LSEG

Senior Full Stack FinOps Engineer

Romania · Work style not stated · Full time

Apply on the employer’s site ↗See how well you match this job

You apply directly with the employer. ROLIVA does not submit applications from this page and is not the employer.

About the role

Description from the employer’s posting. Check the employer’s page for the current version.

  • EmployerLSEG
  • LocationRomania
  • Work styleWork style not stated
  • Employment typeFull time
  • Employer posted

We engineer the core services and experiences of a next-generation multi-cloud FinOps platform—turning TB-scale billing/usage data into trusted, fast, explainable cost intelligence that enables allocation, optimization, and operational accountability.

You’ll own architecture and critical components end-to-end (ingestion → normalization → analytics → APIs → UI), raise engineering standards, and partner closely with FinOps practitioners and product leadership to ship measurable impact.

What Success Looks Like (Performance Objectives)
1) Multi-Cloud Ingestion (E.g. AWS / Azure / GCP)

Within 180 days, we will deliver ingestion services that process high-volume billing data with clear SLAs.

Key outcomes

AWS ingestion supports CUR files in S3, Cost Explorer APIs, Cost Categories, RI/Savings Plans coverage.

Azure ingestion supports Cost Management exports/APIs, EA/billing constructs where applicable.

Show full description

GCP ingestion supports BigQuery billing export tables and relevant cost APIs.

Ingestion can handle TB-scale datasets with partitioning/compaction strategies and repeatable backfills.

Data quality checks and lineage are built-in (schema drift detection, late-arriving data handling, idempotency).

Success measures

≥ 99% ingestion job success rate (or agreed SLA)

Known error budget and automated retries/alerts

Backfills complete within agreed time windows

Cost data freshness targets are met (e.g., daily/hourly depending on provider constraints)

2) Unified Cost Data Model & Normalization

Within 6-9 months, we continue the story with the ability to deliver a normalized, cross-cloud cost model enabling allocation and analytics consistency.

Key outcomes

A unified schema that resolves cross-cloud differences (accounts/subscriptions/projects, resource identity, usage types).

Support for allocation via tags/labels, custom dimensions, shared cost modeling, and business mappings.

A detailed semantic layer (definitions for amortized vs. blended, commitment allocation, etc.).

A versioned approach for schema evolution and backward compatibility.

Success measures

Allocation accuracy validated with FinOps customers

Clear “source of truth” definitions and reconciliation process

Schema changes do not break downstream dashboards/queries

3) High-Performance Analytics Engine (Interactive + Explainable)

Within 9–12 months, we will enable fast queries for “where did the spend go?”

Key outcomes

Analytics pipelines optimized for interactive exploration (e.g., drill-downs, group-by dimensions, cost drivers).

Support for anomaly detection workflows (rules-based and/or ML-assisted is a plus).

Query patterns built for performance at scale (partitioning, clustering, materialization strategy).

Integration with warehouse/Lakehouse depending on your stack.

Success measures

Key dashboards load within target latency (e.g., <2–5 seconds for common views)

Defined SLAs for compute cost, query performance, and data freshness

Reduction in support critical issues tied to data discrepancies

4) Product-Grade Full Stack Delivery (Backend + UI)

Within 90–180 days, end-user capabilities will be shipped to accelerate FinOps workflows.

Key outcomes

Backend services in Python, expose stable APIs for analytics and allocations.

TypeScript UI (React/Next.js) supports high-performance tables, explorers, and filters.

Reusable API patterns and consistent contract/versioning.

Thoughtful UX for FinOps use cases: allocation review, cost driver exploration, commitment coverage insights.

Success measures

Feature adoption and repeat usage in pilot teams

Reduction in manual reporting effort for FinOps teams

Performance benchmarks meet agreed targets

5) Engineering Standards, Reliability & Cost Efficiency!

Ongoing, we will raise the platform bar across security, observability, and operational perfection.

Key outcomes

Standards for microservices, API architecture, data modeling, distributed system patterns.

