrace in Berlin, Amsterdam, and Milan! We also enjoy coming together regularly, from monthly aperitivos to spontaneous team moments.

We celebrate diversity and value your character just as much as your skills. If you don’t meet every requirement, don’t worry, we still encourage you to take a chance and apply. Bring your authentic self and help us shape the future of logistics in Europe.