For our client, a boutique Bulgarian software company, we are looking for a

Backend Developer with Python (Mid level)

to join one of their specialized teams working on a large-scale platform for a leading US construction company.

You will be responsible for building and maintaining custom backend systems for data pipelines and large-scale web scrapers, applied across multiple domains (Projects, Personnel, Contacts, Opportunities, etc.).

The company has offices in Sofia, Germany, and the USA, and works with clients across both Europe and the United States. They provide full-cycle software development, including AI integrations (Gen AI, ChatGPT, Claude), web/mobile applications, and custom data solutions (API, scraping, data processing). The company has been repeatedly recognized as a Clutch Top Web Development Company in Bulgaria.

Position description:

• Design and implement modular ETL tasks through shared base classes for different domains
• Build and maintain backend services for data processing, scraping workflows, checkpoint validation, fingerprinting, and deduplication logic
• Create CI pipelines to trigger builds for specific collectors and data sets
• Develop and optimize collector and transformer jobs for event streams
• Work with large datasets and optimize performance at scale
• Collaborate closely with the team and the client on the design and implementation of new functionalities
• Deliver clean, maintainable, and well-documented code
• Maintain high code quality via SonarCloud, solid test coverage, and low technical debt
• Contribute to improvements in architecture and development best practices

Requirements:

• Solid experience in backend development with Python
• Good working knowledge with TypeScript benefitial
• Experience in building data pipelines (ingestion → processing → storage)
• Understanding of Docker-based development workflows
• Strong knowledge of relational databases (especially PostgreSQL)
• Experience with cloud storage providers (AWS, Azure, GCP)
• Strong analytical mindset and ability to work independently

Nice to have:

• Experience with Kubernetes
• Experience in data processing, large datasets, or ETL pipelines
• Knowledge of scalable and distributed systems

The company offers:

• Competitive salary
• Remote-friendly or hybrid working model (office located in southern Sofia)
• Opportunity to work on meaningful projects for a major US client
• Chance to learn and work with different languages and technology stacks
• Flexible environment where results matter more than bureaucracy

Be part of a small, dynamic team solving significant data infrastructure challenges

If you’re interested, send us your CV and join a team that values clean code, collaboration, and solving complex challenges at scale.

The post Backend Developer with Python appeared first on Recruitment agency Balkaninvest.

For our client, a boutique Bulgarian software company, we are looking for a

Backend Developer with TypeScript (Mid level)

to join one of their specialized teams working on a large-scale platform for a leading US construction company.

You will be responsible for building and maintaining custom backend systems for data pipelines and large-scale web scrapers, applied across multiple domains (Projects, Personnel, Contacts, Opportunities, etc.).

The company has offices in Sofia, Germany, and the USA, and works with clients across both Europe and the United States. They provide full-cycle software development, including AI integrations (Gen AI, ChatGPT, Claude), web/mobile applications, and custom data solutions (API, scraping, data processing). The company has been repeatedly recognized as a Clutch Top Web Development Company in Bulgaria.

Position description:

• Design and implement modular ETL tasks through shared base classes for different domains
• Build and maintain backend services for data processing, scraping workflows, checkpoint validation, fingerprinting, and deduplication logic
• Create CI pipelines to trigger builds for specific collectors and data sets
• Develop and optimize collector and transformer jobs for event streams
• Work with large datasets and optimize performance at scale
• Collaborate closely with the team and the client on the design and implementation of new functionalities
• Deliver clean, maintainable, and well-documented code
• Maintain high code quality via SonarCloud, solid test coverage, and low technical debt
• Contribute to improvements in architecture and development best practices

Requirements:

• Solid experience in backend development with TypeScript
• Good working knowledge with Python benefitial
• Experience in building data pipelines (ingestion → processing → storage)
• Understanding of Docker-based development workflows
• Strong knowledge of relational databases (especially PostgreSQL)
• Experience with cloud storage providers (AWS, Azure, GCP)
• Strong analytical mindset and ability to work independently

Nice to have:

• Experience with Kubernetes
• Experience in data processing, large datasets, or ETL pipelines
• Knowledge of scalable and distributed systems

The company offers:

• Competitive salary
• Remote-friendly or hybrid working model (office located in southern Sofia)
• Opportunity to work on meaningful projects for a major US client
• Chance to learn and work with different languages and technology stacks
• Flexible environment where results matter more than bureaucracy

Be part of a small, dynamic team solving significant data infrastructure challenges

If you’re interested, send us your CV and join a team that values clean code, collaboration, and solving complex challenges at scale.

