Our SRE teams are dealing with a range of different challenges, from managing our services that keep Bolt backend services running to optimizing our cloud infrastructure.

The SRE Database Reliability team plays a foundational role across all Bolt’s business verticals, directly impacting the quality, resilience, and performance of all services and product lines at scale. Working with a cutting-edge distributed database stack, the team operates in a high-load, high–data-volume environment where each member can make a significant, company-wide impact.

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, age, or disability.

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

As a Senior Site Reliabiity Engineer at Bolt you will lead the design, implementation, and maintenance of highly reliable and scalable systems infrastructure, collaborating with cross-functional teams to ensure system reliability, performance optimization, and continuous improvement.

• Leading the design, implementation, automation and maintenance of highly reliable and scalable Database Systems infrastructure. Planning for future database growth and scalability, ensuring the architecture supports business needs.
• Participating in on-call activities for the most critical parts of the infrastructure, helping to solve incidents in a no-blaming culture.
• Performing Root Cause Analysis (RCA) and leading incident response by compiling thorough postmortems and implementing preventive measures. Identifying performance bottlenecks and inefficiencies in the system and implementing solutions to optimize database configurations and performance, including SQL queries and indexes optimization.
• Ensuring all core services are properly measured, monitored, and covered by alerting systems.
• Work closely with engineering teams to design efficient schemas, perform query reviews, and provide guidance on database best practices.
• Enforcing security best practices, managing access controls, and ensuring compliance with data governance policies and industry standards.

• You have proven track record in systems engineering.
• Solid experience with Relational Database Management Systems (e.g. MySQL). Knowledge of NewSQL and NoSQL Databases is beneficial.
• Strong Linux troubleshooting expertise (including networking, file systems, security and the kernel), as well as a solid understanding of large-scale distributed systems.
• Proficient coding skills (preferably Python, Go, Rust or Bash), along with experience in cloud platforms (e.g., AWS) and infrastructure automation tools such as Terraform and Ansible. 
• Good understanding of DevOps practices and Agile (e.g., Scrum) way of working.
• You are a team player with a high level of empathy and good communication skills, who works well with others in the group and the rest of organization.

Experience is great, but we really 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!

• Accelerate your professional growth with unique career opportunities.
• Enjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you.
• Take care of your physical and mental health with our wellness perks.
• Celebrate 5 years at Bolt with a 1-month paid sabbatical to recharge.
• Connect with colleagues at annual company events and smaller team gatherings.
• Balance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days.

*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. Volumes are constantly growing.

Our SRE teams are dealing with a range of different challenges, from managing our services that keep Bolt backend services running to optimizing our cloud infrastructure.

The SRE Platform team is responsible for ensuring the reliability, availability, and scalability of Bolt's backend services.

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, age, or disability.

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

Our Site Reliability Engineers in the Platform team are working towards making sure we build up an ever more resilient and scalable platform for engineering teams to build on top of.

• Developing automation and implementing internal systems.
• Participating in architectural discussions to select the best long-term solution and collaborating with other SRE Engineers and Software Engineers.
• Implementation of new systems and tuning of existing ones to enable better reliability, availability, scalability, or reduce costs.
• Troubleshooting production system issues.
• Making sure all main services are measured, monitored, and covered by alerting systems.
• Participating in on-call activities for the most critical parts of the infrastructure, helping to solve incidents in a no-blaming culture.

• You have in-depth knowledge of Linux troubleshooting, including networking, filesystems, security, and the kernel.
• You have a solid understanding of large-scale distributed systems.
• You are experienced with AWS services, such as EC2 and EKS.
• You have experience with infrastructure automation tools, such as Terraform and Ansible.
• You are a team player, with good communication skills, that works well with others in the group and the rest of the organization.

Experience is great, but we really 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!

• Accelerate your professional growth with unique career opportunities.
• Enjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you.
• Take care of your physical and mental health with our wellness perks.
• Celebrate 5 years at Bolt with a 1-month paid sabbatical to recharge.
• Connect with colleagues at annual company events and smaller team gatherings.
• Balance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days.