Observability: tracing/logging/metrics, SLOs, alerting, on-call readiness where applicable.

Security and governance appropriate for billing and usage data (RBAC, audit, encryption, least privilege access).

Cost-aware engineering: FinOps principles applied to the platform itself.

Success measures

Production incidents reduced over time, with blameless postmortems and preventive action

Infrastructure costs supervised and optimized with clear ownership

Engineering guidelines accepted by the team and reflected in PR quality

Your Core Responsibilities (What You’ll Do)

a) Architect and build ingestion, normalization, and analytics components for multi-cloud billing data.

b) Lead reviews and establish engineering practices for reliability, scalability, and cost efficiency.

c) Deliver high-quality backend services and modern UI experiences for FinOps users.

d) Partner with FinOps Reporting and Analytics, Product, and Cloud Engineering to build roadmap and ensure correctness.

e) Mentor engineers through code reviews, pairing, design guidance, and technical standards.

The Environment (Representative Tech Stack)

(We care more about your ability to engineer outcomes than exact tool matches.)

  • Languages: Python, TypeScript
  • Backend: FastAPI / Flask / Django; microservices; event-driven patterns.
  • Data/Compute: Spark/PySpark/Dask; serverless ETL (Glue/Synapse/Dataflow)
  • Storage/Warehouse: Snowflake, BigQuery, Redshift, Synapse; Lakehouse patterns
  • Infra: Docker/Kubernetes; IaC (Terraform/CDK/Pulumi)
  • Observability: OpenTelemetry-style tracing, metrics/logs, SLOs
  • Clouds: Cloud billing constructs and APIs

Candidate Profile (Evidence of Comparable Accomplishments)

You’re likely a strong fit if you’ve done several of these:

a) Develop production ingestion pipelines for large datasets (TB-scale or high-frequency) with quality controls and SLAs.

b) Crafted multi-tenant or multi-account analytics platforms with consistent schemas and performance constraints.

c) Implemented cost/usage analytics or similar domains (telemetry, observability, billing, metering, FinOps, data platforms).

d) Shipped full stack features: APIs + UI that users rely on daily (not just prototypes).

e) Led architecture decisions and influenced standards across a team (architecture design documents, reviews, migration strategy).

f) Worked with CUR/exports, commitment models, allocation, tagging/labels, reconciliation.

Critical Proficiencies (What “Extraordinary” Looks Like in the Role)

1. Systems thinking: sees end-to-end flow and optimizes for reliability + cost + usability.

2. Data correctness perspective: makes data credible, explainable, and defensible.

3. Product engineering: builds for users, not just infrastructure.

4. Pragmatic architecture: chooses simple, scalable approaches; avoids over-engineering.

5. Influence & mentorship: improves via coaching, standards, and streamlined communication.

Career Stage:

Manager

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.

Staying safe while you apply

  • Never pay to apply, interview or accept an offer. ROLIVA never asks you for payment to apply to a job.
  • Apply only through the official “Apply on the employer’s site” button, on the employer’s own site, and check that a recruiter’s email uses that employer’s own domain rather than a free email address.
  • Be cautious of an offer made with no real interview, or pressure to decide quickly or share financial details early.

Does something look wrong with this listing? Use “Report broken link” in the role details, or read ROLIVA’s full job-safety guidance ↗.

Preparing for this role with ROLIVA

  • Check the fit.

    Compare the requirements with the experience you have confirmed, including gaps.

  • Prepare honestly.

    Build interview stories and application drafts from your own evidence.

  • Keep track.

    Save the role and record your own application status and follow-ups.

Create a free workspace or log in.

At a glance

  • Employment typeFull time
  • SenioritySenior
  • Employer posted
  • Added to ROLIVA
  • Last checked

Skills in this posting

Skills ROLIVA found in the employer’s own description above. A mention is not a requirement.

Python Snowflake BigQuery AWS GCP Azure Kubernetes Docker Terraform React TypeScript Spark

Explore similar roles

Similar jobs

LSEG

Senior AI Engineer

Philippines

Work style not statedFull time