S

Septeo

Vertical legal and real estate software

Backend & Data Engineer

Full-Time
No salary listed
Senior
Valbonne, France
Hybrid
Software EngineeringBackend Engineering

About the job

Requirements
  • At least 5 years of experience in backend development or as a Data Scientist.
  • Proficiency in Kotlin and good knowledge of PostgreSQL and PostGIS.
  • Ability to design REST APIs and process large data volumes.
  • Experience with data pipelines, including ingestion, cleaning, and transformation of large data volumes.
  • Knowledge of Docker, GitLab CI, and security best practices.
  • Rigor, autonomy, and comfort taking over existing code.
Responsibilities
  • Maintain and evolve the Immosearch backend, becoming a second point of expertise across the full scope.
  • Design and develop new endpoints and a dedicated API for Danim.
  • Manage interface contracts with the partner, including documentation, versioning, and tests.
  • Monitor the performance and quality of exposed data.
  • Maintain updates and reliability of DPE and DVF imports and data pipelines.
  • Correct data and processing anomalies and ensure consistency across sources.
  • Adapt processing to changes in open-data sources, including formats, schemas, and data volume.
  • Optimize PostgreSQL and PostGIS queries and indexes.
  • Fix security vulnerabilities, including those identified by Snyk and penetration tests, and update dependencies.
  • Fix bugs and technically evolve the codebase through refactoring and technical-debt reduction.
  • Maintain and improve CI/CD pipelines using GitLab CI and maintain tests.
  • Provide level 3 support for production incidents.
  • Map the architecture, including components, data flows, module dependencies, and the two database models.
  • Produce and maintain architecture diagrams, runbooks, and deployment and restoration procedures.
  • Build expertise through pair programming, cross-code reviews, and pairing on incidents.
  • Identify and propose simplification projects to make the codebase easier to hand over.
Desired Qualifications
  • Knowledge of Python, TypeScript, Node.js, or Flutter.
  • Experience with geospatial or real-estate data.

About the company

Septeo builds a suite of specialized software for legal and real estate professionals by acquiring top vertical apps and stitching them into a single platform for notaries, lawyers, and property managers in France, with expansion into Europe. Its products integrate niche tools like document management and client relations into a cloud-based workflow that supports end-to-end tasks. It differentiates itself by consolidating multiple focused applications into an integrated ecosystem rather than a single monolithic product, growing through acquisitions and regional expansion. Its goal is to become the leading provider of vertical software for legal and real estate professionals in France and Europe, offering an interconnected toolkit that streamlines professional workflows.

Company Size

1,001-5,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Lattes, France

Founded

1988

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Simplify Jobs

Simplify's Take

What believers are saying

  • Septeo targets over €500 million revenue and about €200 million EBITDA by 2026.
  • stp.one added €550 million scale, 3,600 employees, and pan-European legal distribution.
  • Lexbase enables Septeo Legal in October 2026, bundling research, drafting, and case management.

What critics are saying

  • Integrating stp.one, Lexbase, Backyou, and Adresio strains product teams through 2027.
  • LexisNexis and Wolters Kluwer can undercut Septeo’s legal-content-and-software bundle quickly.
  • If AI drafting commoditizes legal software, Septeo loses pricing power and strategic moat.

What makes Septeo unique

  • Septeo combines vertical software, legal content, and AI for regulated French professions.
  • It owns sticky workflows across notaries, lawyers, property managers, hotels, and student housing.
  • Septeo Hospitality spans 10,000 clients across Europe after Sequoiasoft, Backyou, and Adresio.

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Benefits

  • Meal Benefits
  • Health Insurance
  • Remote Work Options
  • Paid Vacation

Growth & Insights and Company News

Headcount

6 month growth

16%

1 year growth

16%

2 year growth

16%
AURIS Finance
Sep 17th, 2026
Septeo acquires Backyou and completes its software value chain in Hospitality.

