diff --git a/tasks/dergynov_s_integrals_multistep_rectangle/info.json b/tasks/dergynov_s_integrals_multistep_rectangle/info.json
index 96fbab871..5dfba0a4d 100644
--- a/tasks/dergynov_s_integrals_multistep_rectangle/info.json
+++ b/tasks/dergynov_s_integrals_multistep_rectangle/info.json
@@ -4,6 +4,6 @@
     "group_number": "3823Б1ПР4",
     "last_name": "Дергунов",
     "middle_name": "Антонович",
-    "task_number": "2"
+    "task_number": "3"
   }
 }
diff --git a/tasks/dergynov_s_integrals_multistep_rectangle/tbb/include/ops_tbb.hpp b/tasks/dergynov_s_integrals_multistep_rectangle/tbb/include/ops_tbb.hpp
new file mode 100644
index 000000000..13304a61b
--- /dev/null
+++ b/tasks/dergynov_s_integrals_multistep_rectangle/tbb/include/ops_tbb.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "dergynov_s_integrals_multistep_rectangle/common/include/common.hpp"
+#include "task/include/task.hpp"
+
+namespace dergynov_s_integrals_multistep_rectangle {
+
+class DergynovSIntegralsMultistepRectangleTBB : public BaseTask {
+ public:
+  static constexpr ppc::task::TypeOfTask GetStaticTypeOfTask() {
+    return ppc::task::TypeOfTask::kTBB;
+  }
+  explicit DergynovSIntegralsMultistepRectangleTBB(const InType &in);
+
+ private:
+  bool ValidationImpl() override;
+  bool PreProcessingImpl() override;
+  bool RunImpl() override;
+  bool PostProcessingImpl() override;
+};
+
+}  // namespace dergynov_s_integrals_multistep_rectangle
diff --git a/tasks/dergynov_s_integrals_multistep_rectangle/tbb/src/ops_tbb.cpp b/tasks/dergynov_s_integrals_multistep_rectangle/tbb/src/ops_tbb.cpp
new file mode 100644
index 000000000..1e7ccd152
--- /dev/null
+++ b/tasks/dergynov_s_integrals_multistep_rectangle/tbb/src/ops_tbb.cpp
@@ -0,0 +1,104 @@
+#include "dergynov_s_integrals_multistep_rectangle/tbb/include/ops_tbb.hpp"
+
+#include <tbb/blocked_range.h>
+#include <tbb/parallel_reduce.h>
+
+#include <algorithm>
+#include <cmath>
+#include <cstddef>
+#include <utility>
+#include <vector>
+
+#include "dergynov_s_integrals_multistep_rectangle/common/include/common.hpp"
+
+namespace dergynov_s_integrals_multistep_rectangle {
+namespace {
+
+bool ValidateBorders(const std::vector<std::pair<double, double>> &borders) {
+  return std::ranges::all_of(borders, [](const auto &p) {
+    const auto &[left, right] = p;
+    return std::isfinite(left) && std::isfinite(right) && left < right;
+  });
+}
+
+}  // namespace
+
+DergynovSIntegralsMultistepRectangleTBB::DergynovSIntegralsMultistepRectangleTBB(const InType &in) {
+  SetTypeOfTask(GetStaticTypeOfTask());
+  GetInput() = in;
+  GetOutput() = 0.0;
+}
+
+bool DergynovSIntegralsMultistepRectangleTBB::ValidationImpl() {
+  const auto &[func, borders, n] = GetInput();
+
+  if (!func) {
+    return false;
+  }
+  if (n <= 0) {
+    return false;
+  }
+  if (borders.empty()) {
+    return false;
+  }
+
+  return ValidateBorders(borders);
+}
+
+bool DergynovSIntegralsMultistepRectangleTBB::PreProcessingImpl() {
+  GetOutput() = 0.0;
+  return true;
+}
+
+bool DergynovSIntegralsMultistepRectangleTBB::RunImpl() {
+  const auto &input = GetInput();
+  const auto &func = std::get<0>(input);
+  const auto &borders = std::get<1>(input);
+  const int n = std::get<2>(input);
+  const int dim = static_cast<int>(borders.size());
+
+  std::vector<double> h(dim);
+  double cell_volume = 1.0;
+
+  for (int i = 0; i < dim; ++i) {
+    const double left = borders[i].first;
+    const double right = borders[i].second;
+    h[i] = (right - left) / n;
+    cell_volume *= h[i];
+  }
+
+  size_t total_points = 1;
+  for (int i = 0; i < dim; ++i) {
+    total_points *= n;
+  }
+
+  double total_sum = tbb::parallel_reduce(tbb::blocked_range<size_t>(0, total_points), 0.0,
+                                          [&](const tbb::blocked_range<size_t> &range, double local_sum) {
+    for (size_t linear_idx = range.begin(); linear_idx != range.end(); ++linear_idx) {
+      size_t tmp = linear_idx;
+      std::vector<double> point(dim);
+
+      for (int dimension = dim - 1; dimension >= 0; --dimension) {
+        int idx_val = static_cast<int>(tmp % static_cast<size_t>(n));
+        tmp /= static_cast<size_t>(n);
+        point[dimension] = borders[dimension].first + ((static_cast<double>(idx_val) + 0.5) * h[dimension]);
+      }
+
+      double f_val = func(point);
+      if (!std::isfinite(f_val)) {
+        return local_sum;
+      }
+      local_sum += f_val;
+    }
+    return local_sum;
+  }, [](double a, double b) { return a + b; });
+
+  GetOutput() = total_sum * cell_volume;
+  return std::isfinite(GetOutput());
+}
+
+bool DergynovSIntegralsMultistepRectangleTBB::PostProcessingImpl() {
+  return std::isfinite(GetOutput());
+}
+
+}  // namespace dergynov_s_integrals_multistep_rectangle
diff --git a/tasks/dergynov_s_integrals_multistep_rectangle/tests/functional/main.cpp b/tasks/dergynov_s_integrals_multistep_rectangle/tests/functional/main.cpp
index c6143dc73..8aaadf2f1 100644
--- a/tasks/dergynov_s_integrals_multistep_rectangle/tests/functional/main.cpp
+++ b/tasks/dergynov_s_integrals_multistep_rectangle/tests/functional/main.cpp
@@ -12,6 +12,7 @@
 #include "dergynov_s_integrals_multistep_rectangle/common/include/common.hpp"
 #include "dergynov_s_integrals_multistep_rectangle/omp/include/ops_omp.hpp"
 #include "dergynov_s_integrals_multistep_rectangle/seq/include/ops_seq.hpp"
+#include "dergynov_s_integrals_multistep_rectangle/tbb/include/ops_tbb.hpp"
 #include "util/include/func_test_util.hpp"
 #include "util/include/util.hpp"
 
