Senior Data Engineer (Scala/Spark, Databricks)

We are looking for a Data Engineer to join the Platform Engineering team. The team is responsible for supporting, operating, and evolving the data platform used by engineering and data science teams.

Responsibilities

• Partner with engineers across the team to support and improve data platform operations.
• Work closely with Data Scientists to provide technical support and ensure smooth day-to-day platform usage.
• Establish and improve processes related to platform stability, reliability, and maintainability.
• Support Spark infrastructure and ensure efficient execution of large-scale data processing jobs.
• Contribute to observability, monitoring, alerting, and on-call processes.
• Help maintain data platform components across Kubernetes, Airflow, Trino/Presto, and related infrastructure.

Requirements

• Strong experience with CI/CD pipelines.
• Strong experience with Python.
• Experience with Spark infrastructure and large-scale data processing.
• Background in distributed systems.
• Experience with Kubernetes resource management.
• Understanding of authentication, data governance, and platform security concepts.
• Familiarity with file compaction and maintenance on HDFS and/or object stores.
• Solid understanding of data engineering fundamentals, including partitioning, schema design, type safety, and table formats such as Iceberg and Hive.
• Experience with observability and monitoring tools such as Prometheus, Grafana, OpenTelemetry, and alerting systems.
• Strong collaboration skills and ability to work effectively in a cross-functional team.
• Availability to join evening calls (till 21:00)

Nice to have

• Scala experience.
• Previous on-call experience in a data platform or infrastructure environment.

We offer

• Opportunity to work on bleeding-edge projects
• Work with a highly motivated and dedicated team
• Competitive salary
• Flexible schedule
• Benefits package - medical insurance, sports
• Corporate social events
• Professional development opportunities
• Well-equipped office

About Us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

We power people’s progress.
At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Every Preply lesson sparks change, fuels ambition, and drives progress that matters. Joining Preply means helping define the future of education at global scale, and building something that truly matters for millions of people, every day.

Meet the team!
Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired.

The
Preply Engineering Team
provides the tools to help unlock human potential through learning. We implement A/B tests to prove the value of our initiatives and improve our product based on data and students' and tutors' feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best.

As a Senior II Backend Engineer,
you'll drive technical direction across multiple squads, lead high-impact initiatives, and build the systems that power Preply's global growth engine. Your work will influence how we scale our platform, align teams around shared outcomes, and help millions of learners connect with tutors worldwide.

Python is our primary language, but prior experience with it isn't mandatory. We take a tech-agnostic approach and welcome engineers from various backgrounds, such as Java, Node.js, Ruby, Scala, .NET, PHP, or Go. What we truly look for is an eagerness to learn the language and the adaptability to hit the ground running with product development.
What You’ll Be Doing

• Own, shape, and drive technical direction across multiple engineering squads.
• Lead complex, ambiguous initiatives from idea to delivery, aligning engineers, teams, product managers, and stakeholders around shared outcomes.
• Design, build, and evolve scalable backend systems using Python/Django, data pipelines, and third-party integrations that support long-term business growth.
• Partner with PMs, EMs, and senior stakeholders to shape roadmaps, make technical trade-offs, and guide investment decisions.
• Raise the engineering bar through mentoring, architectural reviews, and engineering best practices.
• Drive reliability, observability, performance, and operational excellence across multiple services and teams.
• Foster a quality-first culture through automation, documentation, and continuous improvement.
• Participate in on-call rotation (1 week every 5 weeks).

What You Need To Succeed

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Proven experience leading complex, greenfield projects end-to-end
• A track record of shaping architectural decisions and setting engineering standards that impact multiple teams or domains.
• Comfort with shaping product scope, challenging requirements, and focusing on customer value.
• Strong communication (English level B2+) with the ability to influence senior peers and leadership through clear reasoning and strong technical judgment.
• Willingness to join your team's on-call rotation (1 week out of every 5).

Why you’ll love it at Preply

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budget and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;
• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.
• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

Diversity, Equity, and Inclusion
Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

Danish Refugee Council (DRC)
is a leading protection agency with a mandate to protect, advocate and promote durable solutions for displacement affected populations.

DRC has been operating in Ukraine since 2014, currently DRC employs over 800 staff in Ukraine and implements emergency response in the Protection, Livelihoods, Shelter/NFIs and Humanitarian Disarmament and Peacebuilding (humanitarian mine action) sectors, using direct interventions, support to duty bearers and civil society organizations (CSOs), and partnerships with CSOs. DRC will continue and adapt its durable solutions portfolio to the evolving context.

DRC is currently looking for a
Information Management Officer
in
Kyiv
.

About The Job
The Information Management team is focused on developing information management systems based on the ESRI ArcGIS Online platform, with a planned migration to ArcGIS Enterprise. The team works with various applications within the ArcGIS ecosystem, including Survey123, Field Maps, Dashboards, and Experience Builder. The successful candidate will join the Information Management team and contribute to the development, configuration, and enhancement of different components of the information management systems within the ArcGIS environment. The role also involves supporting the integration and maintenance of these systems to ensure their effective operation.