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

Who we are

The role

Software only matters when it is actively being used and making a difference. As a Deployed AI Engineer, you will be at the heart of this - taking state-of-the-art software and integrating it into complex systems. You will be defining and executing against the end-to-end outcome and all steps on the way to delivering novel capabilities in some of the most challenging environments around.

For example: you collaborate directly with customer avionics engineers to understand the data structures and APIs used in aircraft mission control systems. Instead of being scared, you embrace the complexity of unfamiliar databases, APIs, or network protocols; you dig into the specification and use your creativity and ingenuity to implement adapters for integrating them with Helsing’s cloud infrastructure. By working closely with our partners and customers (both metaphorically and quite literally), you continuously evolve, improve, and operate Helsing software. You own the outcome end-to-end.

The day-to-day

In close collaboration with our product teams, you will discover and formalise customer requirements, identify bugs, and ship the latest features directly to our users. Technology demonstrations are our chance to shine - you will coordinate between customers, partners, and Helsing engineers to showcase Helsing’s software and AI capabilities in simulations or with real systems.

You should apply if you

• Have a degree in computer science, software engineering, electrical engineering, or other relevant fields.

• Have a broad understanding and creative use of computer systems; this is the Swiss army knife in Helsing’s toolbox of world-class talent.

• Prefer asking questions over stipulating answers.

• Love figuring things out, digging deeper and deeper into unfamiliar systems until it finally clicks, and you understand how they work.

• Are not afraid of legacy systems and would rather make them work than give up and try to rewrite it all.

• Are comfortable with scripting languages such as Bash or Python and have experience with software engineering in C++, Java, Rust, or similar.

• Can navigate and configure Linux systems and have an understanding of network stacks and database systems.

• If applying for Germany- it is a requirement that you are able to speak business level or fluent German

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

• Experience with Rust and Python.

• Experience with container-based, cloud-native and edge application architectures.

• Experience with maintaining and operating production systems using Prometheus, Grafana, ELK, or similar.

• Experience with SQL, NoSQL, and streaming database systems.

• Experience with production ML systems.

• Bonus points: you have professional experience working in a defence context.

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.

Inbank is a financial technology company with an EU banking license that connects merchants, consumers, and financial institutions on its next-generation embedded finance platform. Our financing solutions are embedded seamlessly into the shopping journey of 6,000+ retailers. This helps our merchant partners grow their businesses, while end customers benefit from a frictionless shopping experience wherever they are. With a focus on innovation and growth, we are looking for talented people to join our team of 440+ working across our offices in Estonia, Latvia, Lithuania, Poland, and the Czech Republic.

We’re looking for an enthusiastic Security Engineer Intern to join our team in Tallinn. 

In this hands-on role, you will work alongside engineers to strengthen the security of our systems and development practices, gaining practical experience across product development, operations, and internal processes. If you’re interested in software development, infrastructure, or cybersecurity and want to build real-world experience in a fintech environment with guidance from experienced colleagues, this role is for you.

What will you be doing?

• Assist with security checks and improvement initiatives across applications, systems, and internal processes.
• Support secure development practices by reviewing findings, documenting risks, and following up on fixes.
• Contribute to access management, monitoring, and other operational security tasks.
• Collaborate with engineers to understand system architecture and identify security improvement opportunities.
• Participate in team planning and collaborate with both technical and non-technical stakeholders.

 Ideally, you:

• Have a basic understanding of programming, scripting, or software development concepts.
• Are familiar with Git, APIs, Linux/command line, cloud environments, or microservices architecture (considered an advantage).
• Have a strong interest in application and infrastructure security.
• Demonstrate curiosity and a willingness to learn new technologies and explore how systems work.
• Show a proactive, problem-solving mindset with a desire to continuously develop your skills.
• Have strong written and verbal communication skills in English.

What you’ll get in return?

• An opportunity to learn from a diverse group of people who excel at what they do.
• A paid internship from June to August.
• A personal mentor — an experienced professional you can always reach out to.
• Opportunities to expand your professional network and take part in events for our interns.

This is an excellent opportunity to gain real-world experience, work on impactful initiatives, and grow professionally. Ready to kick-start your career? Apply now!

When submitting your application, please ensure your CV is in English.