@@ -207,6 +208,8 @@ const std::array<TestType, 19> kTests = {{
 const auto kTestTasksList = std::tuple_cat(ppc::util::AddFuncTask<DergynovSIntegralsMultistepRectangleSEQ, InType>(
                                                kTests, PPC_SETTINGS_dergynov_s_integrals_multistep_rectangle),
                                            ppc::util::AddFuncTask<DergynovSIntegralsMultistepRectangleOMP, InType>(
+                                               kTests, PPC_SETTINGS_dergynov_s_integrals_multistep_rectangle),
+                                           ppc::util::AddFuncTask<DergynovSIntegralsMultistepRectangleTBB, InType>(
                                                kTests, PPC_SETTINGS_dergynov_s_integrals_multistep_rectangle));
 
 const auto kGtestValues = ppc::util::ExpandToValues(kTestTasksList);
diff --git a/tasks/dergynov_s_integrals_multistep_rectangle/tests/performance/main.cpp b/tasks/dergynov_s_integrals_multistep_rectangle/tests/performance/main.cpp
index 1a610feaa..9832e3631 100644
--- a/tasks/dergynov_s_integrals_multistep_rectangle/tests/performance/main.cpp
+++ b/tasks/dergynov_s_integrals_multistep_rectangle/tests/performance/main.cpp
@@ -8,6 +8,7 @@
 #include "dergynov_s_integrals_multistep_rectangle/common/include/common.hpp"
 #include "dergynov_s_integrals_multistep_rectangle/omp/include/ops_omp.hpp"
 #include "dergynov_s_integrals_multistep_rectangle/seq/include/ops_seq.hpp"
+#include "dergynov_s_integrals_multistep_rectangle/tbb/include/ops_tbb.hpp"
 #include "util/include/perf_test_util.hpp"
 
 namespace dergynov_s_integrals_multistep_rectangle {
@@ -44,9 +45,10 @@ TEST_P(DergynovSIntegralsRectanglePerfTest, RunPerfModes) {
 
 namespace {
 
-const auto kAllPerfTasks = ppc::util::MakeAllPerfTasks<InType, DergynovSIntegralsMultistepRectangleSEQ,
-                                                       DergynovSIntegralsMultistepRectangleOMP>(
-    PPC_SETTINGS_dergynov_s_integrals_multistep_rectangle);
+const auto kAllPerfTasks =
+    ppc::util::MakeAllPerfTasks<InType, DergynovSIntegralsMultistepRectangleSEQ,
+                                DergynovSIntegralsMultistepRectangleOMP, DergynovSIntegralsMultistepRectangleTBB>(
+        PPC_SETTINGS_dergynov_s_integrals_multistep_rectangle);
 
 const auto kGtestValues = ppc::util::TupleToGTestValues(kAllPerfTasks);