The post Backend Developer with TypeScript appeared first on Recruitment agency Balkaninvest.

For a long-term outsourcing-project with a German partner we are currently looking for a qualified and motivated

Senior Developer

to join the new Bulgaria-team.

Responsibilities:

• Build great applications with Python for some of the largest German companies
• Collaborate with a dynamic team in Germany and Bulgaria
• Conduct code reviews to ensure quality and scalability

Requirements:

• Minimum of 5 years of experience with Python (after university graduation) for international projects
• Very solid understanding of Python 3 (including testing and documentation)
• Advanced Django skills
• Basic Linux understanding compulsory
• Experience in working with large companies / finance sector would be a plus
• Expertise in additional fields such as network security, loadbalancing, integration and testing of APIs, testing of JavaScript would be a plus
• Strong English communication skills, German not compulsory but a plus

Benefits Include:

• Bulgarian labour contract (option for freelance if preferred – to be discussed)
• Fully remote work (beside of an onboarding-trip to Germany and occasional trainings)
• Competitive salary
• Food vouchers
• Interesting projects for some of the largest companies in Germany with a long-term perspective

This opportunity sounds attractive for you? Then apply with your CV and let´s arrange an interview!

The post Senior Python Developer appeared first on Recruitment agency Balkaninvest.

Our client is an American company operating in the AI field. They use an AI-driven application development platform that enables users—regardless of technical skill—to easily create and scale business solutions. The platform unifies data, automates workflows, and ensures security and governance, helping companies reduce costs, minimize risk, and operate more efficiently.

They are currently looking for a

Junior Developer with first expertise in Python

to join their team.

Responsibilities:

• Build AI-first products using conversational and emerging AI technologies
• Collaborate with a dynamic team to create next-gen AI applications
• Conduct code reviews to ensure quality and scalability
• Share knowledge and best practices to support team growth and innovation

Requirements:

• 1+ years of experience with Python
• Solid software engineering foundations: testing, fault tolerance, design patterns, data structures
• Experience with LLMs and prompt engineering is a big plus
• Passion for learning and staying ahead in tech
• Strong English communication skills
• A strong focus on user experience and product impact
• Revelant university degree or student in last year

Benefits Include:

• Fully remote work
• Competitive salary & annual bonus
• 25 vacation days
• Health insurance
• Food vouchers & wellness allowance
• Opportunities for external learning and development

This opportunity sounds attractive for you? Then apply with your CV together with an actual picture.

The post Junior Python Developer AI appeared first on Recruitment agency Balkaninvest.

Our client is an innovative Sofia-based product company that develops solutions to shape the future of Television on different devices (like Smart TV or Mobile phone). Due to their success and expansion, they are expanding their team and are looking for a motivated

Senior Flutter Developer

for their office in the center of the city.

Your tasks:

• Work on the latest UI with Flutter for both iOS and Android applications
• Create high quality code and keep in mind an architecture that secures future performance and scalability improvements
• You will take responsibility of the code you work on
• Partnering closely with the product manager and keep an eye on your junior colleagues – do not forget to be friendly and helpful with them

Your profile:

• At least 5 years in software development
• A minimum of 3 years of working experience with Flutter
• Familiar with a native SDK (iOS or Android)
• Good understanding of UX standards (ideally platform-native)
• Familiar with languages used in mobile development, e.g. Swift/Objective-C or Kotlin/Java
• You are a team player and appreciate a good working spirit

What our client offers:

• An attractive remuneration
• Flexible working hours
• Remote work is possible, but not 100 percent
• But: during the first months you would be working in their office in the center of Sofia
• Multisport card sponsorship
• Other benefits to assure that you enjoy working in their office
• And a cosy parking slot for your car

If you are looking for a long-term perspective and enjoy to have a real „connection“ to the software products you are working on instead of hopping from one project to another, this is the right job for you! Help Television shine again!

