World-class customer service is one of the cornerstones of Wolt 💙 Over the years we have invested a lot in our in-house built support tooling. Why? Because we're convinced it's the secret sauce that ensures smiles on the faces of our customers and partners across all 30 countries that we operate in. We take huge pride in our customer operations’ quality, so on top of building delightful support experiences in our consumer app we also aim to uncover and tackle issues before our customers and partners even notice something might be wrong.

In a nutshell, the Support Productivity team is building world-class internal tools for our customer, merchant and courier support. Support is a big deal for us and we will do our best to keep our 25M+ registered customers, 200.000+ courier partners, and 100.000+ restaurant and retail partners happy. Support Productivity is a new team is playing a key role in this equation and it takes some real serious work from our dedicated support teams in each of the 30 countries to ensure the satisfaction of those customers and partners 

We are building several admin applications on top of our inhouse chat application to provide a custom support platform that is scalable, reliable and efficient. Our tool supports several thousand concurrent users on top of our in-house chat application built to serve 20mil+ conversations each month. 

So, if you're ready to roll up your sleeves and craft tools that match the same level of quality and passion we dedicate to creating our external solutions, you've found your tribe at Wolt! 💙

📍This role can be based in our tech hub in Tallinn or Helsinki.

Key Responsibilities:

1. Develop responsive and user-friendly interfaces using modern frameworks such as React + TypeScript
2. Collaborate with cross-functional teams to translate designs and requirements into functional features.
3. Ensure performance, scalability, and accessibility of web applications across browsers and devices.
4. Debug, test, and maintain codebases to ensure reliability and quality.
5. Stay updated with frontend technologies and implement best practices.

Our humble expectations

• Frontend experience with focus on React.js and TypeScript,
• Testing experience is considered as a plus (unit testing - Jest, react-testing-library),
• Experience in building scalable and efficient frontend applications 
• Curiosity and willingness to learn
• Ability to communicate effectively with stakeholders
• Product thinking - you should not only do what’s being told, but participate in conversations, and challenge the proposed solutions

Nice to have:

• Experience with backend is a benefit (NodeJs, Python, MongoDB). 

Next steps:

These positions will be filled as soon as we find the right persons, so make sure to apply as soon as you realize you really, really want to join us!

Who we are

The role

The day-to-day

• Define and own the end-to-end electronic architecture for marine robotic subsystems, ensuring consistency across hardware, software, AI, and navigation and control interfaces

• Lead the selection of components, define specifications, and establish electronic design standards that balance performance, cost, and manufacturability

• Collaborate with AI and software engineers to design hardware interfaces that support on-board inference, sensor fusion, and autonomous decision-making

• Work with navigation and control engineers to ensure electronic subsystems meet the requirements for guidance, communication, and real-time control

• Design schematics and PCB layouts in coordination with mechatronics engineers, ensuring proper form, fit, and function through analytical and simulation tools

• Mentor and guide engineers within the electronics discipline, raising the quality bar for design reviews, documentation, and technical decision-making

• Drive validation and verification campaigns, defining test strategies, performing hardware bring-up, and leading electrical troubleshooting to mature designs toward production readiness

• Produce and maintain comprehensive design documentation in line with Helsing's quality standards, including 2D/3D deliverables and manufacturing packages

You should apply if you

• Hold a Master's degree in Electrical Engineering, Electronics Engineering, or a closely related discipline

• Have designed, built, and validated complex electronic systems from concept through to production, including schematic capture, PCB layout, and hardware integration

• Have led or mentored other engineers on electronics design decisions, design reviews, or technical direction

• Bring depth of knowledge in electronic component integration, including experience using ECAD/MCAD interfaces to realise tightly packaged assemblies

• Have collaborated directly with software, AI, or control systems engineers to deliver integrated hardware-software solutions

• Communicate complex technical concepts clearly, both in writing and verbally, and can represent your discipline effectively in cross-functional discussions

Note: We operate in an industry where women, as well as other minority groups, are systematically under-represented. We encourage you to apply even if you don’t meet all the listed qualifications; ability and impact cannot be summarised in a few bullet points.

