Return (https://return.energy) is hiring a software engineer who will work on platforms that accelerate the transition to carbon-free energy. Return’s main activity is building and operating industrial-size Battery Energy Storage Systems. Our operations are located in the Netherlands, Germany, Belgium, and Spain. You will be making a measurable (country-level) impact on the transition to renewable energy. Return recently raised €300M to support its growth.
While we employ over 100 people, Return’s technical team is still small (15 people). Our platform automates processes in energy storage, monitoring, market optimization, sales, project management, procurement, construction, and customer service.
During the first three years of operation, we laid the foundation for our platforms, and we are ready to scale up. This is why we are looking for an experienced software engineer.
You will be working on internal tools that support our business departments (origination, development, construction, operation, and general). Our tech stack is straightforward: Postgres, Ruby on Rails 8, Turbo, Stimulus, and Tailwind. We tend to keep meetings to a minimum in order to provide at least five hours of uninterrupted coding time per day. We practice code reviews and apply automated and manual testing. The platform is often deployed multiple times per day.
We’re very much open to remote work as long as you live in the EU. Our hiring process is swift but thorough: a 30-minute call to get acquainted and discuss financials, one or more technical interviews, and a paid visit to Amsterdam to meet the team.
The tech team members have co-founded several companies and have experience with remote development teams since 2008. They will personally help you through most of the recruiting process (there is no recruiter involved).
Apply here: https://jobs.polymer.co/return/39294 (EU residents ONLY)
We're building the AI-native platform for documentation. Teams use GitBook to create and leverage product knowledge — technical docs, API references, user guides, and FAQs.
GitBook is AI-native for both readers and writers (human or otherwise). We provide the tooling that helps technical writers and product teams stay on top of the fast-moving products they're documenting.
We're growing our engineering team and are currently hiring for:
- Product Engineers Engineers who enjoy working closely with customers to solve real problems. We don't have PMs or product owners — you'll talk directly with users, ship features, and iterate quickly based on feedback.
- Platform Engineers Engineers with experience building and scaling public-facing web platforms. GitBook serves 120M+ page views per month, and our content model presents challenges around concurrent editing, caching, and large-scale delivery.
- Security Engineers Hands-on engineers focused on protecting our users, infrastructure, and brand. You'll help us strengthen security across the organization and own initiatives from concept to production.
Contact me directly steven@gitbook.com or https://www.gitbook.com/careers (Apply via the Product Engineer role regardless of your background.)
We are consistently hiring backend engineers ranging from Senior level to Staff / Lead / Director / Principal Go engineers. If you have experience with a different tech stack, we offer a 10-week onboarding program to train you in Go, scaling and other key topics: https://tinyurl.com/2u5x9f9w
We’re also hiring for:
* Director of Engineering
* Lead Backend Engineer (Real-Time Video Infrastructure)
* Lead Backend Engineer (Go)
At Stream, we use Go for our video SFU, chat API, Moderation and Feeds, serving high traffic from major apps like Strava, Nextdoor, Patreon, and Midjourney. Our tech stack: Go, CockroachDB, RocksDB, WebRTC, Raft, and Redis.
Why Join Stream?
* High scale/ difficult engineering, we have customers using our products with millions of users
* Default alive. Startup growth opportunity with healthy revenue
* All managers are hands-on and capable engineers
* Edge network of servers around the world
* Great opportunity to learn and grow
Remote: our roles are primarily NL, US, North Macedonia, or CA-based (hybrid), but exemptions for remote work within the EU may apply to specific cases. Visa Sponsorship: Available for the Netherlands
Apply here: https://jobs.ashbyhq.com/stream?utm_source=5rrpvObp3r
We are a Machine Learning consulting company that builds end-to-end Machine Learning solutions. By applying the latest AI research, we keep our clients at the forefront of innovation. If you are interested check out: https://www.ml6.eu/knowledge-hub/blog and https://www.ml6.eu/customers/cases
Work on innovative projects for the biggest clients across Europe such as Randstad, ASML, FUNKE, and many more! Whether it’s about leveraging LLMs to improve customer support, building data lakes on cloud platforms to improve storage or implementing models using sensor data for quality control. You can find it all at ML6. You will mostly work with Python and a range of ML frameworks such as TensorFlow, PyTorch, or HuggingFace Transformers to solve hard Machine Learning tasks and help bring these application into production by building data pipelines and cloud infrastructure on all of the major cloud providers (GCP, AWS, Azure).
