Senior Software Development Engineer in Test

LSEG · Bucharest Romania

Salary not stated · Compare with UK Software Engineer pay →

Full-timeSeniorAug 2026 · checked today

About Us

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific.

Role Description

We are looking for a Software Development Engineer in Test to develop and execute manual and automated tests to ensure product quality. Responsibilities include designing and implementing tests, debugging and defining corrective actions. You will also review system requirements and track quality assurance metrics (e.g. defect densities and open defect counts.). Our ideal candidate will be responsible for conducting tests before product launches to ensure software runs smoothly and meets client needs, while being cost-effective. If you hold an engineering background and enjoy predicting and therefore helping to prevent issues in software, we’d like to meet you.

Ultimately, you should be able to monitor all stages of software development to identify and resolve system malfunctions to meet quality standards.

Key Responsibilities

Review requirements, specifications and technical design documents to provide timely and meaningful feedback

Create detailed, comprehensive and well-structured test plans and test cases

Estimate, prioritize, plan and coordinate testing activities

Design, develop and execute automation scripts using open source tools

Identify, record, document thoroughly and track bugs

Perform functional and performance testing

Perform thorough regression testing when bugs are resolved

Use of AI for efficiency in achieving most responsibilities

Develop and apply testing processes for new and existing products to meet customer needs

Liaise with internal teams (e.g. developers and product managers) to identify system requirements and gaps in requirements

Stay up-to-date with new testing tools and test strategies

Candidate Profile / Key Skills

Mandatory:

BS/MS degree in Computer Science, Engineering or a related subject

Strong Python development skills

A solid Unix background

Solid knowledge shell scripting:  bash, ksh, sh

Hands-on experience with automated testing tools such as Robot Framework

Experience with source code management systems such as Git or CVS is a must

A.I. skills to implement testing for improved code coverage

Proven work experience in software quality assurance

Strong knowledge of SDLC

Nice to have:

Experience altering, building, running code written in C, C++, C# and/or Java is a plus

Experience with valgrind or JProfiler is a plus

Experience with wireshark, tcpdump or other network/protocol monitoring tools

General protocol knowledge, knowledge of middleware and/or networking principles is a plus

Experience with testing in AWS, CI/CD is a plus

Experience with encryption/decryption and proxy setup is a plus

Experience working in an Agile/Scrum development process

Experience with test case management tools and bug/task tracking systems

Experience with Jira, Confluence, TestRail is a plus

Experience in writing clear, concise and comprehensive test plans and test cases

Hands-on experience with both white box, black box, functional, stress and load testing of products

Experience with performance and/or security testing is a plus

Benefits

We are looking for intellectually curious people, passionate about the bigger picture of how technology industry is evolving, ready to ask difficult questions and deal with complicated scenarios! If you are creative and a problem solver, this is the place to be as will be supporting you to fast-forward your career!

We maximise each employee’s potential through personal development through a wide range of learning tools both formal and informal. We believe in remunerating our people with competitive salaries and a range of attractive benefits such as:

  • 25 days’ holiday per year
  • 1 additional day off for your Birthday
  • Annual wellness allowance
  • Share Purchase Plan
  • Medical Health Insurance
  • Medical Subscription (preventive medical services)
  • Dental Coverage
  • Life insurance
  • Pillar 3 Private Pension
  • Meal Vouchers
  • Flexible Benefits
  • Bookster
  • Volunteering Events
  • All LSEG colleagues with at least one year’s continuous service, who become parents, are now entitled to at least 26 weeks’ paid leave, and the option to return to work on a phased basis, in relation with specific company’s policy and guidelines

Career Stage

Senior Associate

London Stock Exchange Group (LSEG) Information

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

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