Septeo acquires Backyou and completes its software value chain in Hospitality. The Septeo group has announced two acquisitions in quick succession within its Hospitality division, in the space of a single week. Following Backyou, a MICE sales and management platform operating in 32 countries, the group has announced the acquisition of Adresio, a French publisher of management software for student housing. Together, these two transactions complete Septeo Hospitality's software value chain in segments that had until now been insufficiently covered. Analysis by the experts at Auris Finance, an M&A and financial engineering advisory firm. Founded in Lattes, Septeo has established itself as a European publisher of business software that embeds artificial intelligence in the service of regulated professions. The group supports more than 400,000 professionals in sectors such as law, accountancy, real estate, human resources, hospitality and education, and employs more than 3,600 people. It invests more than €100 million each year in research and development, a large share of which is devoted to artificial intelligence. Its Hospitality division, formed in 2023 following the acquisition of Sequoiasoft, now serves more than 10,000 clients across Europe, including hotels, campsites, holiday villages, serviced tourist residences, student housing and senior living residences. Backyou, the missing link in MICE. Announced on 8 September 2026, the acquisition of Backyou brings Septeo Hospitality the sales and management of groups, seminars and events, a segment previously absent from its software value chain. Based in Mâcon, the company has thirteen years' experience and serves more than 2,000 properties across 32 countries. It generates 17% of its business internationally and has posted revenue growth of more than 100% since January 2025. Its team of around thirty employees joins the Septeo Hospitality division, and its chief executive, Antoine de Corson, retains leadership of the company while taking charge of the division's MICE offering. Septeo has chosen to preserve the platform's open model, which will continue to be sold to all hospitality professionals, including those who do not use the group's software. Adresio, a tie-up for student housing. A week later, on 15 September 2026, Septeo announced the acquisition of Adresio, a publisher that has specialised for more than twenty years in management software for student housing. Combined with Resalys, the centralised booking solution already deployed by the group for multi-site operators, this acquisition means Septeo Hospitality now equips more than 150 residences and 30,000 student accommodation units across France and Europe. Adresio brings in-depth expertise in the administrative, tenancy, accounting and regulatory processes specific to medium- and long-stay accommodation. This know-how will enrich the roadmap for Resalys, which for its part covers centralised inventory, multi-brand and multi-country management, and consolidated performance monitoring. As with Backyou, continuity of service and the sector expertise of the Adresio teams are being preserved, while its clients will gradually gain access to the technological capabilities of the Septeo Hospitality ecosystem, notably in payments, business intelligence, automation and artificial intelligence. A segment-by-segment consolidation strategy. Both transactions reflect the same logic: completing, segment by segment, a software value chain that already covered distribution, booking, revenue management, customer relationship management, payments and performance analysis. This has been built through a series of targeted acquisitions, including Cool'n Camp, Witbooking, RevControl Data, Misterbooking and Aquao. With Backyou, Septeo adds the sales and management of groups and events. With Adresio, the group strengthens its position in the European student housing market, driven by growing student mobility, the internationalisation of university pathways and a structural shortage of suitable accommodation. In both cases, the deal reflects a logic of vertical integration rather than simple geographical expansion, with the group seeking to offer broader functional coverage within a single software ecosystem. This momentum illustrates a wider trend in the hospitality software sector, where publishers are seeking to consolidate complete value chains rather than confining themselves to a single link in the customer journey. For mid-sized companies such as Backyou and Adresio, backing from a group with European reach and substantial investment capacity in research and development acts as a growth accelerator, while allowing them to retain their business model and operational autonomy. Its experts at your side. Auris Finance supports business leaders in their mergers and acquisitions and financial engineering transactions. Are you considering a fundraising round, backing from an industrial group, or a sale in the business software or hospitality and travel technology sector? Its teams are on hand to support you.

Mash Media
Sep 8th, 2026
Septeo acquires MICE platform Backyou to strengthen European hospitality offering

French business software publisher Septeo has acquired Backyou, a cloud-based sales and management platform for meetings, incentives, conferences and events (MICE) groups. The acquisition adds what Septeo describes as a missing link to its hospitality software portfolio. Backyou's 30-person team will join Septeo Hospitality, with its technology to be integrated into Septeo's property management and central reservation systems. The platform currently serves over 2,000 properties across 32 countries. Backyou will continue operating as an open platform. CEO Antoine de Corson will lead the company and oversee Septeo's MICE division. The platform offers end-to-end digital workflow management for groups and events, including AI features for sales and operations support. Septeo Hospitality was formed in 2023 following Septeo's acquisition of Sequoiasoft.

L'Usine Digitale
Sep 3rd, 2026
Septeo acquires Lexbase to integrate legal databases and AI into management software

Septeo has acquired Lexbase, a legal information specialist, though the transaction amount was not disclosed. The Montpellier-based company, which provides management software to law firms, will integrate Lexbase's legal databases — including court decisions, legislative texts, and doctrinal articles — into its existing platform. The acquisition comes as AI blurs the boundaries between management software and legal research tools. Septeo plans to launch "Septeo Legal" in October, combining firm management functions with Lexbase's content and AI-powered drafting assistance in a single interface. The deal follows Septeo's €550 million acquisition of German company stp.one in February. Septeo's revenue has grown from €140 million five years ago to an expected €500 million by the end of 2026, with EBITDA approaching €200 million.

Septeo
Feb 27th, 2026
Acquisition of stp.one by Septeo Successfully Completed

You can find more information about what this means for the LegalTech market and for customers here.

TourMag
Dec 8th, 2025
Septeo Hospitality acquires AquaO to expand European wellness market presence

Septeo Hospitality has acquired AquaO, a wellness sector solution provider, as part of its ongoing expansion in the hospitality industry. According to Baptiste de Couëssin, AquaO's director, the acquisition represents "a genuine opportunity" to accelerate the solution's development. The deal adds to a series of acquisitions Septeo has made in the hospitality sector since 2023. The company's portfolio now includes solutions such as Qualitelis, Cool'n Camp, Witbooking, Revenue Pilot, RevControl Data, Misterbooking and Nymphea. De Couëssin stated that together they will "open a new era for the wellness market in Europe". Financial terms of the acquisition were not disclosed.