Nice to Have

• Have designed electronics for maritime embedded systems, autonomous platforms, or similarly constrained operational environments

• Have practical experience with EMC design, testing, and certification

• Have worked with battery management systems or robotic power distribution architectures

• Have experience designing hardware interfaces for AI inference modules, sensor arrays, or autonomous navigation systems

• Have contributed to design-for-manufacture processes, including collaboration with contract electronics manufacturers

Join Helsing and work with world-leading experts in their fields 

• Helsing’s work is important. You’ll be directly contributing to the protection of democratic countries while balancing both ethical and geopolitical concerns

• The work is unique. We operate in a domain that has highly unusual technical requirements and constraints, and where robustness, safety, and ethical considerations are vital. You will face unique Engineering and AI challenges that make a meaningful impact in the world

• Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances in our field of world are not incremental: Helsing is part of, and often leading, historic leaps forward

• In our domain, success is a matter of order-of-magnitude improvements and novel capabilities. This means we take bets, aim high, and focus on big opportunities. Despite being a relatively young company, Helsing has already been selected for multiple significant government contracts

• We actively encourage healthy, proactive, and diverse debate internally about what we do and how we choose to do it. Teams and individual engineers are trusted (and encouraged) to practise responsible autonomy and critical thinking, and to focus on outcomes, not conformity. At Helsing you will have a say in how we (and you!) work, the opportunity to engage on what does and doesn’t work, and to take ownership of aspects of our culture that you care deeply about

What we offer

• Competitive salary and VSOP options

• Relocation support: up to €2,500 and 4 weeks' temporary accommodation

• Learning: €500/£450 yearly allowance

• Health & wellness: gym membership and mental health support (Nilo.health)

• Social: regular company events and monthly social allowances

• Enhanced parental leave: 22 weeks fully paid for primary caregivers and 6 weeks for secondary caregivers

• Family support: 5 days of paid family emergency leave, 100% remote work option during pregnancy, and phased return to work

Helsing is an equal opportunities employer. We are committed to equal employment opportunity regardless of race, religion, sexual orientation, age, marital status, disability or gender identity. Please do not submit personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, data concerning your health, or data concerning your sexual orientation.

Who we are

The role

The day-to-day

Own the Production Pathway:

• Ensure every design decision accounts for manufacturing, assembly, and test from the outset, so that unit 37 can be built identically to unit 1

• Own design documentation, version control, and assembly instructions to a standard complete enough for someone outside the room to build from

• Support supplier selection and qualification, identifying volume-available components, custom-development requirements, and single-source risks that could affect programme delivery

• Drive the transition from engineer-built prototype to a fully documented, production-ready build across the 40-unit programme

Drive Integration & Testing:

• Lead the integration of all subsystems, including the flight-controller board, edge compute, hydrophone array, satcom, network router, and sensor suite, ensuring each interface is clearly defined and validated

• Coordinate with the Software Tech Lead to ensure the on-glider software stack and hardware requirements remain mutually consistent throughout the development cycle

• Define and execute the test strategy from bench through tank trials to open-water sea trials, capturing findings and iterating the design accordingly

Break Design Deadlocks:

• Apply whole-system UUV knowledge to resolve competing design approaches, drawing on what has been validated at depth and what is known to scale to production

• Assess available options with the information at hand, make well-reasoned calls, communicate the rationale clearly to the team, and keep the programme moving

• Ensure the team's collective expertise in mechanical, electrical, and embedded domains converts into forward momentum

Close the Design:

• Work with the existing technical team to advance Helsing's maritime products from current concept to a fully buildable, producible system

• Own trade-off decisions that span mechanical, electrical, and embedded software boundaries, articulating reasoning with enough clarity to secure team alignment

• Distinguish between designs that are ready to build and those that need further iteration, preventing the programme from stalling in unnecessary refinement cycles

• Embed scaled-manufacturing thinking from the outset, not as a downstream consideration

You should apply if you

• Have built, integrated, tested, and deployed complex electromechanical systems in real operational environments, not in simulation or on paper

• Make systems-level engineering decisions that span mechanical, electrical, and embedded software boundaries with clarity and confidence

• Resolve technical trade-offs under ambiguity, document your reasoning transparently, and bring a multi-disciplinary team to a shared decision

• Have led design reviews and coordinated technical output across engineering teams with different domain specialisms

• Know when a design is ready to build and when it requires further iteration, and have the judgement to act on that distinction

Note: We operate in an industry where women, as well as other minority groups, are systematically under-represented. We encourage you to apply even if you don’t meet all the listed qualifications; ability and impact cannot be summarised in a few bullet points.

