Senior Android Developer


Who we are

At Blankfactor, we are dedicated to engineering impact. We are passionate about creating value by building best-in-class tech solutions for companies looking to transform, innovate, and scale. In every project, we aim to deliver work that moves the needle and drives measurable outcomes for our partners and clients. Our full- stack development, data engineering, digital product, and enterprise AI solutions cater to a range of industries, including payments, banking, capital markets, and life sciences.

We are headquartered in Miami, Florida, have offices in Bulgaria, Colombia and Romania, and are rapidly expanding our global footprint. Our culture of engineering excellence, technical expertise, and care for both our clients and our talented workforce has made us one of the fastest-growing companies in America.

We only hire the best and brightest. If you have talent and ambition, join us and be part of an environment that fosters innovation, collaboration, and growth. Welcome to Blankfactor!

What you will do

We are looking for a Senior Android Developer to join our team in Bulgaria. You will be responsible for designing, integrating and implementing Android applications. As a Senior Android Developer, you identify the client’s specific needs, recommend and implement high-quality solutions using the industry's best practices. You will work closely with other engineering teams of experts passionate about software architecture, optimization, and high-performance solutions. Furthermore, you will be a part of a collaborative, agile, results-driven work culture where diversity is respected and excellence is rewarded.


  • Translate business requirements and use cases into functional applications

  • Design, build, and maintain efficient, reusable, and reliable products

  • Review, test, and verify code for adherence to quality and security standards

  • Ensure the best possible performance, quality, and responsiveness of the applications

  • Identify bottlenecks and bugs, and devise solutions to these problems

  • Assist in the maintenance of code quality and organization

  • Work with development team to define and implement architecture direction

  • Assist in the design and enforce test-driven development using automated unit and integration testing

  • Provide guidance and technical support to other team members

Requirements and technical skills

  • 5+ years of overall experience developing Android applications

  • Solid experience analyzing, designing and implementing solutions using Android Studio in Java and Kotlin

  • Follow agile methodology and experience with conducting code reviews

  • Well versed in OOP and various design patterns

  • Experience with secure software development

  • Experience with high-availability online transaction processin

  • Experience with defining and enforcing coding standard

  • Experience with version control systems, preferably GIT

  • Analytical skills

  • Willingness to learn new technologies

  • In-depth understanding of the entire software development lifecycl

  • Ability to work in a dynamic environment 

  • Proficient English, both written and verbal communication

  • Having a background in the Fintech sector, particularly in areas like SDK development, SoftPOS, POS systems, and EMV specifications, will be considered as an advantage

What we offer

  • Attractive and competitive salary

  • Up to 25 days paid vacation based on seniority level

  • Premium private health insurance coverage

  • Multisport card subscription

  • $500 dedicated self development budget

  • 20 BGN lunch budget when working from the office

  • Fresh fruits and Snacks in the office.

  • Friendly office atmosphere

  • Diverse client portfolio

  • Cutting-edge high-tech stack

  • Fintech Expertise: expertise in machine learning, data science, big data, and AI, driving innovation and cutting-edge solutions

  • Continuous Learning Culture and Support


We believe that diversity of experience and background contributes to more robust ideas and a stronger team. All qualified applicants will receive consideration for employment without regard to religion, race, sex, sexual orientation, gender identity, national origin, or disability.