This opportunity sounds attractive for you? Then apply with your CV in English or Bulgarian language together with an actual picture. Only short – listed candidates will be contacted.

Confidentiality of all applications is assured!

The post Senior Flutter Developer appeared first on Recruitment agency Balkaninvest.

Our client is an American company operating in the AI field. They use an AI-driven application development platform that enables users—regardless of technical skill—to easily create and scale business solutions. The platform unifies data, automates workflows, and ensures security and governance, helping companies reduce costs, minimize risk, and operate more efficiently.

They are currently looking for a

Senior Developer with strong expertise in Python

to join their team.

Responsibilities:

• Build AI-first products using conversational and emerging AI technologies
• Collaborate with a dynamic team to create next-gen AI applications
• Conduct code reviews to ensure quality and scalability
• Share knowledge and best practices to support team growth and innovation

Requirements:

• 5+ years of experience with Python
• Solid software engineering foundations: testing, fault tolerance, design patterns, data structures
• Experience with LLMs and prompt engineering is a big plus
• Passion for learning and staying ahead in tech
• Strong English communication skills
• A strong focus on user experience and product impact

Benefits Include:

• Fully remote work
• Competitive salary & annual bonus
• 25 vacation days
• Health insurance
• Food vouchers & wellness allowance
• Opportunities for external learning and development

This opportunity sounds attractive for you? Then apply with your CV together with an actual picture.

The post Senior Python Developer AI appeared first on Recruitment agency Balkaninvest.

Our client is a global leader in retail and hospitality software solutions, specializing in payments and point-of-sale (POS) systems (product company). Operating in over 70 countries, they empower businesses to grow and thrive using innovative technology.

We are currently searching for several

Software Developers

for their new office in Sofia. These roles offer exciting challenges, a collaborative environment, and significant opportunities for professional development.

The engineering team is a diverse, remote-first group that brings together developers, quality assurance engineers, and project managers from various countries and cultures. They play a key role in influencing the company’s software architecture, product roadmap, and day-to-day operations. The company fosters an inclusive and innovative culture, encouraging team members to take initiative, explore new ideas, and make a meaningful impact on both the team and the products they create.

While prior experience with the specific technologies is not essential, candidates should have relevant working experience in software development and a willingness to learn. The primary technologies include:

• Programming Languages: Golang, C#, React (TypeScript)
• Infrastructure: AWS, Terraform, Helm, GitLab for CI/CD

Key Responsibilities:

Depending on your level of experience, your responsibilities may include:

• Participating in technical project planning and execution.
• Writing clean, efficient, and maintainable code.
• Designing, maintaining, and querying SQL and NoSQL databases.
• Documenting technical processes and project details.
• Collaborating with team members and cross-functional departments.
• Contributing to architectural decisions, patterns, and solutions.
• Adapting to new tools, technologies, and programming languages as needed.

Your profile:

The ideal candidate will have:

• Relevant working experience in software development (junior or mid-level).
• Proficiency in writing high-quality code (any programming language).
• Strong communication skills for collaboration across teams.
• A self-motivated, organized, and enthusiastic approach to work.
• Business-level proficiency in English.

Our client offers:

• Flexible working hours to support work-life balance.
• Fully remote role will be possible in the future, but willingness to be at the beginning at least some days per week in their Sofia-office to build-up a team-spirit.
• Transparent career progression framework tailored to your growth.
• Competitive company bonus scheme.
• Access to training, certifications, and events for ongoing professional development.

Whether you’re early in your career or looking to take the next step, this role offers an opportunity to develop your skills, contribute to meaningful projects, and grow within a supportive and innovative company.

The post Software Developer (Golang, C#) appeared first on Recruitment agency Balkaninvest.