Nice to Have

• Direct experience with UUVs, AUVs, or underwater gliders, including buoyancy-driven platforms, variable buoyancy systems, or underwater propulsion

• Familiarity with subsea communications (Iridium SBD), underwater acoustics, or edge compute platforms such as Jetson

• Experience delivering within a defence or defence-adjacent programme, including LARS and vessel operations

Join Helsing and work with world-leading experts in their fields 

• Helsing’s work is important. You’ll be directly contributing to the protection of democratic countries while balancing both ethical and geopolitical concerns

• The work is unique. We operate in a domain that has highly unusual technical requirements and constraints, and where robustness, safety, and ethical considerations are vital. You will face unique Engineering and AI challenges that make a meaningful impact in the world

• Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances in our field of world are not incremental: Helsing is part of, and often leading, historic leaps forward

• In our domain, success is a matter of order-of-magnitude improvements and novel capabilities. This means we take bets, aim high, and focus on big opportunities. Despite being a relatively young company, Helsing has already been selected for multiple significant government contracts

• We actively encourage healthy, proactive, and diverse debate internally about what we do and how we choose to do it. Teams and individual engineers are trusted (and encouraged) to practise responsible autonomy and critical thinking, and to focus on outcomes, not conformity. At Helsing you will have a say in how we (and you!) work, the opportunity to engage on what does and doesn’t work, and to take ownership of aspects of our culture that you care deeply about

What we offer

• Competitive salary and VSOP options

• Relocation support: up to €2,500 and 4 weeks temporary accommodation

• Learning: €500/£450 yearly allowance

• Health & wellness: gym membership and mental health support (Nilo.health)

• Social: regular company events and monthly social allowances

• Enhanced parental leave: 22 weeks fully paid for primary caregivers & 6 weeks for secondary caregivers

• Family support: 5 days of paid family emergency leave, 100% remote work option during pregnancy and phased return to work

• A hands-on onboarding program (affectionately labelled “Infraduction”), in which you will be building tooling and applications to be used across the company. This is your opportunity to learn our tech stack, explore the company, and learn how we get things done - all whilst working with other engineering teams from day one 

Helsing is an equal opportunities employer. We are committed to equal employment opportunity regardless of race, religion, sexual orientation, age, marital status, disability or gender identity. Please do not submit personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, data concerning your health, or data concerning your sexual orientation.

Who we are

The role

At Helsing we develop and deliver AI-based capabilities and the enabling infrastructure that allow semi-autonomous platforms to localise, navigate, and perceive the world in real time. We build software that is subject to significant and unorthodox technical constraints, must operate in a wide variety of constantly-changing environments, and has to support an ever-growing list of challenging use-cases. What we build ultimately ends up in the hands of real people in high-risk, high-stress situations, so must be both reliable and frictionless. Taken together, this brings a whole host of interesting engineering challenges across a wide variety of fields that you’ll help us solve. To give some examples:

• Distributed systems (e.g., intermittent connectivity and byzantine actors)

• Embedded computing (e.g., resource-constrained compute and reverse-engineering)

• Robotics (e.g., control systems and tasking)

• Networking (e.g., long-range low-bandwidth radios and cross-medium routing)

• Deployment infrastructure (e.g., air-gapped devices and heterogenous fleets)

• Security (e.g., data sharing in low-trust, no-TLS networks and actually-secret data handling)

• Machine learning (e.g., systems for model development, storage, and dissemination)

In several of these areas, we are working near the state-of-the-art; we actively read (and sometimes implement) research papers, and often need to push even further to make theory work in practice. In others, we are applying well-known techniques to real-world situations (with real-world limitations) that have never been used in before, which requires skill, diligence, and honing a deep understanding of the underlying technologies.

