Senior Software Engineer - Tallinn
2 päeva tagasi

Töö kirjeldus
About Zerofy
At Zerofy, we are building the AI and cloud platform powering the electrified home.
Our system integrates solar, batteries, EV chargers, heat pumps, and dynamic tariffs into a single intelligent optimization layer. Using our own forecasting and control algorithms—developed together with research partners and universities—our platform autonomously optimizes household energy usage to reduce household energy cost and helps to stabilize the grid.
We operate a pure cloud architecture serving solar installers and some of Europe's largest energy companies through our B2B platform.
Our mission is to become the intelligence layer for residential energy.
The Role
We are looking for a Senior Software Engineer who cares deeply about engineering craftsmanship, enjoys solving complex technical problems, and wants to build systems at the frontier of cloud, AI, and energy.
You will design and build core parts of our platform, working across backend services, cloud infrastructure, device integrations, and AI-driven systems.
This role comes with a high degree of ownership and autonomy. You will own systems end-to-end, influence architecture, and help shape the technical direction of the company.
You will also mentor junior engineers and contribute to building a strong engineering culture.
Our Tech Stack
Our backend is built primarily in TypeScript running on , using a cloud-native, serverless architecture on Google Cloud Platform. We use services such as Cloud Functions, Pub/Sub, Firestore, and BigQuery to build scalable, event-driven distributed systems. Our platform integrates with a wide range of external APIs and IoT devices, including solar inverters, batteries, EVs, and heat pumps.
A core part of our platform includes proprietary forecasting, optimization, and control algorithms developed in collaboration with research partners and universities.
We also use modern AI coding tools extensively, including Claude, Cursor, Conductor, and similar frontier tools. We expect engineers to actively leverage AI-assisted development to increase velocity and capability.
What You'll Do
Design and implement core backend systems using TypeScript and
Architect and build scalable, reliable cloud-native services
Own technical components end-to-end, from design to production
Build distributed, event-driven systems running on Google Cloud
Integrate external APIs from energy devices, EVs, and IoT systems
Work closely with our AI and algorithm systems powering optimization and forecasting
Make architectural decisions and improve system design, reliability, and performance
Mentor junior engineers and help raise the engineering bar of the team
Use modern AI coding tools extensively to accelerate development
Contribute to a culture of engineering craftsmanship and continuous improvement
What We Offer
High degree of ownership and autonomy
Opportunity to shape the architecture and core systems
Work on meaningful problems with real-world climate impact
Small, highly capable, senior team
Extensive use of frontier AI tools in engineering workflows
Competitive salary and equity participation
Flexible remote / hybrid setup
Office in Tallinn, Estonia
5 weeks vacation
Coworking support
Why Join Zerofy
You'll work on one of the most important technical challenges of the coming decades: building the intelligence layer for electrified energy systems.
This is an opportunity to build complex, meaningful systems with real-world impact, in an environment that values engineering excellence, ownership, and innovation.
What We're Looking For
Required
5+ years of professional software engineering experience
Strong expertise in backend engineering using TypeScript and
Experience building cloud-native distributed systems
Strong engineering craftsmanship and attention to quality
Experience owning complex systems or components end-to-end
Ability to design systems and architecture, not just implement tasks
Experience mentoring engineers and contributing to a strong engineering culture
Ability to operate with a high degree of ownership and autonomy
Strong interest in modern engineering tools, including AI-assisted coding
Highly valued
Experience with Google Cloud Platform, AWS, or similar
Experience with serverless architectures and event-driven systems
Experience integrating external APIs or hardware/IoT systems
Experience working on applied AI, data systems, or optimization systems
Experience using modern AI coding tools such as Claude, Cursor, or similar
Ideal Candidate
The ideal candidate:
Is a strong engineering craftsperson
Takes pride in building high-quality, reliable systems
Enjoys working on complex technical problems
Has strong ownership mentality and operates autonomously
Stays at the forefront of technology and modern engineering practices
Is curious, pragmatic, and execution-focused
Bonus points if you:
Own or are interested in solar, batteries, EVs, or heat pumps
Are interested in energy systems, electrification, or climate tech
Sarnased töökohad
As a Software Engineer, you will be part of a cross-functional development team that designs, builds, and maintains scalable software solutions supporting Coolbet's products and operations. · ...