Our client is an internationally renowned institution dedicated to providing exceptional mathematics education to students of all ages. It was founded around 30 years ago and proudly educates thousands of students in USA and Canada via online platform. The company uses its own curriculum, developed by their Curriculum teams. With a rich history of fostering mathematical excellence, the firm aims to empower students with the skills and knowledge necessary to excel in mathematics and beyond. They are committed to creating a stimulating learning environment that nurtures curiosity, critical thinking, and problem-solving abilities.

For that goal we are seeking a versatile and dedicated

Java Software Engineer

to join their team in Bulgaria (from their Sofia office, hybrid, or remote).

Responsibilities:

• Write high-quality software code
• Maintain and improve software code
• Monitor system performance
• Test and validate code
• Gather user feedback for program enhancements
• Deploy code in development environments
• Contribute innovative ideas for development improvement
• Learn the codebase and enhance coding skills

Requirements:

• Bachelor’s degree in Computer Science, Engineering, or related field
• Minimum 4 years of previous software development experience in industry
• Proficiency in Linux, SQL (MS SQL), CI/CD tools, and scripting (e.g., JavaScript, PHP, Python)
• Dedication to producing clean, scalable, and high-performing code
• Understanding of the software development life cycle
• Strong problem-solving abilities and intellectual curiosity
• Excellent interpersonal and communication skills
• Effective time management skills

The ideal candidate is a collaborative, hands-on developer with strong Java skills, ideally some cloud-native architecture experience, and a passion for improving K-12 math education.

If you are interested in a meaningful, long-term challenge with a product company, we invite you to apply with your CV!

The post Java Software Engineer appeared first on Recruitment agency Balkaninvest.

Our client is an internationally renowned institution dedicated to providing exceptional mathematics education to students of all ages. It was founded around 30 years ago and proudly educates thousands of students in USA and Canada via online platform. The company uses its own curriculum, developed by their Curriculum teams. With a rich history of fostering mathematical excellence, the firm aims to empower students with the skills and knowledge necessary to excel in mathematics and beyond. They are committed to creating a stimulating learning environment that nurtures curiosity, critical thinking, and problem-solving abilities.

For that goal we are seeking a versatile and dedicated

Senior Java Software Engineer

to join their team in Bulgaria (from their Sofia office, hybrid or remote).

The Senior Java Software Engineer role is ideal for an experienced candidate ready to drive a transition to a cloud-native, microservices-based architecture on AWS for a K-12 math education platform. This role involves adopting modern technologies while ensuring the platform supports versioning, publishing, and deep analytics to enhance student learning.

Mentor your colleagues to build a scalable architecture, promote best practices, and deliver high-quality software in alignment with educational goals.Implement analytics to track student progress and collaborate on math engines for creating, rating, and solving problems, driving adaptive learning features.

Responsibilities:

• Lead the migration to a Java microservices architecture on Kubernetes in AWS, utilizing GraphQL for efficient data handling and Terraform for infrastructure as code.
• Oversee the entire SDLC from planning to CI/CD deployment, ensuring test automation and reliability at scale.
• Cross-Functional Collaboration: Work closely with product and analytics teams, providing clear updates and aligning engineering with the educational mission.

Requirements:

• A stable work history with at least a few periods of 3 years of continuous employment with the same employer in IT industry – mandatory
• Experience in a product software company – mandatory
• 5+ years of Java and Spring Boot expertise for microservices.
• AWS and Kubernetes experience; Terraform for infrastructure automation.
• Proficiency in SQL and ideally Hibernate for data persistence.
• Knowledge of CI/CD and test automation.
• Collaboration and Communication: Strong interpersonal skills to work cross-functionally and influence key stakeholders.

The ideal candidate is a collaborative, hands-on engineering expert with strong Java skills, cloud-native architecture experience, and a passion for improving K-12 math education. You combine technical proficiency with a commitment to mentoring, teamwork, and impactful, mission-driven software development.

If you are interested in a meaningful, long-term challenge with a product company, we invite you to apply with your CV !

The post Senior Java Software Engineer appeared first on Recruitment agency Balkaninvest.

The post Senior Android Developer appeared first on Recruitment agency Balkaninvest.