The day-to-day

• Review code contributions, proposals, and RFCs from colleagues. At Helsing we strongly believe that unblocking others takes precedence over spending more time on your own work.

• Propose and implement new features, capabilities, algorithms, infrastructure, or even full products across our stack. We encourage our engineers to look beyond their immediate team for missed opportunities, and to speak up when they identify one.

• Become a mentor, find a mentee, and help support and develop our interviewing pipeline. The people make or break the company, and we want as many engineers as possible to be part of fostering and growing the organisation.

• Share your experience and technical know-how with other Helsingers. We host tech talks, get together for smaller “let’s learn together” groups, run topical office hours (e.g., on Rust), etc. to help each other get better with time.

• Maintain our existing software stack, including working with internal and external customers to identify issues, improving operational reliability and performance, and fending off technical debt. The stack is a mix of Rust and Python, with Python mainly living in the ML-heavy sections.

• Further develop our tests and benchmarks, both at the micro and macro level. We operate in a domain where robustness is of the utmost importance, and an extensive and ever-improving test suite is key to achieving that. And without thorough benchmarks, we would be flying blind.

• Present your work at our weekly demo sessions. We want engineers to come together around what they are working on and to feel like they are not endlessly squirrelling away at something that doesn’t matter. To that end, we host (and actively work towards) demo sessions that allow early feedback, celebration of progress, and a better shared understanding of everything that goes on at Helsing.

You should apply if you

• Can write legible, maintainable, and performant code.

• Communicate well in English, both verbally and in writing.

• Enjoy collaborating with others, including reviewing code and pair programming.

• Are comfortable working asynchronously (writing PRs and RFCs, having discussions by email).

• Have backend development experience, ideally with a language like Rust, Java, Go, or C++.

• Are familiar with backend interface tools like REST, GraphQL, gRPC/Protocol Buffers, and Arrow.

• Strive to improve yourself, your peers, and the culture you work in over time.

• Feel like ethical considerations are an inherent part of engineering.

Note: We operate at an intersection where women, as well as other minority groups, are systematically under-represented. We encourage you to apply even if you don’t meet all the listed qualifications; ability and impact cannot be summarised in a few bullet points.

Nice to have

• Rust and Python specifically.

• Container-based and cloud-native application architectures (e.g., Docker, Azure, AWS).

• Metrics tooling (e.g., Prometheus, Grafana, ELK).

• SQL and streaming database systems.

• Routing protocols (e.g., IGP, BGP).

• Cryptographic protocols (e.g., Signal, WireGuard).

• Hardware interfaces (e.g., Arduino).

• Robotics (e.g., control systems).

• Production ML systems.

Join Helsing and work with world-leading experts in their fields 

• Helsing’s work is important. You’ll be directly contributing to the protection of democratic countries while balancing both ethical and geopolitical concerns. 

• The work is unique. We operate in a domain that has highly unusual technical requirements and constraints, and where robustness, safety, and ethical considerations are vital. You will face unique Engineering and AI challenges that make a meaningful impact in the world. 

• Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances in our field of world are not incremental: Helsing is part of, and often leading, historic leaps forward. 

• In our domain, success is a matter of order-of-magnitude improvements and novel capabilities. This means we take bets, aim high, and focus on big opportunities. Despite being a relatively young company, Helsing has already been selected for multiple significant government contracts.  

• We actively encourage healthy, proactive, and diverse debate internally about what we do and how we choose to do it. Teams and individual engineers are trusted (and encouraged) to practise responsible autonomy and critical thinking, and to focus on outcomes, not conformity. At Helsing you will have a say in how we (and you!) work, the opportunity to engage on what does and doesn’t work, and to take ownership of aspects of our culture that you care deeply about. 

What we offer

• A focus on outcomes, not time-tracking

• Competitive compensation and VSOP options

• Relocation support

• Social and education allowances

• Regular company events and all-hands to bring together employees as one team across Europe

• A hands-on onboarding program (affectionately labelled “Infraduction”), in which you will be building tooling and applications to be used across the company. This is your opportunity to learn our tech stack, explore the company, and learn how we get things done - all whilst working with other engineering teams from day one 

Helsing is an equal opportunities employer. We are committed to equal employment opportunity regardless of race, religion, sexual orientation, age, marital status, disability or gender identity. Please do not submit personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, data concerning your health, or data concerning your sexual orientation.