Open roles include:
• Senior/medior AI Engineer
• Senior AI Project Manager
• Chief Product Owner
and many more!
Apply now at the https://jobs.ml6.eu/
We're an AI platform for protein engineering (customers include Novo Nordisk, J&J, Grifols). We run our own wet lab in Amsterdam to generate training data for our ML models and to build the automation playbook we share openly with the field. We're hiring a software engineer to work embedded with our bioengineering team. You'd build things like: computer vision pipelines for colony picking, interfaces for lab automation workcells, integrations between lab instruments and Benchling. Python, APIs, databases, some frontend.
No PhD or biotech background needed. You'll pick up the biology. We care about solid engineering skills and curiosity about working at the intersection of software and hardware.
Apply: https://jobs.ashbyhq.com/cradlebio/7a4f7d2d-714e-4c01-84bb-9...
Adaptive is building a platform for enterprise AI infrastructure. Our current identity security platform is used by various fintech, regulated, and banking customers.
We're hiring a software engineer who is passionate about enterprise security, kubernetes, infrastructure, cloud automation, etc.
There are other opportunities that can be found here: https://adaptive.live/careers
We offer a strong engineering culture and are looking for engineers to design and optimize high-performance trading systems that power our periodic auction matching infrastructure.
We build production systems in Rust and are seeking engineers with meaningful Rust, C++, Java, or Python experience, particularly from backend or systems-oriented environments.
Systems Engineer Systems programming role focused on low-latency, high-throughput distributed computing. Work across order and data workflows, auction execution, reliability, and performance optimization to ensure the platform is efficient, fault-tolerant, and capable of complex trade matching at scale.
We’re especially interested in engineers who: Have built backend or systems-level software | Care deeply about performance, concurrency, and correctness | Are motivated by real-time, performance-sensitive systems | Have experience with compilers, static analysis, or language tooling (a strong plus)
Software Engineer, Data Platform Build and evolve the infrastructure behind our analytics platform. The role sits between data engineering and backend development and focuses on high-volume, time-sensitive data pipelines and workflow systems that process terabytes of trading data and billions of rows daily.
We’re especially interested in engineers who: Have built internal data platforms or large-scale pipelines (Python/SQL; Rust a plus) | Have experience with workflow orchestration (Temporal, Airflow, Dagster, etc.) | Have worked with large datasets, columnar formats (Parquet/Arrow), and production data systems
CONTACT: careers@onechronos.com – please include “HN” in the subject line.
ADDITIONAL OPENINGS: https://www.onechronos.com/careers/
We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the beautiful centre of Amsterdam. And our robots are already earning real revenue operating on construction sites all over the Netherlands.
We're looking for experienced software engineers for many roles. You can help us solve problems like:
- Data sync and analytics queries across a fleet of robots (that can be offline for hours at a time)
- Modelling buildings in code and finding the right UI for operators to edit them
- Designing systems for robots to drive safely and fully autonomously around a building site
Check out the progress we've already made on Atrium, our operating system for robotics: https://www.monumental.co/atrium
We're rapidly scaling up operations and we need experienced engineers who can build the systems that manage all of that complexity. If you think that 'full-stack' could reasonably mean debugging firmware, mixing buckets of mortar _and_ writing React components, we are looking for you. Robotics experience not required!
About the company:
• Technical founding team with relevant industry experience (part of Nvidia Inception Program)
• Backed by well-known European VCs (SpeedInvest + Galion.exe)
• Building anomaly detection and agentic evaluation on top of AI agent observability stack (Otel Native)
Ideal candidate:
Experience in open telemetry and observability. Preferably in a cloud native startup environment and excited to help product teams achieve maximum developer velocity with best-in-class DX and dev tooling. Bonus if you are an ex-founder.
Reach out to the founder directly: https://www.linkedin.com/in/rhommes/ or visit our website https://moyai.ai