1 kuu tagasi
As a Software Engineer, you will be part of a cross-functional development team that designs, builds and maintains scalable software solutions supporting Coolbet's products and operations. · ...
1 kuu tagasi
As a Backend Software Engineer at Wallester, you will be a system owner responsible for designing, building, and operating the core services that power our fintech platform. · ...
1 nädal tagasi
Senior Software Engineer .NET (AaaS) role involves developing high-performance backend systems and Azure cloud services for an international Accounting as a Service platform. · ...
2 nädalat tagasi
Senior Software Engineer .NET (AaaS) | Tallinn, Estonia | Remote · We're working with Riverty on this exciting opportunity. Join a fast-growing fintech organization as a Senior Software Engineer, playing a crucial role in evolving their Azure cloud services and shaping their engi ...
2 päeva tagasi
We are looking for an enthusiastic and motivated Software Engineer to join our team at Microsoft Development Center Tallinn. As a member of the ESS (Engineering Systems and Services), the Software Engineer II helps build products capable of supporting hundreds of millions of user ...
1 kuu tagasi
This role focuses on modernizing Azure cloud environments and developing high-performance backend systems for the Accounting as a Service product. · ...
1 nädal tagasi
Senior Software Engineer .NET (AaaS) role focuses on modernizing service-oriented architecture within Accounting as a Service product line. · ...
2 nädalat tagasi
We prioritise progress over perfection, aiming to deliver real value quickly while improving continuously. · ...
1 kuu tagasi
Join our Digital Channels Product Team at Omniva as a Software Engineer with a front-end focus. · ...
1 kuu tagasi
We are seeking for a Java full-stack engineer to join our teams, grow with us, and teach us a few things along the way. · Work collaboratively with cross-functional teams to develop and maintain high-quality software solutions using Java and other technologies. ...
1 kuu tagasi
We are looking for a Software Engineer – RAG, Knowledge Graphs & Agentic Systems (m/f/d) to join our team at Riverty. · ...
5 päeva tagasi
We're working with Riverty on this exciting opportunity. This role focuses on enhancing and expanding their innovative Accounting as a Service product. · Assist in tackling architectural and coding challenges, supporting migration, refactoring, and modernization of Azure cloud en ...
1 nädal tagasi
We are looking for passionate and driven individuals who share our vision of creating truly high-quality and profitable products for our clients. · Owning frontend features end-to-end - from technical design to deployment and continuous improvement · IMPLEMENTING COMPLEX USER-FAC ...
1 nädal tagasi
Omniva connects people businesses and communities across the Baltics and beyond We've grown from Estonia's trusted postal service into a modern technology-driven logistics company supporting the growth of e-commerce and global trade Every day we help our customers send receive an ...
1 kuu tagasi
We are looking for a Software Engineer to work on the development of an innovative Smart Home Device system which involves connecting HVAC devices directly to the Cloud. · Has + years of experience as a Software Engineer with .NET framework and C#. · Cares about software quality ...
1 nädal tagasi
We are looking for a Software Engineer to join our Baltics Logistics Product Team. As a full-stack role with an emphasis on back-end development, you will design and build robust backend services that power Omniva's digital logistics platforms. · Design, develop and maintain back ...
3 nädalat tagasi
We create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. · What you'll be doing · ...
1 kuu tagasi
We are looking for passionate and driven individuals who share our vision of creating truly high-quality and profitable products for our clients. · ...
1 nädal tagasi
We are looking for passionate and driven individuals who share our vision of creating truly high-quality and profitable products for our clients. · ...
1 nädal tagasi
We're working with Riverty Administration Services GmbH on this exciting opportunity. Join a dynamic fintech organization specializing in Accounting as a Service for eCommerce and Mobility industries. · ...
1 kuu tagasi