Bolt engineering teams are working on unique product challenges: complex algorithms for demand prediction, optimal real-time pricing, routing, fraud detection, distributed systems and much more. We are now seeking a proactive and detail-oriented Senior QA Engineer to join our team!

With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

We seek a proactive and detail-oriented Senior QA Engineer to join our team. You will be part of a team, collaborating closely with Engineers, Designers, and Product Managers to ensure high-quality outcomes. You will fully own the QA process, drive quality standards and ensure efficient testing practices.

• Assist in testing product features at all stages of development to ensure quality and functionality.
• Perform release testing for our mobile app on both Android and iOS platforms, ensuring a seamless user experience.
• Collaborate closely with Engineers to plan and execute testing strategies, identifying and resolving issues early in the development cycle.
• Work with Engineers, Designers and Product Managers to review features and provide critical feedback for improving product design and usability.
• Support the team in keeping documentation updated and maintaining a healthy, efficient test suite.

• You are experienced with manual testing of mobile applications in both Android and iOS.
• You have experience with REST API testing and a solid understanding of how applications communicate with servers.
• You are familiar with performing release testing in an agile environment with a constant release lifecycle.
• You value a good user experience.
• You enjoy collaborating closely with software engineers and you don't shy away from taking ownership of different tasks and supporting other teams.

Experience is great, but we also look for drive, intelligence, and integrity. So, even if you don’t tick every box, please consider applying if you feel you’re the kind of person described above!

• Play a direct role in shaping the future of carsharing.
• Impact hundreds of thousands of customers and partners in 20+ cities across 7 countries.
• Work in fast-moving autonomous teams with some of the smartest people in the world.
• Accelerate your professional growth with unique career opportunities.
• Get a rewarding salary and stock option package that lets you focus on doing your best work.
• Enjoy the flexibility of working in a hybrid mode with at least 3 days in the office each week to foster strong connections and teamwork.
• Take care of your physical and mental health with our wellness perks.

*Some perks may differ depending on your location and role.

Bolt engineering teams are working on unique product challenges: complex algorithms for demand prediction, optimal real-time pricing, routing, fraud detection, distributed systems and much more. We are now seeking a proactive and detail-oriented Senior QA Engineer to join our team!

With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

We seek a proactive and detail-oriented Senior QA Engineer to join our team. You will be part of a team, collaborating closely with Engineers, Designers, and Product Managers to ensure high-quality outcomes. You will fully own the QA process, drive quality standards and ensure efficient testing practices.

• Assist in testing product features at all stages of development to ensure quality and functionality.
• Perform release testing for our mobile app on both Android and iOS platforms, ensuring a seamless user experience.
• Collaborate closely with Engineers to plan and execute testing strategies, identifying and resolving issues early in the development cycle.
• Work with Engineers, Designers and Product Managers to review features and provide critical feedback for improving product design and usability.
• Support the team in keeping documentation updated and maintaining a healthy, efficient test suite.

• You are experienced with manual testing of mobile applications in both Android and iOS.
• You have experience with REST API testing and a solid understanding of how applications communicate with servers.
• You are familiar with performing release testing in an agile environment with a constant release lifecycle.
• You value a good user experience.
• You enjoy collaborating closely with software engineers and you don't shy away from taking ownership of different tasks and supporting other teams.

Experience is great, but we also look for drive, intelligence, and integrity. So, even if you don’t tick every box, please consider applying if you feel you’re the kind of person described above!

• Play a direct role in shaping the future of carsharing.
• Impact hundreds of thousands of customers and partners in 20+ cities across 7 countries.
• Work in fast-moving autonomous teams with some of the smartest people in the world.
• Accelerate your professional growth with unique career opportunities.
• Get a rewarding salary and stock option package that lets you focus on doing your best work.
• Enjoy the flexibility of working in a hybrid mode with at least 3 days in the office each week to foster strong connections and teamwork.
• Take care of your physical and mental health with our wellness perks.

*Some perks may differ depending on your location and role.