Your main duties and responsibilities will be:

• Development of effective data collection tools and methodologies, as well as the design and management of database systems for data management and analysis.
• Maintenance and administration of the DRC beneficiary database.
• Implementation of functional features and user interfaces, such as dashboards and databases.
• Collaborate with other departments to improve the product on their feedback.
• Support Team Leaders in technical application of the database in instances where the data entry is undertaken by programme staff.
• Support programme colleagues in case of any technical difficulties or questions regarding the database and IM in general; provide trainings for colleagues on how to use the database.
• Ensure information regarding beneficiaries is consolidated into one database and is up-to-date; identify missing data and follow up with Team Leaders.
• Support in providing beneficiary lists and data for monitoring activities, including PDM and evaluation reports.
• Apply data program techniques and procedures.
• In line with DRC’s Information Management SoPs, keep all data protected and confidential.

About You
To be successful in this role we expect you to have
a
t least 2 years of experience in developing data collection and analysis tools within the Esri / ArcGIS Online environment
.
Moreover, we also expect the following:

Required

• University degree in Information Technology, Information Systems, Statistics, Social Sciences or a relevant field.
• Knowledge of Survey123, or other data collection applications.
• Advanced level of English language proficiency; Fluency in Ukrainian.
• Confident user in MS Word, Excel, PowerPoint and Outlook.
• Proven abilities in data collection, compilation, analysis and reporting with ability to write in a clear and concise manner and effective oral communication.
• Proficiency in ArcGIS Dashboard and Experience Builder will be considered an advantage is a key requirement.

In this position, you are expected to demonstrate DRC’ five core competencies:

• Striving for excellence: You focus on reaching results while ensuring an efficient process.
• Collaborating: You involve relevant parties and encourage feedback.
• Taking the lead: You take ownership and initiative while aiming for innovation.
• Communicating: You listen and speak effectively and honestly.
• Demonstrating integrity: You uphold and promote the highest standards of ethical and professional conduct in relation to our values and Code of Conduct, including safeguarding against sexual exploitation, abuse and harassment.

We offer

• Contract length: 3-month probation period, with the possibility of extension subject to performance.
• Band: H – non-manager.
• Designation of Duty Station: Kyiv.
• Start date: as soon as possible.

Salary and conditions will be in accordance with Danish Refugee Council’s Terms of Employment for employees on national contracts; starting from
2025 EUR gross
per month (depending on experience and qualifications).

Application process
All applicants must upload a cover letter and an updated CV (no longer than four pages) in English.

A
pplications sent by email will not be considered.
Closing date for applications: 22 August
, 2026
.

We are looking for a developer who possesses strong experience in Oracle SQL and PL/SQL with Exadata and have experience in report building.

BI reporting unit is one of the units of the IT Departmen at the Kyivstar Tech.

We help businesses to timely and accurately assess the dynamics of development, monitor indicators and plans.

The unit works with internal business customers. We have a friendly team and a strong team spirit. If you have a desire to work with big data, improve yourself as a report developer, including visualization, help businesses with daily analytics - we will be glad to meet you!

About Us
Kyivstar.Tech is a Ukrainian hybrid IT company and a resident of Diia.City. We are a subsidiary of Kyivstar, one of Ukraine’s largest telecom operators.

Our mission is to change lives in Ukraine and around the world by creating technological solutions and products that unleash the potential of businesses and meet users’ needs.

Over 600+ KS.Tech specialists work daily in various areas: mobile and web solutions, as well as design, development, support, and technical maintenance of high-performance systems and services.

We believe in innovations that truly bring quality changes and constantly challenge conventional approaches and solutions. Each of us is an adherent of entrepreneurial culture, which allows us never to stop, to evolve, and to create something new.

What You Will Do

• Working with databases: import / export of data, preparation of reports and data queries using PL/SQL
• Working with data sets, data quality analysis
• Creating analytical reports and dashboards
• Reports visualization in in Power BI Desktop and Report Builder environments
• Analyzing business requirements and communication with internal clients

Qualifications And Experience Needed

• 1+ years of experience in PL/SQL development
• Experience in PL/SQL, creating database tables, views, procedures
• Experience develop reports visualization in Power BI\Report Builder will be priority
• Working knowledge in relational databases and concepts, preferably Oracle
• Highly organized with analytical and reasoning skills to troubleshoot and solve problems
• Ability to use reasoning to troubleshoot, solve, and escalate technical problems
• Be open to learning new tools and technologies
• Ability to work independently and as part of a team

What We Offer

• Office or remote — it’s up to you
• Remote onboarding
• Performance bonuses for everyone (annual or quarterly — depends on the role)
• We train employees: with the opportunity to learn through the company’s library, internal resources, and programs from partners
• Health and life insurance
• Wellbeing program and corporate psychologist
• Reimbursement of expenses for Kyivstar mobile communication

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.